SynScan V4 GoTo Hand Controller

SynScan V4 GoTo Hand Controller
instruction Manual
SynScan V4 GoTo Hand Controller
Customer Support:
www.OrionTelescopes.com/contactus
Providing Exceptional Consumer Optical Products Since 1975
Corporate Offices:
89 Hangar Way, Watsonville CA 95076 - USA
Copyright © 2014 Orion Telescopes & Binoculars
All Rights Reserved. No part of this product instruction or any of its contents may be reproduced, copied, modified or adapted,
without the prior written consent of Orion Telescopes & Binoculars.
IN 526 Rev. B 02/15
Table of Contents
5.14 Show Time and Local Sidereal Time . . . . . . . . . . . . . . . . . . . 14
1.Overview and Operating Modes . . . . . . . . . . . . . . . 3
5.16 Display Power Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.1
Keypad Layout and Connection Ports . . . . . . . . . . . . . . . . . . . 3
5.17 Display Polaris Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.2
Slewing with the Direction Keys . . . . . . . . . . . . . . . . . . . . . . . . 4
5.18 Display Polar Alignment Error . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.3
SynScan Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.19 Changing Polar Scope Illumination Level . . . . . . . . . . . . . . . . 15
5.15 Display Version Information . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.Advanced Functions . . . . . . . . . . . . . . . . . . . . . . . 15
2.1
6.1
Setting the Mount’s Home Position . . . . . . . . . . . . . . . . . . . . . 5
2.2 Initializing the Hand Controller . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.
GoTo Star Alignment . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1
Choosing an Alignment Method . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Choosing the Alignment Star(s) . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Alignment Methods for Equatorial Mounts . . . . . . . . . . . . . . . . 7
3.4 Alignment Methods for Alt-azimuth Mounts . . . . . . . . . . . . . . . 8
3.5 Tips for Improving Alignment Accuracy . . . . . . . . . . . . . . . . . . 9
3.6 Comparison of Alignment Methods (Equatorial Mount/Mode) 9
4.Locating Objects . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1
Messier, NGC, IC, and Caldwell Objects . . . . . . . . . . . . . . . . 10
4.2 Planets and the Moon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3 Named Stars, Double Stars, and Variable Stars . . . . . . . . . . 11
4.4 SAO Stars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Identifying Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.2 Synchronizing Encoders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.3 Parking the Telescope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.4 Pointing Accuracy Enhancement (PAE) . . . . . . . . . . . . . . . . . 16
6.5 Camera Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.6 Periodic Error Correction (PEC) for EQ Mount . . . . . . . . . . . 17
6.7
Calibrating Auto-Home Offset . . . . . . . . . . . . . . . . . . . . . . . . 18
6.8 Polar Alignment without Polar Scope . . . . . . . . . . . . . . . . . . . 18
6.9 Setting Cone Error and Non-Perpendicular Error . . . . . . . . . 19
6.10 Astronomical Time-Lapse Photography . . . . . . . . . . . . . . . . . 19
7.
Connecting SynScan to a Computer . . . . . . . . . . 20
7.1
Working with Astronomical Software Programs . . . . . . . . . . . 20
7.2
PC Direct Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.Updating Firmware . . . . . . . . . . . . . . . . . . . . . . . . 20
4.5 Deep Sky Tour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8.1
4.6 User-Defined Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8.2Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.
Configuring Hand Controller and Mount Settings 12
5.1
Date, Time, Site, Time Zone, and Daylight Saving Time . . . . 12
Hardware Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.3 Updating Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.4Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2 Hand Controller Display and Keypad Settings . . . . . . . . . . . . 12
9.Using a SynScan GPS Module . . . . . . . . . . . . . . . . 21
5.3 Backlash Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
9.1
5.4 Tracking Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9.2 Checking GPS Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Initialization of Hand Controller with SynScan GPS Module . 21
5.5 Autoguide Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Appendix A: Standard Time Zones of the World . . . . . 22
5.6 Setting Meridian Flip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Appendix B: SynScan Menu Tree . . . . . . . . . . . . . . . . . 23
5.7 Altitude Axis (Elevation) Slew Limits . . . . . . . . . . . . . . . . . . . 13
Appendix C: Eliminating Cone Error . . . . . . . . . . . . . . . 24
5.8 Enable/Disable Auxiliary Encoder . . . . . . . . . . . . . . . . . . . . . 14
5.9 Alignment Star Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.10 Sorting Method of Alignment Stars . . . . . . . . . . . . . . . . . . . . . 14
Appendix D: SynScan Self‑Diagnosis . . . . . . . . . . . . . . 26
Appendix E: Schematic of the Ports . . . . . . . . . . . . . . 26
5.11 Naming of Stars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Appendix F: Specifications . . . . . . . . . . . . . . . . . . . . . . 27
5.12 Re-aligning the Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Appendix G: Star Charts . . . . . . . . . . . . . . . . . . . . . . . . 28
5.13 Show Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Warning:
2
• Never look directly at the Sun with the naked
eye or with a telescope – unless you have a
proper solar filter installed over the front of the
telescope! Otherwise, permanent, irreversible
eye damage may result.
• Never use an eyepiece solar filter or a Herschel
wedge. Internal heat build-up inside the
telescope can cause these devices to crack
or break, allowing unfiltered sunlight to pass
through to the eye.
• Never use your telescope to project an image of
the Sun onto any surface. Internal heat build-up
can damage the telescope and any accessories
attached to it.
• Never leave the telescope unsupervised, either
when children are present or adults who may
not be familiar with the correct operating
procedures of your telescope.
1. Overview and
Operating Modes
The SynScan V4 GoTo hand controller provides easy, computerized location of thousands of night sky objects – planets,
nebulas, star clusters, galaxies, and more for viewing through
your telescope. The SynScan hand controller, combined with
the optical encoders and electronic drive motors of your GoTo
mount, allow you to automatically point your telescope to a
specific object, or tour the skies with push-button simplicity. The user-friendly menus allow automatic slewing to over
42,000 objects and stars. Even inexperienced astronomers will
quickly master SynScan’s intuitive features and functionality.
Display
screen
Mode keys
Direction
keys
1.1Keypad Layout and Connection Ports
The hand controller’s two-line liquid crystal display (LCD) is
backlit for comfortable viewing. The contrast of the text and the
brightness of the red backlight are both adjustable.
Dual purpose
(shortcut)
keys
There are four categories of control keys on the hand controller (Figure 1a):
1. Mode keys
2. Direction keys
3. Scroll keys
Scroll keys
4. Dual Purpose keys
Mode Keys
The three mode keys are ESC, MENU, and ENTER.
• ESC is used to escape from a certain command or go back
a level in the menu tree.
• MENU is a quick hot key that takes you to the SETUP
menu.
a.
• ENTER is used to select the functions and submenus in the
menu tree, and to confirm certain functional operations.
Direction Keys
The direction keys (Up, Down, Left, Right) allow the user to
have complete control of the mount at almost any step in
operation. These controls are locked out when the telescope is
slewing to an object. The direction keys are very helpful when
initially aligning the mount, centering objects in the eyepiece
field of view, slewing, and manually guiding. The left and right
direction keys can also be used to move the text cursor when
entering data on the hand controller.
b.
Serial
cable port
(RJ-12)
Hand controller
cable port
(RJ-45)
Scroll Keys
The Up and Down scroll keys allow you to scroll up and down
within the menu tree or selections displayed on the hand controller screen.
Figure 1. a) The SynScan GoTo hand controller, b) Hand
controller cable and serial cable ports on the bottom end of
the controller
Dual Purpose (Shortcut) Keys
The dual purpose keys serve two distinct purposes. They are
used for data entry and as quick-reference (shortcut) keys.
• RATE: Changes the slew speed controlled by the
directional keys. There are 10 slew speeds to choose from,
with 0 being the slowest and 9 being the fastest.
• TOUR: Access the “Deep Sky Tour” function. Takes you on
a preset tour of the best night sky objects visible
• UTILITY: Access to the UTILITY FUNCTION menu.
Displays functions such as “Show Position”, “Show
Information,” etc.
3
• USER: Access to the OBJECT LIST submenu. Gives
access to up to 25 user-defined coordinates
·· If there is no keypad operation in 5 seconds, the most
recent speed will be kept and the LCD display will return
to its previous content.
• ID: Access to the “Identify” function. Identifies the object the
mount is currently pointing to.
The following table lists the available slewing speeds:
• M: Access to the “Messier Catalog” submenu of 109
Messier objects.
Rate No.
Speed *1
0
0.5X*2
1
1X*3
2
8X
3
16X
4
32X
• NGC: Access to the “NGC Catalog” submenu.
Rate No.
Speed *1
5
64X
6
128X
7
400X
8
600X
9
Max*4
• IC: Access to the “IC Catalog” submenu.
• PLANET: Access to “SOLAR SYSTEM” objects.
• OBJECT: Access to the “OBJECT LIST” menu.
To connect the SynScan V4 hand controller to your mount,
plug the 8-pin RJ-45 connector of the coil cable that came with
your SynScan into the corresponding port on the bottom of
the hand controller (Figure 1b), and plug the other end of the
cable into the port on the mount’s drive panel. The table below
lists the “Hand Control” ports on different Orion GoTo mounts.
Mount Model
Atlas EQ-G
SkyView Pro GoTo, Sirius
EQ-G, Atlas Pro AZ/EQ-G,
HDX110 EQ-G
SkyQuest GoTo Dobsonians,
all other Orion alt-azimuth
mounts
Hand Controller
Port
8-pin RJ-45
“Hand Control”
Port on Mount
DB-9 (F)
8-pin RJ-45
6-pin RJ-12
Plug the coil cable’s RJ-45 connector into the mount. The smaller modular jack on the bottom of the hand controller is used
for serial (RS-232) communications between the SynScan
and a computer equipped with astronomy software such as
Starry Night Pro (see Section 7: Connecting SynScan to a
Computer). A serial cable was included with your Orion GoTo
mount or telescope.
1.2Slewing with the Direction Keys
The four large direction keys (Figure 1a) allow the mount to be
slewed electronically as follows:
• The Left and Right keys control the movements of the Right
Ascension (R.A.) axis (for an equatorial mount or mode) or
the azimuth axis (for an Alt-azimuth mount or mode).
• The Up and Down keys control the movements of the
Declination (Dec.) axis (for an equatorial mount or mode) or
altitude axis (for an Alt-azimuth mount or mode).
• Pressing the “RATE” key will enable the slewing speed to
be selected or changed:
·· The LCD screen will display “Set Speed,” followed by the
current speed as “Rate = *X”’.
·· Press a number between “0” and “9” to select a new
speed.
·· Press the ENTER key to return to the previous display.
·· If you do not press the ENTER button, you can continue
to change the speed while using the direction keys to
slew the mount.
4
• Rates 7, 8, and 9 are used for fast slewing of the mount.
• Rates 5 and 6 are primarily used to move a target within
the field of view of a finder scope.
• Rates 2, 3, and 4 are slower rates useful for moving a
target in the field of view of an eyepiece.
• Rates 0 and 1 are the slowest rates, ideal for centering an
object in a high-power eyepiece, or for manual guiding.
Note:
*1: Speed is represented as multiples of the sidereal rate
(Earth’s rotation speed)
*2, *3: For Equatorial mounts, the speed is the drift speed of
an object in the FOV with tracking turned on; it is not the axis’s
rotation speed.
*4: Maximum speed varies on different mounts. For most Orion
mounts, it is higher than 800X (3.4 degrees/sec).
1.3SynScan Operating Modes
The SynScan V4 hand controller has two operating modes to
choose from: Full Feature Mode and Easy Tracking Mode.
1. Full Feature Mode
Full Feature mode is the most commonly employed mode of
operation. In this mode the hand controller must be connected
to an Orion GoTo telescope mount. After turning on the power
to the mount, an “Initialization” routine for the hand controller
must be performed, followed by a GoTo “Alignment” routine,
which precisely orients the mount with the coordinate grid of
the sky. Only after the “Alignment” is done can the SynScan
hand controller’s GoTo function be used to accurately pinpoint
celestial objects.
A flowchart of the “Full Feature” operation is shown here:
Initialization
Alignment
Locate a celestial
object automatically
Observing or
other operations
2. Easy Tracking Mode
The Easy Tracking mode is suitable for quick setup for visual
observing of brighter celestial objects, such as planets, the
Moon, or the Sun. If the user does not turn on the tracking
function, the Easy Tracking mode can also be used for observing terrestrial objects.
In Easy Tracking mode, the hand controller must be connected
to an Orion GoTo telescope mount. The mount must be set in a
proper “Home Position” (refer to Section 2.1 for details) before
turning on the power. After turning on the power to the mount,
you’ll complete an “Initialization” routine on the hand controller.
Then you can choose to skip the “Alignment” routine and start
the tracking function directly (refer to Section 5.4 for selecting
the tracking rate). Users will need to locate a celestial object in
the sky, and then use the hand controller to manually point the
telescope to the target. The object locating function may still
be used but it will not yield a highly accurate result.
A flow chart of the “Easy Tracking” operation is shown here:
Initialization
Start
Tracking
Locate a celestial
object automatically
Observing or
other operations
2. Initialization
2.1Setting the Mount’s Home Position
Before powering on the telescope mount, it should be set to
the “home position.” The home position is different for equatorial and alt-azimuth mounts.
1. Home Position of an Equatorial Mount
• Level the tripod head.
• Point the R.A. axis toward the North Celestial Pole (in
Northern Hemisphere) or the South Celestial Pole (in
Southern Hemisphere).
• Orient the counterweight shaft so it points downward.
• Point the telescope in the general direction of the North
Celestial Pole (in Northern Hemisphere) or the South
Celestial Pole (in Southern Hemisphere).
2. Home Position of an Alt-azimuth Mount
To operate the SynScan hand controller in “Full Feature”
mode, no particular home position is required.
To operate the SynScan in “Easy Tracking” mode, the mount should
be set up as close as possible to the following home position:
• Level the mount base.
• Level the telescope’s tube (parallel to ground) and point it
toward true North (not magnetic North).
2.2Initializing the Hand Controller
Once the mount has been set to the home position, turn the
mount’s power switch to ON and start the initialization process
via the SynScan hand controller.
1. Selecting the Operating Mode of the Mount
A SynScan V4 hand controller with firmware version 4.05.06
or later supports both an equatorial mount and an alt-azimuth
mount. It automatically detects the model of the mount to
which it connects and selects the appropriate operation mode
accordingly.
For an Equatorial/Alt-azimuth dual-mode mount, such as the
Orion Atlas Pro AZ/EQ-G, the SynScan hand controller will
request that the user select the operating mode you wish to
use:
• The LCD screen will display “Operating Mode” in the first
line.
• Use the scrolling keys at the bottom left and right of the
keypad to choose Equatorial mode (EQ Mode) or Altazimuth mode (AZ Mode).
• Press ENTER to confirm the selection.
2. Firmware Version Display
The hand controller will display the firmware version.
• Press ENTER to proceed to the next step. Press ESC to
return to the previous step.
• You can slew the mount with the direction keys at this step.
3. Solar Warning Message
The hand controller will scroll a warning message about the
dangers of viewing the Sun with a telescope without a properly
fitted solar filter.
• Press ENTER to confirm you have read the warning
messages and proceed to the next step. Press ESC to
return to the previous (firmware version display) step.
• You can slew the mount with the direction keys at this step.
4. Auto-homing (HDX110 EQ-G Mount only)
The “Auto-Homing” feature automatically establishes a home
position for the telescope. This capability applies only to
mounts equipped with the Auto-homing feature, such as the
Orion HDX110 EQ-G mount. Here’s the procedure:
• The LCD screen will display “Auto-Home?” in the first line,
and display “1) YES 2) NO” in the second line.
• Press “2” to skip this step and proceed to the next step,
or …
• Press “1” to start the auto-homing routine on the mount.
Once completed, the screen will display “Home Position
Established.” Press ENTER to proceed to the next step.
• During the auto-homing routine, pressing the ESC key will
stop the mount’s movement. The screen will display “Home
Position NOT Established.” Press ENTER to proceed to the
next step.
• After the home position is established, the LCD screen will
display “Add DEC offset?” in the first line, and display “1)
YES 2)NO” in the second line.
• Press “2” to skip this step and proceed to the next step.
• Press “1” and then use the numeric keys and the LEFT/
RIGHT directional keys to enter offset (in degrees) of the
declination axis and then press the ENTER key to confirm.
The decli¬nation axis will start slewing to the designated
offset position. This function is designed for a side-by-side
dual telescope setup.
5. Entering Data About the Observing Site, Time, and Date
Geographic Coordinates
The LCD screen will display “Set Longitude:” on the first line
and the longitude values on the second line.
• Enter the telescope’s current longitudinal location using
the numeric keypad and scroll buttons. If you do not know
the longitude coordinate of your viewing location, consult
an atlas or look them up on the internet (i.e., search “[your
location] coordinates”).
• Use the scroll keys to toggle between E and W.
5
• Press ENTER to confirm the entered coordinates and
proceed to the next step.
• Press the ENTER key to confirm the input and proceed to
the next step.
The LCD screen will then display “Set Latitude:” on the first
line and the latitude values on the second line.
• Press the ESC key to return to the previous step.
• Enter the telescope’s current latitudinal location using the
numeric keypad and scroll buttons. If you do not know the
latitude coordinate of your viewing location, consult an atlas
or look them up on the internet (i.e., search “[your location]
coordinates”).
• Use the scroll keys to toggle between N and S.
• Press ENTER to confirm the entered coordinates and
proceed to the next step.
Note: Latitude and longitude coordinates must be entered
in degrees and arcminutes. If your atlas or other reference
source provides coordinates in decimal values (i.e., latitude
= 36.95 N), you must convert that into degrees (°) and arcminutes (‘), i.e., latitude 36.95 N = latitude 36°57’ N. There are
60 arcminutes in 1 degree.
Time Zone
The LCD screen will display “Set Time Zone” on the first line
and the current time zone on the second line.
• Enter the time zone in which you are observing in hours
(see Appendix A), using the scroll keys and numeric
keypad. Use the scroll keys to change the “+” or “-”
sign. The “+” sign is used for time zones in the Eastern
Hemisphere (Europe, Africa, Asia, Oceania), while the “-”
sign is used for time zones in the Western Hemisphere
(North and South America). So for California the time zone
would be entered as -08:00.
• Press ENTER to confirm your choice and proceed to the
next step.
Date, Time, Daylight Saving Time
• Enter the date in the format mm/dd/yyyy using the numeric
keypad. Press ENTER to confirm your choice.
• Enter your current local time using the 24 hour time mode
(e.g., 2:00 p.m. = 14:00). Press ENTER to view the time
you entered. If the time is incorrect, press ESC to go back
to the previous screen. If the time is correct, press ENTER
again to proceed to the next step.
• When “Daylight Saving?” is displayed, use the scroll keys to
select “Yes” or “No”. “YES” indicates the time entered in the
previous step is Daylight Saving time, while “NO” indicates
the time entered is Standard time.
• Press the ENTER key to confirm and proceed to the next
step.
Elevation (for atmospheric refraction compensation)
• The LCD screen will display “Set Elevation:” in the first line,
and the elevation in meters in the second line.
• Use the scroll keys to change the leading “+” or “-” sign
when the cursor is on it.
• Press the numeric keys at the cursor position to fill in the
elevation in meters.
6
6. Display Position of Polaris Relative to NCP
This step applies to an equatorial mount (or mode) only. It
specifies the orientation of the north star, Polaris, relative to
the north celestial pole (NCP) in the polar scope’s field of view.
• The LCD screen will display “Polaris Position in P.Scope =
HH:MM”. When using a polar scope to do the polar
alignment, user can imagine the large circle in the FOV of
a polar-scope as a clock’s face with 12:00 at the top, and
put the Polaris at the “HH:MM” position of the large circle.
Press ENTER to confirm and proceed to the next step.
Press ESC to return to the previous step.
• The LCD screen will display “Hour Angle of Polaris =
HH:MM”. Press ENTER to confirm and proceed to the next
step. Press ESC to return to the previous step.
7. Starting GoTo Alignment
For this, the last step in the hand controller’s initialization process, the screen will display “Begin Alignment?” and ask you
to select 1) YES or 2) NO.
Press “1” to start the alignment process.
The SynScan hand controller will operate in Full Feature mode
(refer to Section 1.4) after the alignment.
Press “2” to skip the alignment process.
The SynScan hand controller will enter standby mode.
• You can start the tracking functions (refer to Section 5.4),
or use the GoTo function (see Section 4) to roughly locate
celestial objects. For either operation the SynScan hand
controller will employ the Easy Tracking mode (refer to
Section 1.3 Step 2).
• You can also start an alignment process to operate the
SynScan hand controller in Full Feature mode.
• You may slew the mount with the direction keys to point
the telescope to terrestrial targets for observing. The
“User-Defined Objects” function (refer to Section 4.6) of
the SynScan hand controller is a useful tool for terrestrial
observing.
3. GoTo Star Alignment
In order for your GoTo telescope to accurately locate and point
to objects in the sky, it must first be aligned on known positions
(stars) in the sky. With the supplied information, the mount can
replicate a model of the sky and the movements of astronomical objects. We’re not talking about polar alignment here; that
should be done prior to the GoTo alignment procedure (consult the manual for your specific mount or telescope.)
Note: For best results, consider using an illuminated reticle
(crosshair) eyepiece to aid in the precise centering of stars in
the telescope’s field of view (FOV) during the alignment process. And before performing any of the alignment methods, be
sure that your finder scope is precisely aligned with the telescope tube.
3.1Choosing an Alignment Method
At the beginning of the alignment process, you will use the
scroll keys to choose an alignment method. The available
alignment methods differ between the mount types:
• For an equatorial mount, the choices are 1-Star Alignment
(1-Star Align.), 2-Star Alignment (2-Star Align.) or 3-Star
Alignment (3-Star Align.).
• For an alt-azimuth mount, the choices are Brightest Star
Alignment (Brightest Star) or 2-Star Alignment (2-Star
Align.).
• Select one and press ENTER to proceed to the next step.
Note: For a detailed description and comparison of each alignment method, please refer to Section 3.6.
3.2Choosing the Alignment Star(s)
In this step, you will be asked to choose one or multiple alignment stars from a list provided by the SynScan hand controller,
and then control the mount to center the star(s) in the field of
view of the telescope’s eyepiece. The SynScan hand controller
will then use the data collected in this process to calculate the
mount’s orientation relative to the sky coordinates.
The steps for aligning on alignment stars may differ depending
on the type of mount used, as well as the chosen alignment
method. Please refer to the relevant section for your mount:
• 3.3 Alignment Methods for Equatorial Mounts
• 3.4 Alignment Methods for Alt-azimuth Mounts
3.3Alignment Methods for Equatorial Mounts
If you are using the GoTo controller for the first time, we recommend you begin with the 3-star alignment. In most cases, a
3-star alignment produces the most accurate alignment of the
three possible methods. A 1-star alignment is the least accurate but may be sufficient for casual observing.
3-Star Alignment
1. At the prompt of “Choose 1st Star,” use the scroll keys
to browse through a list of star names and choose
one you’re familiar with. Press ENTER. The mount will
then automatically slew the telescope toward that star.
2. After the mount stops, the hand controller will display
“Use arrow buttons Ctr. To eyepiece.” The mount’s
tracking function is also automatically turned on to
prevent the target star from drifting in the FOV of the
telescope.
3. Now use the direction keys to move the telescope to
center the star in the FOV of the finder scope.
4. Then look in the eyepiece and move the telescope
(using the directional keys) so that the chosen star is
centered in the field of view of the telescope eyepiece.
5. Press ENTER to confirm the star is centered.
Note: Generally, a slew rate of 5 or 6 is best for centering the
star in the finder scope, and a rate of 2 or 3 works best for
centering the star in the telescope’s eyepiece. The slewing
speed can be adjusted by pressing the RATE/2 key. Choose a
desired rate between 0 (slowest) and 9 (fastest).
6. You will then be prompted to choose a 2nd alignment
star. Choose a star using the scroll buttons and press
ENTER to confirm your choice. Repeat the centering
procedure for the second alignment star using the
direction buttons and press ENTER to confirm
alignment.
7. The controller will provide a list of stars that can be
used as the third alignment star. Choose a star using
the scroll buttons and press ENTER to confirm your
choice. Once again, repeat the centering procedure
for the third alignment star and press ENTER to
confirm alignment.
8. Once the three alignment stars have been entered
and alignment is completed, the hand controller will
display “Alignment Successful.” Press ENTER to
access the Main Menu.
9. If “Alignment Failed” is displayed, the alignment
procedure must be performed again. To do this, turn
the mount’s power switch off, then on again.
2-Star Alignment
Two-star alignment requires only two alignment stars but may
produce lesser pointing accuracy than the three-star alignment.
1. From the alignment prompt, select “2-Star Align”
using the scroll buttons. Press ENTER to confirm your
choice.
2. The hand controller will provide a list of stars available
in your current sky for you to choose as the first
alignment star. Use the same procedure as described
for the 3-star alignment to center the first and second
star in the finder scope, then in the telescope’s
eyepiece. Once the two alignment stars have
been entered and alignment is complete, the hand
controller will display “Alignment Successful.”
3. If “Alignment Failed” is displayed, the alignment
procedure must be performed again. To do this, turn
the mount’s power switch off, then on again.
1-Star Alignment
One-star alignment is the simplest and quickest alignment
method, as only one alignment star is required. Due to minimal
data input, however, a one-star alignment will not yield optimal
results unless polar alignment is very accurate, and any cone
error is minimized (see Appendix C).
1. Access the alignment screen and select “1-Star Align”
using the scroll buttons. Press ENTER to confirm your
choice.
2. The hand controller will provide a list of stars available
in your current sky for you to choose as the alignment
star. Use the same procedure as described for the
3-star alignment to center the first (and only) star in
the finder scope, then in the telescope’s eyepiece.
Once the alignment star has been entered and
7
alignment is complete, the hand controller will display
“Alignment Successful.”
N (0˚)
8
W
TH
NOR
KY
T S
STERN SK Y
WE
ES
UTHE R N S K Y
2. The hand controller will prompt you to “Select
Region.” Referring to Figure 2, choose the region
that corresponds with where you see the brightest
star in the sky. It may be helpful to have a compass
for reference during this process. There are eight
overlapping regions to choose from, each covers a
90-degree span in azimuth. The direction you choose
will only affect your alignment star selection; you will
SO
1. Select “Brightest Star” as your Alignment Method.
Press ENTER.
HW
Brightest Star Alignment
Aligning the 1st Star
S OUT
Note: Before performing either of the alignment methods, be
sure that the finder scope or reflex sight is precisely aligned
with the telescope tube.
KY
T S
• The two alignment stars should be separated by 45-135
degrees in azimuth, preferably around 90 degrees.
E
STERN SK Y
• It is recommended that the two alignment stars be 15-60
degrees above the horizon and their altitudes differ by
10-30 degrees.
TH
EA
Rules for choosing alignment stars:
(225˚)
NOR
HE
For the novice stargazer unfamiliar with the night sky or the
names of brighter stars, some might find the Brightest Star
Alignment to be the easier of the two methods. The 2-Star
method is for users who know the names of at least some
stars in the night sky. To assist you in performing the alignment by either method, we have included in Appendix G a
set of star charts with the names of some bright stars indicated for easy reference.
KY
T S
(45˚)
S OUT
3.4Alignment Methods for Alt-azimuth Mounts
There are two methods for aligning in Alt-azimuth mode, and
they are very similar: Brightest Star Alignment and 2-Star
Alignment. Both actually involve identifying and pointing the
telescope to two different bright stars in the night sky. Both
alignment methods provide the same level of precision. The
only difference is that for the Brightest Star alignment, the hand
controller will prompt you to select the first alignment star from
a directional region of the sky and will provide a short list of the
brightest stars in that region. With the 2-Star alignment procedure the list of eligible stars is not grouped by region of sky.
ES
RTHE R N SK Y
KY
T S
2. Press any key and the SynScan hand controller will
display “Exit Alignment? 1) YES 2) NO.” Press key 1 to
exit the alignment process; press key 2 to go back to
choose an alignment star.
W (270˚)
NO
AS
Cancellation During Alignment Process
1. While the mount is slewing during the alignment, you
may press the ESC key to stop the mount. The hand
controller screen will display “Mount stopped.
Press any key…”
(315˚)
AS
3. If “Alignment Failed” is displayed, the alignment
procedure must be performed again. To do this, turn
the mount’s power switch off, then on again.
E (90˚)
(135˚)
S (180˚)
Figure 2. Directional regions of the sky used in the
“Brightest Star” alignment method.
Star Name
Brightness Order
Orientation
1. Capella
NE 35.3
15.7
Altitude Angle
Azimuth Angle
Figure 3. Alignment star information displayed on LCD.
still be able to choose objects to view across the
entire sky once the alignment is complete.
3. After you have selected the region of the sky
containing the brightest star, the hand controller will
generate a list of the brightest stars in that region
sorted by the brightness of the star, with the brightest
stars at the top of the list. Only stars brighter than
magnitude 1.5 will appear in the list. If there is no star
brighter than magnitude 1.5 in the selected region,
the hand controller will display “No object found in
this region.” Press ENTER or ESC and select another
region of sky.
4. Now, use the Scroll keys to scroll through the list of
bright stars. There will only be a few stars, at most,
on the list, and sometimes only one star will be on
the list. The hand controller will display the name
of the star on the first line, and the approximate
position of the star (based on the time and date
entered during the initial setup) on the second line
(Figure 3). The first coordinate on the second line is
an E-W coordinate (azimuth angle), and the second
coordinate indicates degrees above the horizon.
These coordinates provide a simple way to identify the
bright star you have chosen. When you are confident
the hand controller is displaying the name of the bright
star you wish to align on, press ENTER.
5. The mount will NOT slew to the selected bright star
automatically. Instead, the screen will display “Point
scope to RR ZZ.Z° TT.T° ,” where RR is the region
(e.g., NE, SW, etc.) ZZ.Z is the azimuth angle in
degrees, and TT.T is the altitude in degrees. Use
the direction keys to move the mount and point the
telescope to the 1st alignment star selected in the
previous step. Center the 1st alignment star in the
FOV of the finder scope or the red dot finder, and then
press ENTER to proceed to the next step.
If the mount has clutches on its axes, you can loosen the
clutches to move the mount manually to point the telescope
to the target.
Note: Generally, a slewing rate of 5 or 6 is best for centering
the star in the finder scope, and a rate of 2 or 3 works best
for centering the star in the telescope’s eyepiece. The slewing
speed can be adjusted by pressing the RATE/2 key. Choose a
desired rate between 0 (slowest) and 9 (fastest).
6. Now the screen will display “Ctr. to eyepiece” and
the name of the selected 1st alignment star. Use the
direction keys to center it in the telescope’s eyepiece
and then press ENTER.
Aligning the 2nd Star
7. If the first alignment star is not a planet, the LCD
screen will display “Choose 2nd Star”; otherwise, it will
display “Choose 1st Star.”
8. Scroll through the list using the Scroll keys and
refer to the appropriate star chart in the back of this
manual to choose a second alignment star. Ideally,
you want this star to be about 60 degrees (i.e., about
six fist-widths held at arm’s length) away from the first
alignment star in azimuth, and preferably at roughly
the same altitude. The more distance between the two
alignment stars, the better accuracy the alignment will
produce. Once you’ve selected a second alignment
star, press ENTER. The mount will now automatically
slew to the selected star, which should land in or near
the field of view of your finder scope.
9. After the mount stops, the hand controller will display
the name of the selected star on line 1 and “Ctr. to
eyepiece” on line 2. After you’ve centered it in the
telescope’s eyepiece (or first in the finder scope, if the
star is not visible in the eyepiece field of view), press
ENTER.
• If the first alignment star was not a planet, the SynScan
hand controller will now display “Alignment Successful.”
Press ENTER to skip extra messages and complete the
alignment process.
• If the first alignment star was a planet, the SynScan hand
controller will display “Choose 2nd Star.” Repeat from Step
2 to complete the alignment process.
• If the message “Alignment Failed” displays, it usually
means the star positions do not correspond with the
location and date/time information input during setup.
Please check your user initialization settings before starting
again.
Cancellation During Alignment Process
1. While the mount is slewing during the alignment, you
may press the ESC key to stop the mount. The hand
controller screen will display “MOUNT STOPPED!!
Press any key.”
2. Press any key and the SynScan hand controller will
display “Exit Alignment? 1) YES 2) NO.” Press key 1
to exit the alignment process; press key 2 to start the
alignment process over.
2-Star Alignment
To perform the 2-star alignment, follow the same steps
described for the Brightest Star alignment, except that the
hand controller will not prompt you to select a directional
region for a bright star. Instead, you’ll be presented with a list
of stars available in your current sky to choose from, for each
of the two alignment stars.
3.5Tips for Improving Alignment Accuracy
Eyepiece
• Use a reticle eyepiece to ensure accurate centering of your
alignment objects. If a reticle eyepiece is not available,
try to use an eyepiece with longer focal length to yield a
smaller FOV. You can also try de-focusing the star image to
obtain a large star disk in the FOV. Centering the star disk
in the FOV is easier than centering a pinpoint star, in the
absence of a reticle eyepiece.
• During the alignment process, avoid changing or rotating
the eyepiece and the diagonal (if one is used).
Mechanical Backlash
All mounts have some amount of mechanical backlash on both
axes. To avoid introducing alignment error from backlash, keep
the following rules in mind:
• When centering an alignment star in the eyepiece, the
operation should always end by using the UP and RIGHT
direction keys to move the axes.
• If there is overshoot when centering an alignment star in the
eyepiece with UP and RIGHT keys, use the LEFT or DOWN
keys to pull the star back to the edge of the FOV and then
use the RIGHT and UP keys to center the star again.
Alignment Star Selection
The choice of alignment stars can also impact the alignment
accuracy. Please refer to earlier parts of Section 3 on suggestions for choosing alignment stars for various mounts and
alignment methods.
3.6Comparison of Alignment Methods
(Equatorial Mount/Mode)
1-Star Alignment
Advantage: Quickest alignment.
Preconditions:
• An accurate polar alignment for the mount.
• Small cone error in the telescope-mount setup.
9
• If the cone error is large, there will be noticeable offset
in the R.A. when the SynScan hand controller locates an
object that is:
·· On the other side of the meridian from the alignment star.
·· Deviated significantly in declination from the alignment
star.
Rules for choosing an alignment star:
• Choose an alignment star with smaller declination. It will
help to obtain higher resolution in R.A. movement in the
telescope’s eyepiece.
• If there is cone error in the telescope-mount setup or if you
are unsure about it, choose an alignment star that is close
to the object(s) to be observed.
2-Star Alignment
Advantage: For visual observing, the mount does not need to
be polar-aligned accurately.
Preconditions: Small cone error in the telescope-mount setup.
Rules for choosing alignment stars:
• The deviation in R.A. of the two alignment stars should not
be too small or too close to 12 hours, i.e., 180 degrees;
the recommended deviation is between 3 and 9 hours, i.e.,
between 45 and 135 degrees.
choose the “3-star alignment” to align the mount. Use “1-star
alignment” or “2-star alignment” instead.
4. Locating Objects
Users can access several popular celestial object catalogs
stored in the SynScan hand controller and command the telescope mount to locate a specific object in the catalogs. The
object location function is available for either “Full Feature”
mode (Section 1.3 Step 1) or “Easy Tracking” mode (Section
1.3 Step 2) of the mount.
The SynScan hand controller boasts a vast database of over
42,000 objects and stars. Once the telescope has been GoTo
aligned, you can access and view the thousands of objects in
the SynScan database. The database contains the following
catalogs:
Named Star: A list of 100 popular, known stars
Solar System: The other 8 planets of our solar system and
Earth’s Moon
NGC: 7,840 of the brightest deep-sky objects from the Revised
New General Catalog
IC: 5,386 of standard stars and deep sky objects from the
Indexed Catalog
• If there is cone error in the telescope-mount setup or if you
are unsure about it, choose two alignment stars that are on
the same side of the meridian. The absolute values of the
two alignment stars’ declination should be between 10 to
30 degrees.
Messier: Complete list of 110 Messier objects
Note: If the polar alignment of the mount is good, it is not necessary to choose “2-Star alignment” to align the mount; use
“1-star alignment” instead.
Double Star: Includes 55 of the best double stars to view
3-Star Alignment
Advantages:
User Object: Up to 25 objects can be saved in the UserDefined database
• Good pointing accuracy; even if the telescope-mount
system has cone error.
• For visual observing, the mount does not need to be
accurately polar-aligned.
Preconditions: The skies on both sides of the meridian are
clear of obstructions.
Rules for choosing alignment stars:
• The three alignment stars should be spread out on both
sides of the meridian.
• For the two alignment stars on the same side of the
meridian, they should differ in R.A. by greater than 3 hours,
i.e., 45 degrees apart in RA, and the absolute value of the
difference of the two alignment stars’ declination should be
between 10 and 30 degrees ( 10° < |Dec1 – Dec2| < 30°).
• If there is cone error in the telescope-mount setup or you
are unsure about it, don’t choose alignment stars that all
have small declinations (close to Dec. = 0).
Note: If you are sure that there is no (or very small) cone error
in the telescope-mount system, then it is not necessary to
10
Caldwell: Complete list of 109 Caldwell objects
SAO Catalog: The SAO star catalog in the SynScan hand
controller is a small sub-set of the 259,000-star SAO catalog,
containing only stars brighter than magnitude 8
Variable Star: Includes 20 of the most famous variable stars
Deep-Sky Tour: Takes you on a preset tour across the night
sky, stopping at the brightest and most beautiful objects visible
in your sky at the current time/date
4.1Messier, NGC, IC, and Caldwell Objects
1. Press the M, NGC, or IC shortcut key on the hand
controller, or press the OBJECT key. For Caldwell
objects, there is no shortcut key so press the OBJECT
key and scroll until “Caldwell Catalog” is displayed,
then press ENTER.
2. Enter the 3-digit (for Messier or Caldwell) or 4-digit
catalog number of the object you wish to target.
• Messier objects are numbered from 1 through 110.
• NGC objects are numbered from 1 through 7840.
• IC objects are numbered from 1 through 5386.
• Caldwell objects are numbered from 1 through 109.
3. If the selected object is below the horizon at this
time, the SynScan hand controller will display “Below
horizon” for 2 seconds; otherwise, it will display the
object’s current azimuth and altitude.
4. By using the scroll keys, you can browse the following
information of the object: J2000 celestial coordinates,
magnitude (MAG=), rising time (Rise:), transit
time (Transit:), setting time (Set:), size (Size=) and
associated constellation (Constellation:).
5. Press the ENTER key to proceed to the next step. The
screen will display “View Object?”
6. Press the ENTER key to slew the mount toward the
target (or press the ESC key to return to the previous
step). When the mount stops, the SynScan hand
controller will beep and then return to the previous
step. The mount will also automatically start tracking
the object.
7. You can press the ESC key to stop the mount if
needed. The screen will display “MOUNT STOPPED!!
Press any key.” Then press any key to return to the
previous step.
Note: The mount will not slew if:
• The object is below the horizon.
• On an alt-azimuth mount, the object’s altitude exceeds the
limit set by the hand controller. (The screen will display
“Target over slew limit” in this case.) See Section 5.6 for
more on altitude slew limits.
4.2 Planets and the Moon
1. Press the “PLANET” shortcut key. The screen will
display “Solar System” in the top row.
2. Use the scroll keys to browse through the list of
entries, which includes Mercury, Venus, Mars, Jupiter,
Saturn, Uranus, Neptune, Pluto (Yes, we know, it’s no
longer officially a planet!), and the Moon. Choose one
and press ENTER.
3. To slew to an object you will use the same basic
procedure as for the other objects above (see Section
4.1).
Note: The data for the separation angle (Separation:) and the
position angle (Position Angle:) are provided for double stars,
and the maximum magnitude (Max.MAG=), minimum magnitude (Min.MAG=), and period of variation (Period=) are provided for variable stars.
4.4SAO Stars
1. Press the “OBJECT” shortcut key and use the two
scroll keys to find “SAO Catalog,” then press ENTER.
2. Enter the 4 left-most digits of the 6-digit SAO
number (e.g., “SAO 0238xx”). Press ENTER, then
the hand controller will find the first SAO number in
the database that matches the four left-most digits
entered (e.g., “SAO 023801”).
3. Use the scroll keys to change the last two digits until
the screen displays the desired SAO index number.
Press the ENTER key to confirm the input. (e.g., “SAO
023825”).
Note: The SAO catalog in the SynScan hand controller is a
sub-set of the SAO catalog. It only contains stars brighter than
magnitude 8.
4. To slew to a star you will use the same procedure as
for the other objects above (see Section 4.1).
4.5Deep Sky Tour
The SynScan V4 hand controller enables you to take a tour of
the best deep-sky objects visible in the current sky from your
location. You can select them one by one and command the
SynScan hand controller to automatically point the telescope
to each object for viewing. This is the “Deep Sky Tour” function.
3. If the selected object is currently below the horizon,
the message “Below horizon” will display for 2
seconds; otherwise, you will see the object’s current
azimuth and altitude.
1. Press the “TOUR” shortcut key. The screen will display
“Deep Sky Tour” in the top row. Use the two scroll keys
to browse through a list of the deep-sky objects and
press ENTER to pick one.
4. Using the scroll keys, you can browse the following
information of the object: current RA and Dec
coordinates, rise time (Rise:), transit time (Transit:),
set time (Set:), and the common name of the object.
Press ENTER to proceed to the next step.
2. The screen will display the catalog to which the object
belongs as well as its catalog number in the top row.
The object’s current azimuth and altitude will be
displayed in the bottom row.
5. To slew to the object, follow the same process
described for the Messier, NGC, IC, and Caldwell
Objects in Section 4.1 above.
4.3Named Stars, Double Stars, and
Variable Stars
1. Press the “OBJECT” shortcut key. Use the two scroll
keys to browse the list until “Named Star,” “Double
Stars,” or “Variable Stars” is displayed, and then press
the ENTER key to select the desired option.
2. Once inside, use the two scroll keys to find the
desired object in the list of star names. Press the
ENTER key to confirm the selection.
3. Use the scroll keys to browse the object’s current
celestial coordinates, magnitude (MAG=), rise time
(Rise:), transit time (Transit:), set time (Set:), size
(Size=), and associated constellation (Constellation:).
4. Press ENTER to proceed to the next step.
5. Go To the Object: Slewing to an object involves the
same procedure as described for the other objects
above (see Section 4.1).
4.6User-Defined Objects
The SynScan hand controller allows you to save up to 25
objects in the User-Defined database. You can save currently
unknown objects, unidentifiable objects, current comet and/or
asteroid positions, or you can make a custom list of your favorite objects to view.
11
Defining and saving an object to the database
1. Press the “USER” shortcut key. The screen will display
“User Object”.
2. Press the scroll keys until “New Object” is displayed
on the screen, then press the ENTER key. The screen
will display “Coord. Type 1) RA-DEC 2) Mount.” Press
“1” to enter R.A./Dec. coordinates for a celestial
object; press “2” to enter Alt-azimuth coordinates
for a land object. If “RA-DEC” is chosen, the screen
will display the coordinates to which the telescope is
currently pointing. If “Mount” is chosen, the screen will
display the coordinates of the mount’s two axes. The
first number is the coordinates of the R.A. or azimuth
axis, while the second number is the coordinates of
the Dec. or altitude axis.
3. Edit the coordinates using the numeric keys and scroll
keys. Press ENTER to save the chosen setting.
4. The screen will display “Save?” Press the ENTER key
to start saving the coordinates. (Or press the ESC
key to proceed to the next step without saving the
coordinates.)
5. The hand controller will prompt you to choose a
storage space index number between 1 and 25 for
your chosen object. Select the number you wish to
represent the coordinates, using the scroll buttons.
Press ENTER to confirm.
6. Once the object coordinates are represented by
a number, the hand controller will display “View
Object?” Press ENTER to slew the telescope to the
coordinates. Press ESC to exit.
Selecting a user defined object
1. Press the USER shortcut key. The screen will display
“User Object / Recall Object”. Press ENTER.
2. Use the scroll keys to browse through the list of
pre-defined objects indexed from 1 to 25. Select the
number representing the object you wish to view,
then press ENTER to display the object’s coordinates.
Press the ENTER key again to proceed.
3. The screen will now display “View Object?” Press
ENTER to slew the telescope to the selected object.
Press ESC to exit.
5. Configuring Hand
Controller and
Mount Settings
The MENU and UTILITY shortcut keys are the entry points
for configuring many aspects of the mount and hand controller. The different types of functions available are listed below,
along with their respective purposes. Press the MENU or
UTILITY keys, as directed below, to access them.
12
5.1Date, Time, Site, Time Zone, and Daylight
Saving Time
• Date – Allows you to change the date entered at the initial
setup.
• Time – Allows you to change the current time.
• Observation Site – Allows you to change the current
location settings.
• Daylight Saving – Allows you to change the Daylight Saving
option.
• Alignment – Allows you to re-perform the 1-star, 2-star, or
3-star alignment for GoTo operation at any time without
restarting the mount (see Section 5.10).
5.2Hand Controller Display and Keypad Settings
1. Access “MENU \ Handset Setting” and press the
ENTER key.
2. Use the scroll keys to select “LCD Contrast,” then use
the left/right direction keys to adjust the contrast of the
LCD text characters.
3. Use the scroll keys to select “LED Backlight,” then
use the left/right direction keys to adjust the LED
brightness of the hand controller keys (buttons).
4. Use the scroll keys to select “LCD Backlight,” then use
the left/right direction keys to adjust the brightness of
the LCD screen’s backlight.
5. Press ESC to exit the adjustment.
5.3Backlash Compensation
Backlash is a delay in motorized motion of the mount due to
slack between gears. This delay, or hesitation, is experienced
when the slewing direction is reversed on one or both axes
of motion using the direction keys on the hand controller. So
when you’re looking at an object in the eyepiece, it will not
move immediately upon pressing a direction key – there will
be a lag time.
The SynScan hand controller can compensate for backlash by
commanding the mount to slew at a higher speed for a specific
amount of distance when the user reverses direction with the
direction keys. With such backlash compensation you’ll get a
faster response from the mount.
This function allows you to insert a value for each axis to compensate for slewing backlash experienced on that axis. For
improved pointing accuracy, it is important that the backlash
value is set to be equal or greater than the actual amount of
backlash between the gears. If the actual amount of backlash
is unknown, we recommend that you set the value to 5000
(approximately equivalent to 0.2°). First set the value for R.A.
backlash, then press ENTER to set the value for DEC.
1. Access “MENU / Backlash” and press the ENTER key.
2. The screen will display “Azm = X°XX'XX" ” or “RA
= X°XX'XX" ”. Use the Left/Right keys to move the
cursor and use the numeric keys to fill in a number at
the cursor position to input the amount of backlash
in the azimuth or R.A. axis. Press the ENTER key to
finish the input and proceed to the next step.
3. The screen will display “Alt = X°XX'XX" ” or “Dec
= X°XX'XX" ”. Fill in the amount of backlash in the
altitude axis or Dec. axis and then press the ENTER
key.
Notes:
• Set the backlash value to 0 for an axis to disable backlash
compensation for that axis.
• Backlash compensation is only active for computerized
GoTo slewing, not for manual slewing with the direction
buttons.
5.4Tracking Rate
The mount can track at several different rates, which you
select depending on the type of object(s) you’ll be observing
or photographing.
1. Access “MENU \ Tracking” and press the ENTER key.
2. Use the scroll keys to browse the various options, and
press the ENTER key to pick one.
• Sidereal Rate: This is the default tracking rate.
Activates tracking at sidereal rate (R.A. tracking) for
observing/photographing stars, deep-sky objects,
and planets.
• Lunar Rate: Activates tracking at lunar rate (R.A.
tracking) for observing/photographing the Moon.
• Solar Rate: Activates tracking at solar rate (R.A.
tracking) for observing/photographing the Sun.
• PEC + Sidereal Rate: Activates sidereal rate
tracking and turns on Periodic Error Correction
(PEC). Applies to equatorial mounts/mode only.
• Stop Tracking: Turns off the tracking function.
Note: You can turn on the tracking without performing a star
alignment procedure. In this case, the polar alignment should
be rather accurate for an equatorial mount; and the mount
must be set up to the proper home position before turning on
the power (refer to Section 2.1).
5.5Autoguide Speed
For astronomical imaging, some Orion equatorial mounts or
dual equatorial/alt-azimuth mounts have a designated autoguider interface. The pin-outs on the 6-pin modular connector are
ST-4 compatible and can be used with most autoguiding cameras currently available. The guiding speed can be adjusted
using the Auto Guide Speed function in the Setup Menu.
1. Access “MENU \ Auto Guide Speed” and press the
ENTER key.
2. Use the scroll keys to choose one of the following
guiding speeds: 0.125X, 0.25X, 0.5X, 0.75X, or
1X, and then press the ENTER key. The default
autoguiding speed is 0.5X.
5.6Setting Meridian Flip
On an equatorial mount, the SynScan hand controller automatically decides whether to perform a meridian flip at the
beginning of a GoTo command. If the object being targeted lies
close to the meridian on its east side, the software will flip the
mount so that the telescope is on the east side, to prevent the
telescope from bumping against the tripod.
Astrophotographers can override the automatic meridian
flip and “force” a meridian flip prior to beginning an imaging
sequence on a particular object. This is a very useful feature,
obviating the need to flip the scope to the east side during
a long imaging sequence. You can now do it before you start
the sequence. There is no limitation on how far in front of the
meridian an object can be in forcing a meridian flip – other
than physical limitations presented by your telescope and tripod.
To set the meridian flip mode, go to Setup\Flipping Mode.
• Scroll to Auto Flipping and press ENTER to let the hand
control decide automatically whether to perform a meridian
flip.
• Scroll to Force Flipping and press ENTER to force the
mount to perform a meridian flipping for the next GoTo
object only.
• Scroll to No Flipping and press ENTER to prevent the
mount from performing a meridian flip¬ for the next GoTo
object only.
Note that the size of your telescope and its orientation when
it’s pointed at the object you’re targeting will influence whether
a meridian flip can be achieved without the telescope contacting the tripod or pier. So during a meridian flip you should
monitor the telescope carefully as it slews and be ready to
hit the ESC key to stop the slewing immediately if the telescope is getting too close to the tripod or pier! Failing to
do so could cause damage to your “flipping” equipment!
5.7Altitude Axis (Elevation) Slew Limits
Some alt-azimuth mounts have limited slewing range on their
altitude axis, or users may need to set slewing limits for some
equatorial mounts. Users can set the upper or lower altitude
limit for such mounts.
• When you select an object whose altitude exceeds the
altitude limits of an alt-azimuth mount, or the elevation
slewing limit of an equatorial mount, the SynScan hand
controller will display “Target is over slew limits!!” and will
not initiate slewing.
• When you use the Up or Down direction keys to slew the
altitude axis to exceed the altitude limits of an Alt-azimuth
mount, the SynScan hand controller will automatically
stop the altitude axis and display “Over slew limit. Slewing
stopped!” In this case you have to press any key and the
SynScan controller will bring the altitude axis back.
Follow these steps to set the altitude slewing limits:
1. Access “MENU \ Elevation Limits”, and press the
ENTER key.
2. Use the scroll keys to choose options “Enable” or
“Disable,” then press the ENTER key to confirm.
3. If “Disable” is chosen, the SynScan hand controller
will turn off the altitude limit.
13
4. If “Enable” is chosen, the SynScan hand controller will
turn on the altitude limit, and you can input the upper
and lower limits as follows:
• For an alt-azimuth mount or mode, the alignment
star’s altitude must be below 75 degrees or within
the altitude limits defined by the user (Section 5.6).
• The screen will display “Set Elev. Limits:” in the top
row, and “Upper=+XXX. X°” in the bottom row. Use
the Left/Right keys to move the cursor and use the
numeric keys to fill the upper limits. The leading
sign can be changed with the scroll keys. Press the
ENTER key to end the input and proceed.
5.10Sorting Method of Alignment Stars
1. Access “MENU \ Alignment Stars \ Sort by” and press
the ENTER key.
• The screen will display “Lower=+XXX. X°” at the
bottom row; fill in the data in a similar way.
5.8Enable/Disable Auxiliary Encoder
Some Orion telescopes and mounts are equipped with auxiliary encoders on their primary axes to support manually moving the scope without upsetting the mount’s GoTo alignment
status. Users may turn off the auxiliary encoder to obtain the
best pointing accuracy. The auxiliary encoder can be turned on
again at any time for manually moving the mount.
1. Access “MENU \ Auxiliary Encoder” menu and press
the ENTER key.
2. Use the scroll keys to select between “Enable” or
“Disable” and press the ENTER key.
2. Use the scroll keys to select “Magnitude” or “Alphabet”
and the press the ENTER key to sort the list
accordingly.
5.11Naming of Stars
1. Access “MENU \ Alignment Stars \ Set Star Name”
and press the ENTER key.
2. Use the scroll keys to choose between “Common
Name” and “Bayer Designation”, press the ENTER
key to confirm.
5.12Re-aligning the Mount
You can execute a 1-star alignment, 2-star alignment, or 3-star
alignment at any time with­out restarting the mount.
1. Access “MENU \ Alignment” and then press the
ENTER key.
Note: After re-enabling the auxiliary encoders, it is recommended to use the direction keys to move both axes a bit
before commanding the hand controller to locate an object.
2. Use the scroll keys to select an alignment method and
press the ENTER key to start the alignment process.
For detailed instructions on alignment, please refer to
Section 3.
Note: For some Orion mounts, which are not equipped with
auxiliary encoders, when accessing the Auxiliary Encoder, the
hand controller display will show “Not available!” and return to
the previous step.
5.13Show Position
This function displays the coordinates of the point in the sky
at which the telescope is aimed. Access the menu “UTILITY
FUNCTION \ Show Position” and press the ENTER key.
5.9Alignment Star Filter
Not all combinations of alignment stars are good for a 2-star
alignment or 3-star alignment. The SynScan hand controller
uses a built-in advanced alignment star filter to show only
the stars that are suitable to work with the 1st or 2nd alignment star(s), when asking the user to choose the 2nd or 3rd
alignment star. This helps to improve the success rate of the
­alignment.
Use the scroll keys to choose one of the following coordinate
types:
Some advanced users or those who have limited sky visibility
can turn on/off this advance filter with the following steps:
1. Access “MENU \ Alignment Stars \ Adv. Filter” and
press the ENTER key.
2. Use the scroll keys to choose “OFF” and then press
the ENTER key to disable the filter.
3. Use the scroll keys to choose “ON” and then press the
ENTER key to enable the filter.
Note: Even if the advanced filter function is turned off, the
SynScan hand controller will still apply the following rules to
generate the list of alignment stars:
• The alignment star’s altitude must be above 15
degrees.
• For an equatorial mount or mode, the alignment
star’s declination must be between -75 and +75
degrees.
14
• Dec/RA: Displays the current equatorial coordinates of the
telescope.
• Alt/Azm: Displays the current altitude and azimuth
coordinates of the telescope.
• Ax1/Ax2: Displays the current coordinates of the mount.
Ax1 is the position of the declination or altitude axis, and
Ax2 is the position of the R.A. or azimuth axis.
Note: You can use the direction keys to slew the mount to
specific coordinates by referring to the real-time coordinates
display.
5.14Show Time and Local Sidereal Time
To display the current local sidereal time (LST) and the local
time, access the menu “UTILITY FUNCTION \ Show Information \ Time” and press the ENTER key.
5.15Display Version Information
Access the menu “UTILITY FUNCTION \ Show Information \
Version” and press the ENTER key, and then use the scroll
keys to browse through the following information. Press the
ESC key to exit.
• H.C. Firmware: The firmware version of the SynScan hand
controller.
• Database: The database version of the SynScan hand
controller
• H.C. Hardware: The hardware version of the SynScan hand
controller.
• Motor Controller: The firmware version of the mount’s
internal motor controller board.
• H.C. Serial No.: The serial number of the SynScan hand
controller.
5.16Display Power Voltage
To display the voltage of the power supply used to power the
telescope or mount, go to “UTILITY FUNCTION \ Show Information \ Power Voltage” and press the ENTER key.
5.17Display Polaris Position
This function can aid in achieving an accurate polar alignment
when using the mount’s polar axis finder scope. Imagine the
large circle around the celestial pole (cross in center) in the
polar scope’s field of view as a clock’s face, with 12:00 at the
top, and put Polaris at the “HH:MM” position of the large circle.
1. To do this, access the menu “UTILITY FUNCTION
\ Show Information \ Polaris Pos.” and press the
ENTER key. The screen will display “Polaris Position
in P.Scope = HH:MM.” Use the scroll keys to display
“Polaris HA = HH:MM”, where HA stands for Hour
Angle. Press the ESC key to exit.
5.18Display Polar Alignment Error
Checking the polar alignment error will tell you how accurate
your polar alignment is, which will allow you to decide if you
should perform the polar alignment procedure again or if it’s
“good enough” for your purpose.
1. Access the menu “UTILITY FUNCTION \ Show
Information \ Polar Align. Error” and press the ENTER
key. The screen will display “Mel=+DDD°MM'SS"
Maz=+DDD°MM'SS" ”. The “Mel” value is the polar
alignment offset in elevation, and the “Maz” value is
the polar alignment offset in azimuth. The data is valid
only after a 2-star or 3-star GoTo alignment.
5.19Changing Polar Scope Illumination Level
This function applies only to certain Orion mounts that are
equipped with a variable-brightness polar scope illuminator.
1. Access the menu “UTILITY FUNCTION \ Polar Scope
LED” and press the ENTER key.
2. Use the Left/Right direction keys to adjust the
illumination level. Press the ENTER key to confirm
and exit.
6. Advanced Functions
6.1Identifying Objects
After aligning the mount for GoTo operation, the SynScan
hand controller can be used to identify any object at which the
telescope is pointing.
1. Center the object to be identified in the telescope’s
eyepiece.
2. Press the “ID” shortcut key. The screen will display
“Identify: Searching…”. The SynScan hand controller
will look up the named stars, planets, Messier objects,
NGC objects, and IC objects within a 5 degrees range
of the object centered in the eyepiece.
3. The screen will display “No object found” if the
SynScan hand controller cannot identify the object.
4. If an object is found within the 5-degree range, the
screen will display the object’s name in the top row,
and the deviation from the object in the center of the
eyepiece.
5. If multiple objects are found, use the scroll keys to
browse through the list of identified objects.
6. Press the ENTER key to select an identified object
and then use the scroll keys to read its data, such as
the J2000 celestial coordinates, magnitude (MAG= ),
rising time (Rise: ), transit time (Transit: ), setting
time (Set: ), size (Size= ), associated constellation
(Constellation: ), etc.
7. Press the ESC key to exit.
6.2Synchronizing Encoders
For telescopes or mounts that are not equipped with auxiliary
encoders, if the mount loses the correct position of either of
its two axes – for example, if an axis is manually moved – the
pointing accuracy will be compromised when the SynScan
hand controller tries to locate an object.
Providing the base of the mount or its tripod was not moved,
you can recover the pointing accuracy with the “Synchronize
Encoder” operation.
1. Access “MENU \ Sync. Encoder” and press the
ENTER key.
2. Use the scroll keys to select an alignment star and
press the ENTER key. The mount will point the
telescope toward the alignment star.
3. After the mount has stopped, use the direction keys to
center the alignment star in the eyepiece, then press
the ENTER key to confirm.
4. The SynScan hand controller will display “Sync
Encoder Completed.” Press any key to exit.
6.3Parking the Telescope
If the mount has not been moved after an observing session,
you can “park” the telescope to keep the alignment data, PAE
data, and PEC data, and start your next observing session
without having to redo the GoTo alignment and calibration.
Parking
1. Access the menu “UTILITY FUNCTION \ Park Scope”
and press the ENTER key.
2. The screen will display “Park to…” Use the scroll keys
to choose one of the following parking positions and
press the ENTER key.
• Home Position: Park the telescope in the Home
Position (refer to Section 2.1).
15
• Current Pos.: Park the telescope in its current
position.
• Custom Position: Park in the same position you
used after the previous observing session.
3. The mount will slew to the parking position (except
parking at the current position). When the mount stops
the screen will display “Position saved. Turn off power”.
4. You may now turn off power to the mount, or press the
ESC key to cancel parking.
Resuming from Parked Position
1. Turn on power to the mount.
2. Pass through the initial steps.
3. When the screen displays “Start from Park? 1) Yes
2) No”:
• Press “1” to resume operation of the mount from
the parked status. After the regular initialization
steps, the SynScan hand controller will be ready for
full feature operation like in the previous observing
session.
• Press “2” to abandon the previous saved park
position and alignment data and start a regular
observing session.
6.4Pointing Accuracy Enhancement (PAE)
The pointing accuracy enhancement (PAE) function enables
the telescope mount to achieve enhanced pointing accuracy in
specific areas of the sky.
After a 1-star, 2-Star or 3-star alignment, the telescope mount
might still have a small pointing error due to many factors,
such as the flexure of the telescope, atmospheric refraction,
or other mechanical issues. The amount of pointing error may
vary in different portions of the sky.
The SynScan hand controller divides the sky into 85 small
zones, and you can calibrate the pointing error for each of
these zones. The next time the SynScan controller tries to
locate an object in the calibrated zone (or a zone nearby), it
will automatically apply the recorded calibration data to compensate for the pointing error. This function is useful for locating faint deep sky objects, and it is also helpful to obtain consistent pointing accuracy for a permanent observatory.
Perform the following procedure to use the PAE function:
1. Perform a 1-star alignment, 2-star alignment, or a
3-star alignment.
2. Choose a bright star near the area of interest in the
night sky. Consult a star map or software program to
choose the star, if necessary.
3. Find this reference star in the hand controller’s object
database (Named Stars) and press ENTER to select
the star. Press ENTER again, and the LCD will ask
“View Object?” Press ENTER to issue a command to
the mount to go to the star. If the mount is under the
control of a computer running planetarium software,
click on the star to slew the mount to it.
16
4. Use the direction keys to accurately center the star
in a high-powered eyepiece (10mm or less focal
length), or preferably, an illuminated reticle eyepiece.
Remember to end the centering operation by pressing
the Right and Up direction keys together.
5. Use one of the following operations to start the PAE
calibration:
• Press the “UTILITY” shortcut key, access the
sub-menu “PAE \ PAE Correction,” then press the
ENTER key.
• Or, press and hold the ESC key for 2 seconds.
6. The LCD screen will read “Recentering Obj.:” in the
first row, and the name of the reference star in the
second row. (If the GoTo command was sent by a
computer running planetarium software, the LCD will
read “The last target” instead of the star’s name.)
7. Make sure the chosen star is still centered in the
eyepiece (center it again if needed, as in Step 4), and
press the ENTER key.
After the PAE function is performed, the hand controller will
recalculate its model of the sky. The pointing accuracy in the
area of sky around the chosen bright star should now be
improved. To improve pointing accuracy in another region of
the sky, perform the PAE function again, this time choosing a
bright star in the new region of interest.
Note: Whenever the SynScan hand controller locates an
object, it will automatically check whether PAE calibration data
is available, and apply the compensation accordingly. No manual intervention is required. If more than one PAE calibration is
performed in the same zone, the previous calibration data will
be overwritten.
You can access the menu “UTILITY FUNCTION / PAE / Clear
PAE data” to clear all PAE calibration data. The PAE calibration data will be automatically cleared after a 1-star alignment,
2-star alignment, or 3-star alignment.
Note: If the mount is “parked” before it is powered off, the star
alignments and PAE corrections will remain stored in the hand
controller. As long as the mount is not moved once parked,
the alignment will not need to be performed again when it is
subsequently powered on.
6.5Camera Control
The SynScan hand controller can control a DSLR camera
to do astrophotography. It can accept eight different sets of
exposure parameters, and then control the camera to take the
exposure sets without manual intervention.
To use the camera control function, the camera must be
equipped with a shutter release control port and be set to the
“Bulb” exposure mode.
Connecting the Camera
1. Using the SNAP port on the telescope mount:
Select Orion equatorial mounts, such as the Atlas
Pro AZ/EQ-G and HDX110 EQ-G, are equipped
with a SNAP port on the drive panel. You’ll need an
appropriate shutter control cable to connect your
DSLR camera to the 2.5mm SNAP port.
2. Using the serial port on the SynScan hand
controller: The SynScan hand controller uses 2 pins
(The SHUTTER and COMMON pins in the diagram
of Appendix E of its serial port to control the shutter
release of a DSLR camera. Use a proper shutter
control cable to connect the SynScan hand controller
and a camera.
Set Up Control Parameters
1. Press the “UTILITY” shortcut key, access the submenu “Camera Control \ Configuration” and press the
ENTER key.
2. Edit the “interval” time; that is, the time between each
exposure (in MM:SS format) and press the ENTER
key.
3. Use the scroll keys to browse through the list of 8
groups of parameters. A sample screen-shot is shown
here:
Select a Group
1. mm:ss X 000
The first number (“1”) is the index number of this set; the
“mm:ss” data is the exposure time in minutes and seconds;
and the last 3 digits are the number of frames to be shot, up
to 999. Press the ENTER key to pick a group and proceed to
the next step.
4. The first row of the screenshot below indicates the
index number of the set being edited. The second row
shows the exposure time of this group.
Edit Group#1
Exposure mm:ss
• Use the numeric keys to enter the exposure time,
then press the ENTER key.
• Now the screen is changed to set the number of
frames to be shot for this set, as shown below. Use
the numeric keys to enter the number of frames
after the word “Repeats” and press ENTER.
Edit Group#1
Repeats 000
• The SynScan hand controller will return to Step 2,
where you can enter another set of exposures, if
desired.
Note: To disable an exposure set, set either the “Exposure” or
the “Repeats” parameter to 0.
5. After setting the parameters for your exposure set(s),
press the ESC key to exit the configuration process.
Batch Exposure
1. Set the camera to “Bulb” exposure mode.
2. Press the “UTILITY” shortcut key, access to the
sub-menu “Camera Control \ Shoot,” and press the
ENTER key.
3. The SynScan hand controller will start the first
exposure set and display the progress data on the
screen. A sample screenshot is shown below:
Shooting#1: 003
Released mm:ss
• The top row shows the set index and the number of
frames pending.
• The bottom row shows the remaining exposure time
of the current frame.
• At the end of each frame, the SynScan hand
controller will give a beep and wait for the pre-set
time interval before the next exposure.
4. During the exposure, you can press the ESC key to
suspend the operation. The screen will display “Shoot
Suspended. 1) Resume 2) Exit.” Press the “1” key to
resume the exposures or press “2” to exit.
Shoot Suspended
1) Resume 2) Exit
6.6Periodic Error Correction (PEC) for EQ Mount
Almost all equatorial mounts that use worm gears have a periodic tracking error, which is due to slight eccentricities and misalignments in the gears. Periodic error is not critical for visual
observing but might lower the image quality in long-exposure
astrophotography if not minimized. The SynScan hand controller has a periodic error correction (PEC) function to improve
the tracking performance for astrophotography. The PEC training function provides a correction to reduce the amplitude of
the worm gear errors. By recording the guiding actions over
one full worm gear cycle, SynScan can then “play back” those
actions with each subsequent worm cycle to compensate for
drifting in the R.A. sidereal tracking caused by periodic error.
Orion equatorial mounts feature two different types of PEC,
depending on the model of the mount. One type is softwarebased PEC (SPEC), which applies to Orion’s SkyView Pro
GoTo, Sirius EQ-G, and Atlas EQ-G mounts. The other type is
permanent PEC (PPEC), which comes standard with the Atlas
Pro AZ/EQ-G and HDX110 EQ-G mounts. The SynScan hand
controller detects the mount model and chooses the appropriate PEC algorithm.
Note: PEC training is recommended for advanced users with
interest in long-exposure astrophotography only. Careful guiding is required. Standard sidereal tracking is sufficient for
casual visual applications, and PEC training is not required.
PEC Training
For mounts that support standard, or software-based PEC,
such as the Sirius EQ-G and Atlas EQ-G, you’ll need to manually (visually) guide for at least one full worm cycle using an
illuminated reticle eyepiece capable of producing at least 300X
magnification with your telescope. For best results, the true
field of view should not exceed 10 arcminutes.
For mounts that support PPEC, such as the Atlas Pro AZ/
EQ-G and HDX110 EQ-G mounts, an autoguiding camera can
be used instead of manual guiding for the PEC training pro-
17
cess. In such cases, it is recommended to turn on the autoguider for at least one minute before starting the PEC training
process. The total time for the PEC training of these mounts
can be as long as two cycles of the period error.
• To re-use the PEC data on a mount that supports SPEC,
users should “park” the telescope before shutting off power
(refer to Section 6.3). This stipulation does not apply to
mounts that support PPEC.
The following step-by-step procedure below describes how to
perform the PEC training function manually, using an illuminated reticle eyepiece.
6.7Calibrating Auto-Home Offset
The Orion HDX110 EQ-G mount has an Auto-Home function
that can automatically set the mount to a standard home position after turning on the power. The offset of the home position can be calibrated and compensated with the following
­procedure:
1. Perform an accurate polar alignment, then perform a
GoTo star alignment.
2. Then choose a star close to the celestial equator, i.e.,
with a small Dec. value (Dec. between +10° and –10°).
This object will be used as the guide star. Point the
telescope toward it and start the mount tracking.
3. Rotate the reticle eyepiece in the focuser (or diagonal)
until the R.A. movement of the star (i.e., its movement
when you press the Left or Right direction button)
runs parallel to one set of the illuminated crosshairs.
Then center the star on the crosshairs of the
eyepiece’s reticle.
4. Access the menu “UTILITY FUNCTION \ PEC
Training” and press the ENTER key. The screen will
display “Select Speed: 1) 0.125X 2) 0.25X.” This is
the speed used to move the star in the FOV of the
telescope when you press the Left or Right direction
key on the SynScan hand controller. Choosing a
0.125X sidereal rate is recommended for a longer
focal length telescope, and a 0.25X sidereal
rate is recommended for a shorter focal length
telescope. Press the “1” or “2” key to make a
selection and proceed to the next step.
5. The screen will display the elapsed time once the
guide speed has been selected, indicating that the
recording of the guiding actions has begun. Use the
Left and Right direction keys to control the mount and
keep the star centered in the reticle eyepiece until
the PEC training time is up and the SynScan hand
controller stops displaying the time. (If the star drifts in
declination, it doesn’t matter. PEC is only concerned
with corrections of movement in R.A.) The total time
for this training process depends on your particular
mount model, but it will be at least several minutes.
Pressing ESC will immediately stop the recording and
exit from the PEC training function.
PEC Replay
Once PEC training is completed, PEC tracking can be turned
on by accessing “MENU \ Tracking \ PEC+Sidereal,” then press
the ENTER key to start the PEC replay. The SynScan will play
back the guiding corrections you made during the PEC training
cycle to compensate for the periodic error.
Notes:
• The PEC + Sidereal tracking rate will be accurate only after
at least one full cycle of PEC training is performed.
• After turning on the PEC + Sidereal replay, wait for at least
one worm cycle before taking a picture.
18
1. Accurately polar-align the HDX mount.
2. Turn off the power, then turn it on again, and then
initialize the hand controller.
3. When the SynScan hand controller displays “AutoHome?,” press the “1” key to execute the auto-home
process.
4. Finish the subsequent initialization steps.
5. At the end of the initialization, choose 1-star alignment
to align the mount.
6. At the end of the 1-star alignment, the hand controller
will ask “Update H.P.O? 1) No 2) Yes” (“H.P.O.” stands
for Home Position Offset).
• Press “1” to keep the original Home Position Offset.
• Press “2” to use the results obtained from the 1-star
alignment to calibrate the home position offset.
6.8Polar Alignment without Polar Scope
Polar alignment of your mount by means of the polar-axis
scope is covered in the instruction manual for the mount.
However, there is another, more accurate way to polar align.
This software-based polar alignment routine can be performed
without use of the polar-axis scope. You will need to use a reticle eyepiece for this procedure to ensure precise centering of
the stars in the eyepiece field of view.
1. Complete a 2-star alignment or 3-star alignment. At
the end of the alignment, the SynScan hand controller
will display the polar alignment error in altitude (Maz)
and azimuth (Mel) (refer to Section 5.17). Based
on the error given, you can decide whether it will be
necessary to adjust the polar alignment.
2. Press the “MENU” shortcut key, and then access to
sub-menu “Alignment\Polar Alignment”. Press the
ENTER key to proceed to the next step.
3. The screen will display “Select a Star”.
• Use the scroll keys to browse through a list of star
names and press the ENTER key to pick one as the
reference star for polar alignment.
• The mount will start slewing to point the telescope
to the reference star.
4. Use the direction keys to center the reference star in
the eyepiece of the telescope after the mount stops
slewing. Remember to end the centering operation
with Up and Right direction keys. Press the ENTER
key to proceed to the next step.
errors can be compensated for with settings on the hand controller.
5. The screen will now display the polar alignment error
in altitude (Mel=dd°mm'ss"). You can then use the
data to determine whether or not to adjust the altitude
of the R.A. axis. Press the ENTER key again to
proceed to the next step.
1. Access the menu “Setup\Alignment\Cone Error” to
display and modify the cone error (CE).
6. The mount will slew to a new position. When it
stops, the screen will display “Adjust Altitude:” By
using ONLY the altitude adjustment mechanism of
the mount (DO NOT touch the azimuth adjustment
mechanism and DO NOT use the direction keys on
the hand controller), bring the reference star back
to the closest point to the center of the FOV of the
telescope’s eyepiece. Remember the reference star’s
position in the eyepiece for later adjustment. Press the
ENTER key to confirm the centering operation.
7. The screen will now display the polar alignment error
in azimuth (Maz=dd°mm'ss"). You can then use the
data to determine whether or not to adjust the azimuth
of the mount. Press the ENTER key again to proceed
to the next step.
8. The mount will slew to a new position. When it
stops, the screen will display “Adjust Azimuth:” By
using ONLY the azimuth adjustment mechanism of
the mount (DO NOT touch the altitude adjustment
mechanism, DO NOT use the direction keys on
the hand controller), bring the reference star back
to the closest point to the previous position (at the
end of Step 6). Press the ENTER key to confirm the
centering operation.
9. The screen will display the polar alignment error
again, press the ENTER button to end the polar
alignment process. It should be an improvement over
what was given in Step 1.
10.Go back to the “Alignment” menu on the SynScan
hand controller and execute another 2-Star or 3-Star
alignment, and then check the polar alignment error
data reported at the end of the 2-star alignment or
3-star alignment. Repeat Step 2 to Step 8 until the
error is small enough to be acceptable. Generally, you
can expect to get up to 1 arc-minute polar alignment
accuracy after repeating this polar alignment process
2 or 3 times.
6.9Setting Cone Error and Non-Perpendicular
Error
• Cone Error (CE) occurs when a telescope’s optical axis is
not perpendicular to the equato¬rial mount’s declination
axis (or the alt-azimuth mount’s altitude axis).
• The cone error compensation will be applied to
1-Star, 2-Star, and Brightest-Star align¬ments.
• In a 3-Star alignment, the SynScan hand controller
measures the current cone error and over¬writes
the old cone error value.
• Cone error is quite common in telescope systems,
but an alt-az mount is less sensitive to cone error.
Generally, you can set cone error to 0 on an alt-az
mount.
2. Access the menu “Setup\Alignment\NP Error” to
display and modify non-perpendicular error (NPE).
• Generally, NPE is very small and can be ignored,
i.e., set to 0, in most cases unless superior pointing
accuracy is required.
Note: If the value of CE or NPE entered in the hand controller
is not 0, it will display a reminder message “CAUTION: Prev.
NPE, CE applied” at the end of the alignment routine. You
should make sure that the stored CE and NPE parameters are
correct for the current system setup; otherwise, these values
should be set to 0.
6.10Astronomical Time-Lapse Photography
The SynScan hand controller can command an Orion GoTo
telescope mount (equatorial or alt-az mount) and a DSLR
camera to take series of long exposure photographs of the
night sky. This series of photos can then be used to make
a time-lapse video. The SynScan accom¬plishes this task
through the following sequence.
1. At an initial position, turn on sidereal tracking of the
mount and release the shutter of the camera at the
same time.
2. Keep mount tracking on and the camera shutter open
until the preset exposure time is reached.
3. Then close the camera shutter and return the mount
to the initial position.
4. Repeat steps 1 to 3 until the preset number of photos
is taken.
Operation Details:
1. Connect the camera’s shutter control port to the
mount (or SynScan hand controller) with proper
cables.
2. Point the camera to the desired orientation.
• Non-Perpendicular Error (NPE) occurs when the mount’s
two axes are not orthogonal.
3. Access the menu “UTILITY\Astro Time-Lapse\
Configuration\Exposure Time” to set the exposure
time of the camera.
Without proper compensation, both of the above errors could
lead to inaccurate pointing when the telescope system tries
to locate a celestial object automatically. The value of these
4. Access the menu “UTILITY\Astro Time-Lapse\
Configuration\Repeat Times” to set the number of
photos to be taken.
19
5. Access the menu “UTILITY\Astro Time-Lapse\
Configuration\Shoot” to commence taking photos.
6. The LCD will display remaining photos and remaining
time of the ongoing exposure.
7. Press the ESC key to pause or cancel the sequence.
7. Connecting SynScan to
a Computer
7.1Working with Astronomical Software
Programs
The SynScan V4 hand controller can communicate with a
computer via the RS-232 port at the bottom of the controller
(Figure 1b). In this way you can use many commercially available planetarium software programs to control your GoTo telescope or mount, essentially bypassing the hand controller’s
interface. The computer must have an RS-232C serial port;
otherwise, an optional USB-to-Serial adapter is required. Connect the SynScan hand controller to the computer (or USB-toserial adapter) with the RJ-12 to DB-9 serial cable supplied
with your telescope or mount.
7.2PC Direct Mode
PC Direct Mode is a special mode for the SynScan hand controller to work with a PC. Under this mode, the hand controller
becomes a repeater between the PC and the motor controller
inside the telescope mount. The application running on the PC
controls the motor controller directly.
Currently, the PC direct mode is mainly used to update the
motor controller’s firmware.
1. Access the menu “UTILITY FUNCTION \ PC Direct
Mode” and press the ENTER key. The screen will
display “PC Direct Mode \ Press ESC to exit.”
2. Press and hold the ESC key for more than 1 second
to exit PC Direct Mode.
You can still use the direction keys to move the telescope
mount.
8. Updating Firmware
8.1Hardware Requirements
• A SynScan V4 hand controller with firmware version 3.0 or
later.
• A computer running Windows (Win 95 or later).
• An RS-232C serial port on the computer, or a USB-toSerial adapter.
• The PC interface cable (DB-9 to RJ-12, typically), which is
usually included with a GoTo telescope or mount.
• A 12V DC power supply or battery.
8.2Preparation
1. Create a new folder in the computer (for example, C:\
SynScan) to save relevant files.
20
Figure 4. Application window for SynScan firmware loader.
2. Download the “SynScan Firmware Loader” application
package from www.OrionTelescopes.com and extract
the file “SynScanFirmwareLoader.exe” to the above
folder.
3. Download the latest firmware package and extract the
“.SSF” file to the above folder.
8.3Updating Firmware
1. Connect the computer and the SynScan hand
controller with the PC interface cable.
2. Press and hold the “0” and “8” keys simultaneously,
and then power on the hand controller. The hand
controller will display “SynScan Update” on the
screen. Release the “0” and “8” keys.
3. On the computer, run the SynScanFirmwareLoader.
exe file. An application window is shown in Figure 4.
• Use the “Browse” button to load the latest firmware
file (“.SSF” file).
• Check the “Enforce database update” to enforce
updating the hand controller’s database. Or uncheck
it to let the application determine whether an update
is needed.
• Check the “Auto-detect COM port” to let the
application detect the proper serial port that will
connect to the SynScan hand controller. Or uncheck
it to manually choose the COM port. Select one
from the “COM port” drop-down list.
• Click the “HC Version” button to check the versions
of the hardware, firmware, and database.
• Click the “Update” button to start loading the
firmware to the SynScan hand controller.
4. After the loading starts, the application will display a
percentage number at the bottom of the window to
show the progress.
5. Once update is complete, the application will display
a green bar with “Update Complete” at the bottom of
the window.
8.4Troubleshooting
1. If a window pops up and displays the message:
“Cannot connect to a SynScan hand control” after
clicking the “Update” button or the “H.C. Version”
button, close the message window and click the
“Update” button or the “H.C. Version” button to try
again. If the application displays the message again,
check the cable connections and ensure the USB-toSerial port adapter is working, and that you have the
proper drivers installed for it on your computer.
2. If the firmware update fails, the SynScan Firmware
Loader will pop up a window with message “Firmware
update failed. Cycle power to SynScan and try again!”
Close the window and power off the hand controller.
Then repeat the firmware update process again.
3. If the update process failed in the middle of updating,
try to press the SETUP button on the SynScan hand
controller to use other communication speeds: “Mi”
(medium speed) or “Lo” (low speed).
9. Using a SynScan
GPS Module
The optional SynScan GPS module automatically acquires
accurate local geographical coordinates and local time, obviating the need for the user to input the data themselves. The
GPS data helps to improve the accuracy of the GoTo alignment and the polar alignment.
9.1Initialization of Hand Controller with SynScan
GPS Module
The initialization process of the SynScan hand controller with
a SynScan GPS adapter differs from the standard initialization
process.
1. Plug the SynScan GPS module into the serial port
located at the bottom center of the SynScan hand
controller. Place the GPS module on a horizontal
surface and turn on the power of the mount.
4. The screen will now display “GPS fixing…” This
means that the GPS module is trying to fix on the
GPS satellites.
5. After the SynScan GPS module fixes on the satellites,
the SynScan hand controller will continue the
initialization process.
9.2Checking GPS Information
1. Plug the SynScan GPS module into the RJ-12 serial
port located at the bottom center of the SynScan
hand controller. Place the GPS module on a
horizontal surface.
2. Access the menu “UTILITY FUNCTION \ GPS” and
press the ENTER key.
3. The screen will now display “GPS fixing…” as the
GPS module is attempting to fix on the GPS satellites.
4. After the SynScan GPS module fixes on the
satellites, the screen will display “GPS Information:”
Use the scroll keys to browse through the following
information. Press the ESC key to exit.
• M.O.V: Local magnetic declination
• Lat: Local latitude
• Lo: Local longitude
• Date: Local date
• UT: Universal Time (Greenwich Mean Time)
• LT: Local time
• TimeZone: Local time zone
• LST: Local sidereal time
• Elevation: Local elevation
• Quality: Quality of GPS fixing
• Number of SV: Number of GPS satellites in view
• SV (fixed) Nr: Number of GPS satellites fixed on
2. If the SynScan hand controller detects the connection
of a GPS module, it will ask for the local time zone:
• Use the left and right direction keys to move the
cursor on the screen.
• Use the scroll keys to change the sign for the time
zone. Use “-” for the time zones in the Western
Hemi-sphere and “+” for the time zones in the
Eastern Hemisphere.
• Use the numeric keys to fill the time zone value in
±hh:mm format.
• Press ENTER to confirm and proceed.
3. The hand controller will then ask whether to use
Daylight Saving Time. Use the scroll keys to select
“YES” and “NO” and press the ENTER key.
21
Appendix A: Standard Time Zones of the World
22
Appendix B: SynScan Menu Tree
Accessing Menus
The SynScan hand controller’s menu is only accessible after
the initialization, or after the GoTo alignment routine is completed (if it is chosen at startup). You can use the ESC key, the
ENTER key, and the two scrolling keys to access the menu.
SETUP MODE
UTILITY FUNC.
OBJECT LIST
Date
Show Position
Named Star
Time
Show Information
Solar System
Observ. Site
Time
Version
Power Voltage
Polaris Position
Polar Align. Error
Daylight Saving
Alignment
1-Star Align. #
2-Star Align.
3-Star Align. #
Brightest Star ^
Polar Align #*
Cone Error
NP Error
Alignment Stars
Messier Catalog
#
Caldwell Catalog
Double Star
Park Scope
Variable Star
Home Position
Current Pos.
Custom Pos.
User Object
Recall Object
New Object
PAE Correction
Clear PAE Data
Deep Sky Tour
GPS
Backlash
PC Direct Mode
Tracking
Polar Scope LED
Auto Guide Speed
Elevation Limits
Flipping Mode
IC Catalog
SAO Catalog
Identify
PAE
Set Star Name
Adv. Filter
Sort By
NGC Catalog
PEC Training
^
Auxiliary Encoder
Sync. Encoder
Handset Setting
Factory Setting
#+
Camera Control
#
+
#+
#+
Astro Time-Lapse
#+
Note:
# Applicable to Equatorial mounts
^ Applicable to Altazimuth mounts
+ Applicable only to certain types of mounts and motor controllers.
* Only available after 2-star or 3-star alignment is performed.
23
a.
b.
Figure 5. a) Aligning the R.A. motion of the star with the crosshairs of a reticle eyepiece. b) Adjust the telescope in Dec.
(with the hand controller) to place the star on the R.A. crosshair.
Appendix C: Eliminating
Cone Error
A telescope exhibits cone error if the telescope tube’s optical axis is not perpendicular to the equatorial mount’s Dec.
axis. Such cone error can reduce the pointing accuracy of the
mount and the accuracy of the polar alignment. A 3-star GoTo
alignment automatically compensates for some of the “cone”
error, but pointing accuracy will be optimized by mechanically
minimizing the cone error. The following calibration procedure
should be performed before the initial use of the telescope and
periodically thereafter to ensure peak accuracy.
Testing for Cone Error
This test is performed at night using two bright stars located on
opposite sides of the meridian.
1. Confirm that the telescope is properly polar-aligned.
2. Perform a 2-star GoTo alignment. The alignment stars
should be located on the same side of the meridian
and their declination deviation should be within 10 to
30 degrees.
3. Use the SynScan hand controller to locate a few
objects on the same side of the meridian as the
alignment stars. The pointing accuracy should be
quite good.
4. Then use the SynScan hand controller to locate a few
objects on the other side of the meridian.
• If the pointing accuracy is still good, then the mount
system has small or no cone error.
• If the pointing accuracy becomes poor on the
opposite side of the meridian from the alignment
stars, and most of the error is on the R.A. axis (that
24
is, the object can be brought back to the center of
the eyepiece using the left or right direction keys),
it means that the cone error of the telescope-mount
system is quite large.
Eliminating Cone Error
1. Insert an illuminated reticle eyepiece into the focuser
(or diagonal) of the telescope. Confirm that the
telescope is properly set up and balanced, and that
the finder scope is aligned with the optical tube of the
telescope.
Note: Steps 2 to 4 are to identify R.A. and Dec. movements of stars in the reticle eyepiece. If you are already
familiar with the movements, proceed to Step 5.
2. Find a bright star and position the telescope so the
star is centered in the eyepiece field of view.
3. Look into the eyepiece. Move the telescope about the
R.A. axis using the R.A. direction buttons on the hand
controller while carefully observing the movement of
the star.
4. Keep moving the telescope about the R.A. axis back
and forth to keep the star within the eyepiece field of
view. Rotate the eyepiece in the focuser (or diagonal)
until the movement of the star becomes parallel to
one of the illuminated crosshairs (Figure 5a). This
crosshair will represent R.A. movement in the course
of this procedure, and the perpendicular crosshair will
represent Dec. movement. Tighten the set screws to
secure the eyepiece in position.
5. Point the telescope North and set the latitude scale to
your local latitude using the altitude adjustment knobs
on your mount. Alternatively, place Polaris in the polar
axis finder scope if your polar axis finder scope is
accurately aligned with the mount.
a.
b.
Figure 6. a) The counterweight shaft is horizontal and the telescope is pointed north. b) Rotate the mount 180 degrees
about the RA axis.
6. Loosen the R.A. clutch and rotate the telescope about
the R.A. axis until the counterweight shaft is parallel to
the ground, i.e., horizontal (as shown in Figure 6a).
7. Using the Dec. direction buttons on the hand
controller, adjust the telescope in Dec. so Polaris
lies on the R.A. crosshairs of the illuminated reticle
eyepiece (Figure 5b).
8. Without moving the R.A. axis, adjust the azimuth
adjustment knobs on the mount to place Polaris in
the center of the eyepiece field of view. Adjustment in
Dec. axis using the hand controller may be necessary.
9. Rotate the R.A. axis 180 degrees (Figure 6b). The
counterweight shaft should be leveled and pointed to
the other side of the mount. If Polaris can be placed
at the center of the eyepiece by rotating the Dec. axis
only, it means the cone error is small and no further
adjustment is needed; otherwise, continue with the
following steps.
10.Rotate the Dec. axis to bring Polaris as close as
possible to the center of the finder scope or the
telescope’s eyepiece.
11.Carefully nudge the telescope in a HORIZONTAL
motion while observing the movement of Polaris in the
eyepiece field of view (Figure 7). Determine which
– left or right – direction brings Polaris closer to the
Figure 7. Gently push the telescope horizontally to
determine the direction of optical axis offset.
center of the eyepiece. This will reveal the direction in
which you should adjust the telescope on the saddle
or the mounting bar to reduce the cone error.
25
12.Use a shim (or other method) on the proper side of
the saddle or mounting bar to raise the telescope
slightly. Look into the eyepiece while applying the
shim, if possible. Reduce the distance between
Polaris and the center of the eyepiece by HALF (not
all the way!).
2. Press the “2” and “5” keys simultaneously and power
on the hand controller.
3. The hand controller will display “SynScan B.I.T.” for a
short time.
4. The LCD screen will go black and then clear for a
while for the purpose of checking the LCD display.
13.Repeat Steps 8 and 9 to check whether the cone
error is now acceptable. Repeat Steps 10, 11, and 12
if necessary until Polaris remains in the center of the
eyepiece field of view, or moves slightly around the
center, when the mount is rotated about the R.A. axis.
5. If there is any problem with the RS-232C function of
the serial port (the RJ-12 outlet) or there is no LoopTest Plug connected to the serial port, the screen will
display “COM1 ERROR.” Press ENTER to continue.
6. If there is any problem with the hand controller port or
there is no Loop-Test Plug inserted in that port (the
RJ-45 outlet), the screen will display “COM2 ERROR”.
Press ENTER to continue.
Note: This adjustment can be done in the daytime by
targeting a distant, small object – at least ¼ mile away
– instead of Polaris.
Appendix D: SynScan
Self‑Diagnosis
7. If everything is fine, the test will proceed to Step 8;
Otherwise, the SynScan hand controller will show
“EEPROM ERROR” or “Flash ERROR.” Press ENTER
to continue in that case.
The SynScan hand controller contains a built-in self-diagnosis
program. To run a full test, you first need to make a “Loop-Test
Plug” by referring to Appendix E and the following instructions:
8. Check keypad and other features:
• The screen will display “Key=” in the top row. If a key
is pressed, the name of the key will be displayed.
• Short the pin-2 (TX_RS232C) and pin-5 (RX_RS232C) of
an RJ-12 plug.
• The power voltage will be displayed on the bottom
row of the screen.
Here are the diagnosis steps:
1. Insert the two “Loop-Test Plugs” into the
corresponding ports of the SynScan hand controller.
Appendix E: Schematic of the Ports
Vpp+
RX(RS232C)
COMMON
GND
TX(RS232C)
SHUTTER
6
5
4
3
2
1
Optoisolator
TX(TTL)
RX(TTL)
DROP
GND
Multi-Purpose (Serial) Port
26
Vpp+
8
7
6
5
4
3
2
1
Telescope Mount Port
Appendix F: Specifications
Supported Modes
Object Catalog
Equatorial and Alt-azimuth
Messier, NGC, IC, SAO, Caldwell,
Double Star, Variable Star,
Pointing Accuracy
Tracking Rate
PEC
Database
LCD
Named Star, Planets
Up to 5 arc-minutes RMS
Sidereal Rate, Solar Rate, Lunar Rate
SPEC or PPEC
42000+ Objects
18 Characters x 2 Lines
Keypad
Adjustable Contrast and Backlight
Rubber,
GPS
PC Connection
Adjustable backlight
SynScan GPS Modular (Optional)
RS-232C,
9600bps, No parity check, 8 data bits,
Power Supply
Power output on
serial port
1 start bit, 1 stop bit
DC 12V, 100mA
Power Supply Voltage - 0.7V
Maximum 100mA current output
27
Appendix G: Star Charts
NORTH
De
ne
CASSI
O P EIA
G
CY
C EPH
ak
irf
M
a
Capell
C
AM
E
LO
NU
S
EUS
Polaris
PAR
DAL
IS
a
PE
RS
EU
S
b
Ve
g
Dip
Little
p er
DR
O
AC
INI
Spic
SC
a
OR
U
PI
CO
BR
A
rd
ha
Alp
S
HY
CRATER
DR
A
O RION
WEST
RVU
S
PU
HYD
PP
IS
S
LI
TAN
ER
OS
SEX
OC
O
ON
RG
M
VI
Siri
us
LE
C A NI
MIN O S
R
Pr
oc
yo
n
ER
NC
CA
O
Denebola
Re
gu
lus
L
Betelgeuse
C a s t or
AM
EO
MI
NO
R
CANES
VE N ATI CI
B O Ö T ES
Arcturus
SERPENS
CAPUT
OPHIUCHUS
URS
GEM
X
OR
ar
Miz
AJ
LYN
r
COR
B O R ONA
E A LI
S
ULES
ippe
Big D
ne
Pointers
Key
sto
HER
C
U
TAUR
S
U RSA
MINOR
LY
RA
Rasalhague
EAST
COMA
S
BERENICE
RA
ANT
CEN
TAU
RU
S
LIA
VELA
PY
XIS
IL
W
O
RI
TI
N
20
00
SOUTH
SPRING
Early March
Late March
Early April
Late April
Early May
Late May
Early June
*Daylight saving time
28
1:00 AM
12:00 AM
12:00 AM*
11:00 PM*
10:00 PM*
9:00 PM*
8:00 PM (dusk)*
NORTH
PERS
LYN
X
EUS
Mir
fak
AN
CAMELOPARDALIS
LE
O
M
IN
OR
U
A
MA
J
Polaris
Pointers
LEO
er
pp
Di
g
Denebola
ar
Miz
IO
SS
per
Den
eb
DR
CA
US
RT
A
Little
Dip
HE
LA
CE
Bi
CEP
IA
U RSA
M IN OR
PE
Alp
her
atz
ACO
as
S
air
INU
S
US
S
EN
RP UT
SE AP
C
OPHIUCHUS
IC
PR
CA
UTU
M
OR
SERPENS
CAUDA
NU
S
es
Antar
IC
RO
S
WEST
Sp
ica
S
LA
SC
M
O
e
L
Alt
LE
VIRG
on
VU
A
ITT
HERCU
Rasalhague
AQ
UI
C
BOORONA
REA
LIS
yst
Ke
A
R
LY
SAG
PH
ULE
DEL
E QU
LA
Arcturus
B O ÖTES
Vega
Albireo
C Y GNUS
P E G ASUS
RIU
AQUA
CU
COMA
B E R E NIC E S
us
PISCES
eg
fP
eo
ar
qu
tS
S
NE I
CA ATIC
N
E
V
A
ED
OR
ES
RS
OM
DR
PI
SC
ea
Gr
EAST
PE
CO
PIU
M
SA
GIT
TA
LIB
RA
Tea
p
RIU
ot
S
S
PU
LU
CO
AUS RONA
TRAL
IS
IUS
SCORP
IL
W
O
RI
TI
N
20
00
TELESCOPIUM
SOUTH
SUMMER
Early June
Late June
Early July
Late July
Early August
Late August
Early September
2:00 AM*
1:00 AM*
12:00 AM*
11:00 PM*
10:00 PM*
9:00 PM*
8:00 PM (dusk)*
*Daylight saving time
29
NORTH
URSA MAJOR
Big Dip
per
M iza
rs
Pointe
r
N
LY
X
D
RA
CO
Little
Dipper
U RSA
MIN OR
CAM
ELO
S
PAR
L
DA
IS
el
Polaris
Ca
p
ague
HUS
ITTA
WEST
V U L P E CULA
L AC E RTA
US
SAG
ir
SU
EQ
AQ
UIL
UU
A
LE
DE
S
LPH
IN U S
E
Alta
M
GA
SERPEN
S
CAUDA
EIA
RO
PI
PE
TUM
IOP
AND
A RIES
TAURUS
Great Square
of Pegasus
ES
SCU
C ASS
CYG
OPHIUC
NUS
A
LYR
US
Hyades
TRIA N G U L U M
SEUS
eo
Albir
PHE
lgol
PER
A
Deneb
a
Veg
CE
Mirfak
HER
CU
LE
Keystone
la
Aldebaran
SC
lh
Rosa
GE
MI
NI
N
IDA
ER
CE
TU
US
S
US
IU S
AQUARIUS
O
IC
PR
CA
haut
Fomal
SCULP
FO
RN
A
X
TOR
USTR
PISCIS A
PHO
E NIX
INUS
S
SC
RO
MIC
IL
W
OP
IU
O
RI
TI
RN
SA
GI
TT
AR
ORION
Betelgeu
se
EAST
Alpheratz
DA
M
N
20
00
GRU
SOUTH
AUTUMN
Early September
Late September
Early October
Late October
Early November
Late November
Early December
*Daylight saving time
30
2:00 AM*
1:00 AM*
12:00 AM*
11:00 PM*
9:00 PM
8:00 PM
7:00 PM
NORTH
CYGN
U
S
HER
CE P
CU
LE
S
HEUS
BO
CO
DRA
Little
s
at
r
Bi
g
Di
pp
er
h
Alp
er
za
PIS CES
A RIES
T RIA N G
Alg
n
I
OR
Hya
US
AN
XT
u se
Betelge
CET
C IN
M
S
ION
Mira
n
yo
oc
I
Pr
AN O
SE
S
TL
PY
IA
el
Rig
CER
OS
I
ER
Sirius
LEP
C A NIS
MAJOR
XIS
AX
NO
US
RN
RA
MO
ar
d
FO
H
AN
ph
US
Al
YD
DA
N
TER
CRA
s
ulu
M IN
TA
UR
US
Reg
GE
d
des
eb
a
ra
x
ER
LEO
CANC
Pollu
r
WEST
Casto
MIN O R
PERSEUS
NX
LY
LEO
ULU
ol
M
ak
rf
Mi
Gr
LOP
ARDALIS
la
pel
Ca
ea
tS
q
CA
ME
Mi
JO
R
Denebola
VIRGO
EAST
Al
R
ua
r
eo
IO
z
su
SS
ES
er
Dipp
U RSA
MINOR
Polaris
P EI
A
ÖT
A
C
BER OMA
ENIC
ES
UR
SA
M
fP
eg
a
CA
D
AN
PE
M
RO
GA
SU
A
ED
S
LA
C
ER
TA
C
VE A N
NA ES
TIC
I
ers
int
Po
Adhara
VEL
A
COLU
PUPPIS
MBA
CA
EL
UM
IL
W
O
RI
TI
N
20
00
SOUTH
WINTER
Early December
Late December
Early January
Late January
Early February
Late February
Early March
2:00 AM
1:00 AM
12:00 AM
11:00 PM
10:00 PM
9:00 PM
8:00 PM
31
One-Year Limited Warranty
This Orion product is warranted against defects in materials or workmanship for a period of one year
from the date of purchase. This warranty is for the benefit of the original retail purchaser only. During this
warranty period Orion Telescopes & Binoculars will repair or replace, at Orion’s option, any warranted
instrument that proves to be defective, provided it is returned postage paid. Proof of purchase (such as
a copy of the original receipt) is required. This warranty is only valid in the country of purchase.
This warranty does not apply if, in Orion’s judgment, the instrument has been abused, mishandled, or
modified, nor does it apply to normal wear and tear. This warranty gives you specific legal rights. It is not
intended to remove or restrict your other legal rights under applicable local consumer law; your state or
national statutory consumer rights governing the sale of consumer goods remain fully applicable.
For further warranty information, please visit www.OrionTelescopes.com/warranty.
Orion Telescopes & Binoculars
Corporate Offices: 89 Hangar Way, Watsonville CA 95076 - USA
Customer Support: www.OrionTelescopes.com/contactus
Copyright © 2013-2014 Orion Telescopes & Binoculars
All Rights Reserved. No part of this product instruction or any of its contents may be reproduced, copied, modified or adapted, without the prior
written consent of Orion Telescopes & Binoculars.
32
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising