iOptron CEM120 Center-Balanced Equatorial Mount

iOptron® CEM120 Center-Balanced Equatorial Mount
Instruction Manual
Product #7300 and#7301
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Read the Instruction BEFORE setting up and using the mount! Worm/gear system damage due
to improperly use will not be covered by warranty.
If you have any questions please contact us at support@ioptron.com
WARNING!
NEVER USE A TELESCOPE TO LOOK AT THE SUN WITHOUT A PROPER FILTER!
Looking at or near the Sun will cause instant and irreversible damage to your eye.
Children should always have adult supervision while using a telescope.
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Table of Contents
Table of Contents .................................................................................................................................................... 3 1. CEM120 Introduction ......................................................................................................................................... 6 2. CEM120 Terms ................................................................................................................................................... 7 2.1. Parts List ...................................................................................................................................................... 7 2.2. Identification of Parts ................................................................................................................................... 8 2.3. CEM120 Mount Basic Cable Connection.................................................................................................... 9 2.4. CEM120 Cable Management ....................................................................................................................... 9 2.5. Go2Nova® 8407+ Hand Controller............................................................................................................ 12 2.5.1. Key Description .................................................................................................................................. 12 2.5.2. The LCD Screen ................................................................................................................................. 13 2.6. Check the Battery ....................................................................................................................................... 14 3. CEM120 Mount Assembly ............................................................................................................................... 15 4. Getting Started .................................................................................................................................................. 22 4.1. Setting the Mount and Performing Polar Alignment ................................................................................. 22 4.2. Manual Operation of the Mount ................................................................................................................ 22 4.3. Initial Star Alignment ................................................................................................................................ 22 4.4. GOTO the Moon and Other Objects .......................................................................................................... 22 4.5. Star Identification Function ....................................................................................................................... 23 4.6. Power-Down Memorization....................................................................................................................... 23 4.7. Turning Off the Mount............................................................................................................................... 23 5. Complete Functions of Go2Nova® 8407+ Hand Controller ............................................................................. 24 5.1. Select and Slew .......................................................................................................................................... 24 5.1.1. Solar System ....................................................................................................................................... 24 5.1.2. Deep Sky Objects................................................................................................................................ 24 5.1.3. Stars..................................................................................................................................................... 24 5.1.4. Comets ................................................................................................................................................ 24 5.1.5. Asteroids ............................................................................................................................................. 24 5.1.6. Constellations...................................................................................................................................... 24 5.1.7. Custom Objects ................................................................................................................................... 24 5.1.8. Customer R.A. and DEC..................................................................................................................... 25 5.2. Sync to Target ............................................................................................................................................ 25 5.3. Alignment .................................................................................................................................................. 25 5.3.1. Position of Polaris/SigmaOct .............................................................................................................. 25 5.3.2. One Star Alignment ............................................................................................................................ 25 5.3.3. Two Star Alignment ............................................................................................................................ 25 5.3.4. Three Star Alignment .......................................................................................................................... 26 5.3.5. Solar System Align ............................................................................................................................. 26 5.3.6. Polar Iterate Align ............................................................................................................................... 26 5.3.7. View Model Error ............................................................................................................................... 26 5.3.8. Clear Alignment Data ......................................................................................................................... 26 5.4. Settings....................................................................................................................................................... 26 5.4.1. Set Time and Site ................................................................................................................................ 26 5.4.2. Beep Settings ...................................................................................................................................... 27 5.4.3. Display Settings .................................................................................................................................. 27 5.4.4. Set Guiding Rate ................................................................................................................................. 27 5.4.5. Set Tracking Rate................................................................................................................................ 28 5.4.6. Set Parking Position ............................................................................................................................ 28 3
5.4.7. Meridian Treatment ............................................................................................................................ 28 5.4.8. Set Altitude Limit ............................................................................................................................... 28 5.4.9. Enable CW Up Position ...................................................................................................................... 28 5.4.10. HC Heating Switch ........................................................................................................................... 29 5.4.11. Set RA Guiding ................................................................................................................................. 29 5.4.12. Network Options ............................................................................................................................... 29 5.4.13. Power LED Switch ........................................................................................................................... 29 5.4.14. Reset All Settings.............................................................................................................................. 29 5.4.15. Language ........................................................................................................................................... 29 5.5. Electric Focuser ......................................................................................................................................... 30 5.6. PEC Option ................................................................................................................................................ 30 5.6.1. PEC Playback...................................................................................................................................... 30 5.6.2. Record PEC......................................................................................................................................... 30 5.6.3. PEC Data Integrity .............................................................................................................................. 30 5.7. Park Telescope ........................................................................................................................................... 30 5.8. Edit User Objects ....................................................................................................................................... 31 5.8.1. Enter a New Comet ............................................................................................................................. 31 5.8.2. Enter Other Objects or Observation List ............................................................................................ 31 5.9. Firmware Information ................................................................................................................................ 32 5.10. Zero Position ............................................................................................................................................ 32 5.10.1. Goto Zero Position ............................................................................................................................ 32 5.10.2. Set Zero Position ............................................................................................................................... 32 5.10.3. Search Zero Pos. ............................................................................................................................... 32 6. Maintenance and Servicing ............................................................................................................................... 33 6.1. Maintenance ............................................................................................................................................... 33 6.2. iOptron Customer Service.......................................................................................................................... 33 6.3. Product End of Life Disposal Instructions ................................................................................................. 33 6.4. Battery Replacement and Disposal Instructions ........................................................................................ 33 Appendix A. Technical Specifications ................................................................................................................. 34 Appendix B. Go2Nova® 8407+ HC MENU STRUCTURE................................................................................. 35 Appendix C. Firmware Upgrade ........................................................................................................................... 38 Appendix D. Computer Control a CEM120 Mount.............................................................................................. 39 Appendix E. Go2Nova®Star List .......................................................................................................................... 40 IOPTRON TWO YEAR TELESCOPE, MOUNT, AND CONTROLLER WARRANTY ................................. 46 Ver. 0.9 2017.12
iOptron reserves the rights to revise this instruction without notice. Actual color/contents/design/function may differ from those described in this
instruction manual.
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Instruction for CEM120 Gear Switch and Axle Locking Knob
Both RA and DEC have the same Gear Switch and Axle Locking Knob, the operations are the same.
Gear Switch
Axle Locking Knob
As an example, here are the positions for the Gear Switch and Axle Locking Knob for RA axis:
A: When transferring or installing the mount, lock the Axle Locking Knob and disengage the Gear
Switch
(they are parallel to each other). So the RA won’t swing and there is no force applied onto
the worm/ring gear.
B: During mount balancing process, release the Axle Locking Knob and leave the Gear Switch at
disengaged position
direction.
(they are perpendicular to each other). Now the mount will swing freely in RA
C: During normal operation of the mount, i.e., GOTO and tracking, turn the Gear Switch to locking
position
to engage the worm/ring gear while leave the Axle Locking Knob released (they are parallel
to each other again).
A. During transferring and
installing…
B. During balancing…
C. During operating…
ONLY set the Gear Switch at locking position to engage the worm/ring gear during goto, slew or
tracking.
ALWAYS lock the Axle Locking Knob during transferring and installing.
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1. CEM120 Introduction
Welcome to a new type of equatorial mount – the iOptron® Center-Balanced Equatorial Mount,
or CEM! It offers the benefits of our revolutionary “center balance” design: stability, accuracy, and
smooth mechanical operation, while capable of carrying a payload up to 115 lbs (52 kg). The “center
balance” design’s natural stability is due to its focusing the mount along with payloads weight directly
over the center of the pier or tripod.
The CEM120's performance is demonstrated by its low periodic tracking error of ±3.5 arc
seconds (<0.15 arcsec RMS for CEM120EC). Along with the stability aspect, the CEM120 features an
advanced cable management system consisting of more ports in more locations preventing tangle ups
and reducing the chance of fractured cables. It also adds some new features to the CEM family like WiFi and LAN for remote operation and easy to use, reliable clutches on both axes.
The CEM12 mount is equipped with the most advanced GOTONOVA® GOTO technology,
making it one of the most powerful and accurate GOTO mounts available. TheGo2Nova® 8407+ hand
controller has a database of over 212,000 objects making it easy to locate even the faintest celestial
objects.
Features:
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A new design, center-balanced equatorial mount (CEM) for maximum payload with natural
stability
Observatory astrophotography mount ideal for both visual and Astro-photographers
Payload of 115 lbs (52 kg) with the mount weight of 57 lbs (26 kg)
Easy to use and reliable gear clutches
Precision altitude and azimuth adjustment.
Precision stepper motor with 0.07 arcsec accuracy for precise GOTO and accurate tracking
Polar alignment routine for those who can't see the Pole Star
Go2Nova® 8407 V2 controller with Advanced GOTONOVA® GOTO Technology with built in
heater
High precision tracking with low periodic error: PE<±3.5 arcsec for #7300, or PE <0.15 arcsec
RMS for #7310
Permanent periodic error correction (PPEC) (#7300) or Real-time periodic error correction
(RPEC) (#7301)
Built-in 32-channel Global Positioning System (GPS)
Built-in WiFi and LAN for remote operation
Integrated ST-4 autoguiding port
AutoZeroTM technology for mount remote operation
Power-down memorization of GOTO and tracking position
Advanced cable management system with more choices
Spring loaded, individual adjustable Losmandy saddle
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2. CEM120 Terms
2.1. Parts List1
SHIPPING CONTENTS
Your new CEM120 mount comes in two shipping boxes. One box contains either a CEM120
(#7300) or CEM120EC (#7301) mount head, hand controller, and accessories. The other box contains
a 22lb (10kg) counterweight and counterweight shaft. The contents are:
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1X iOptron® CEM120 telescope mount (#7300, with silver adjustment knobs) or iOptron®
CEM120EC mount (#7301, high precision model with red adjustment knobs)
1X Go2Nova® 8407 V2 Hand Controller
1X 22lb (10 kg) counterweight
1X Stainless steel counterweight shaft
1X 12V/5A AC/DC adapter (100V-240V)
1X Hand Controller Cable (6P6C RJ11 to RJ11, straight wired)
1X Serial cable (RS232 to RJ9)
4X Base mounting screws
1X GPS external antenna
1X Wi-Fi external antenna
OPTIONAL PARTS
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Electronic polar scope adapter (#3337-120)
Pier top mounting plate
USB to RS232 Converter with FTDI chipset (#8435)
ONLINE RESOURCES (click on the “Support” menu at www.iOptron.com)
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Quick Start Guide
Instructional manual
Tips for set up
Hand controller and mount firmware upgrades (check online for latest version)
iOptron ASCOM driver
Reviews and feedback from other customers
Accessories
US market only. Actual contents may vary.
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2.2. Identification of Parts
Dovetail Saddle RA Axis
Dovetail Locking Knob DEC Gear Switch CW Shaft Mounting House
DEC Axle Locking Knob Counterweight
AZI Adjustment Knob Base Mounting Screw CW Shaft Mount Base ALT Adjustment Knob
CW Shaft Safety Lock RA Axle Locking Knob Cable management Output Panel RA Gear Switch Cable management Input Panel ALT Locking Clamp Mount Basic Ports Figure 1.CEM120 mount assembly
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2.3. CEM120 Mount Basic Cable Connection
The basic cable connection ports of a CEM120 mount are all located on the mount base, as
shown in Figure 2.
Figure 2. Ports on a CEM120 mount base
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DC 12V 5A: DC power socket to power the mount (2.5mmX5.5mm, 5525)
ON/OFF: Power Switch
HBX (Hand Box): For connecting to an 8407 Hand Controller
RS232: Serial port for mount computer control and firmware upgrade
USB: USB port for mount computer control
LAN: network connection for remote control
WiFi: Mini coaxial cable connector for WiFi antenna
GPS: Mini coaxial cable connector for GPS external antenna
2.4. CEM120 Cable Management
The CEM120 mount has a pre-wired Cable Management System that allows the user to connect
their accessories and imaging equipment without cables tangling or snagging when the mount is
slewing or tracking. The Cable Management Outputs are located at the back of the dovetail saddle, as
shown below.
Figure 3. Connects at the end f the dovetail saddle
Figure 4. GUIDE port wiring
At the end of the dovetail saddle, there are
 USB 2.0 x 4: 4 USB 2.0 ports with standard type A connectors for connecting accessories
(un powered). They were connected to the USB2.0 input on Input Panel.
 GUIDE: port for autoguiding with ST-4 cable. The wiring is shown in Figure 4.
 AUX (OUT): A DIN-422 port for high power or other connection purpose. It is connected to
the AUX (IN) port on Input Panel.
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Figure 5. AUX port DIN-422 socket
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iPORT: for iOptron compatible accessories, such as electrical focuser.
USB 3.0: Powered USB 3.0 port. It is connected to the USB3.0 input on the Input Panel.
5521 5V1A socket: a 2.1mmX5.5mm 5V DC power output for accessories. Maximum 1A,
center positive. This is provided by mount DC 12V power.
Figure 6. Power output sockets
On the side of the dovetail saddle, there are 4 power output sockets:
 5521 12V1A socket X2: There are two 12V1A DC output sockets on the right end side of the
dovetail saddle, with 2.1mmX5.5mm, center positive sockets. They are provided by mount
DC 12V power.
 On the left end side of the dovetail saddle, there are one 5525 (2.5mmx5.5mm) and one
5521 (2.1mmX5.5mm) DC output sockets for your accessories. The maximum specified
current output is 5A. They are connected to the DC IN 10 port on the Input Panel. The
voltage is determined by the input voltage, such as V, 12V or 24V.
Figure 7. Cable Management System Input Panel
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The ports on the Cable Management Panel are connected to the Input Panel located at the end
of the mount RA axis, as shown in Figure 7:
 1X DC IN 10A power input (2.5mmX5.5mm, 10A max.)
 1X USB 2.0 port with a standard type B connector
 1X USB 3.0 port
 1X AUX IN port (for data or extra power input)
 iPolarScope port for electronic polar scope connection
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2.5. Go2Nova® 8407+ Hand Controller
DEC+
R.A.+
R.A.DEC-
HBX
Port
Serial
Port
Figure 8. Go2Nova® 8407+ hand controller
The Go2Nova® 8407+ hand controller (HC) shown in Figure 8 is the standard controller used on
the CEM120 mount. It has an integrated heater that ensures the LCD display will work at the
temperature as low as -20ºC(-4ºF). It has a large LCD screen, function, direction, and number keys on
the front; a red LED reading light on the back; and a HBX (6-pin) and a serial port (4-pin) at the bottom.
2.5.1. Key Description
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MENU Key: Press “MENU” to enter the Main Menu.
BACK Key: Move back to the previous screen, or end/cancel current operation, such as
slewing.
ENTER Key: Confirm an input, go to the next menu, select a choice, or slew the telescope
to a selected object.
Arrow (▲▼◄►) Keys: The arrow keys are used to control the movement of DEC and R.A.
axes. Press and hold ▲(DEC+),▼(DEC-) buttons to move a telescope along the DEC
direction, ◄(R.A.+), ►(R.A.-) to move a telescope along the R.A. direction. They are also
used to browse the menu or move the cursor while in the menu. Press and holding an arrow
key for a fast scrolling.
Number Keys: Input numerical values. Also used to adjust speeds (1: 1X; 2: 2X; 3: 8X; 4:
16X; 5: 64X; 6: 128X; 7: 256X; 8: 512X; 9: MAX)
Light Key(☼): Turns on/off the red LED reading light on the back of the controller.
Help (?) Key: Identify and display bright stars or objects that the telescope is pointing to.
STOP/0 Key: Stop the mount during GOTO. Also toggling between starting and stopping
tracking.
HBX (Handbox) port: connect the HC to a mount using a 6P6C RJ11 cable.
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Serial port: connect the HC to a computer via a RS232 to 4P4C RJ9 cable. The pin-out of
the serial port is shown in Figure 9.
Figure 9. Serial port pin-out on an 8407+ hand controller
2.5.2. The LCD Screen
The 8407+ HC has a large 8-line, 21-character per line, LCD screen which displays information
on the status of the mount as shown in Figure 10.The user interface is simple and easy to operate.
Figure 10. 8407+ HC LCD Information Screen
1. Target Name/Mount Position: displays the name of the target that telescope is currently pointed to
or the current mount position.
 Zero Position: The reference position for GOTO. The mount can move to Zero Position
using “Goto Zero Position” or “Search Zero Position” command;
 User Position: The mount is pointed to a user defined position, which could be a particular
celestial object or simply a position determined by pressing an arrow key;
 An object name, such as “Mercury” or “Andromeda Galaxy”: Name of the star or celestial
object that the mount is currently slewing to or tracking.
2. Target R.A.: Right Ascension (R.A.) of the target object.
3. Target Declination: Declination (DEC) of the target object.
4. Right Ascension: Current R.A. of the telescope.
5. Declination: Current DEC of the telescope.
6. Altitude: Altitude of the telescope (degrees vertical from the local horizon - zenith is 90º).
7. Azimuth: Azimuth of the telescope (north is 0º, east is 90º, south is 180º, and west is 270º).
8. Local Date and Time: displays the local time in a format of YY-MM-DD HH:MM:SS.
9. Mount Status: Displays the current operational status of the mount.
 Stop: mount is not moving;
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Slew: mount is moving with an arrow key is pressed or a GOTO command, such as “Select
and Slew” or “Goto Zero Position”;
Tracking: mount is at a tracking status.
10. GPS status: When the power is turned on, the initial GPS status will be “GPS ON”, which means
that the mount is connected to its GPS receiver and is seeking a satellite signal. When the GPS
receiver finds the satellites and receives the GPS signal the status will change to “GPS OK”.
11. PEC status: Display of “PEC” here Indicates the Periodic Error Correction playback is turned on.
Default is off.
12. Tracking speed: Displays the current tracking rate of the mount.
 SDRL: mount is tracking at sidereal speed;
 Solar: mount is tracking at solar speed;
 Lunar: mount is tracking at lunar speed;
 King: mount is tracking at king speed;
 CSTM: mount is tracking at a custom, user-defined speed.
13. Slew speed: The mount has 9 slew speeds: 1X, 2X, 8X, 16X, 64X, 128X, 256X, 512X,
MAX(4°/sec).
14. Operation Mode: EQ indicates that the mount is operating in an equatorial mode.
2.6. Check the Battery
The hand controller has a real time clock (RTC) which should display the correct time every time
the mount is turned on. If the time is incorrect, please check the battery inside the hand
controller and replace it if needed. The battery is a 3V, CR1220 button battery.
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3. CEM120 Mount Assembly
STEP 1. Attach the Mount
Make sure that the RA axle is at the locking position (please refer to the charts on page 5).
Remove the mount from the package. Put it onto a pier/tripod top and secure it with four included Base
Mounting Screws.
(a)
(b)
Figure 11. (a) Attach the mount, and (b) mount base dimension
Because of the total weight of the mount, counterweight and payload, we recommend use your
own pier for the mount. The base dimension is shown in
STEP 2. Install the Counterweight (CW) Shaft
Hold the mount head with one hand. Pull the RA Axle Locking Knob outward to disengage the
lock. Slowly rotate the mount RA 90 degree to level position. Release the RA Axle Locking Knob to lock
the RA axis again.
Figure 12. Install CW shaft
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Remove the CW shaft from the package and threaded it onto the CW shaft mounting house. DO
NOT release the RA Axle Lock before the CW shaft is fully threaded in. The CW shaft is designed to
balance the mount head weight.
DO NOT rock the counterweight shaft rigorously. It may damage the worm system.
STEP 3. Adjust Altitude
This step requires you to know the latitude of your current location. This can be found from your
8407+ hand controller after the embedded GPS receives the signal from the satellites. It can also be
easily found on the Internet, using a GPS satellite-navigation system, or a GPS capable cell phone.
You will have to change this latitude setting every time you significantly change your night sky viewing
location. Note that this setting directly affects the mount’s GOTO accuracy.
Altitude Adjustment knob Altitude locking clamp Figure 13. Setting the latitude Figure 14. Latitude Adjustment Knob
Slightly loosen the Altitude Locking Clamps about a quarter (1/4) turn with a 5mm Allen wrench,
on both side of the mount. Turn the Altitude Adjustment Knob until the arrow points to your current
latitude on the Latitude Scale, as shown in Figure 13. Tighten the Altitude Locking Clamps when done.
The altitude adjustment employs worm gear system and can be adjusted precisely when turn in
one direction. The fine adjustment is 0.5 arcmin.
The mount latitude adjustment range is from 0° to 68°. For those low latitude places between
0° to 10°, a special CW shaft mounting block is needed.
STEP 4. Install the Counterweight(s) and Telescope
Before installing the Counterweight(s), make sure that mount is at Zero Position, i.e., CW shaft
is pointing to ground. Both R.A. and DEC Axle Locking Knobs are at the locking position (refer to
Illustration A on page 5).
Remove the CW Safety Cap at the end of CW Shaft. Guide the CW over the shaft. Tighten the
CW Locking Screw to hold the CW in place. Place the Safety Cap back onto the shaft.
WARNING: The mount should always be kept in the zero position while it is being loaded
with CWs and payload.
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Figure 15. Loading counterweight
You may need more CW for heavier payload, or smaller size CW for lighter scope.
The CEM120 has a Losmandy-D dovetail saddle plate, as shown in Figure 16. Release the
dovetal saddle locking knobs and slide the telescope dovatal plate into the saddle. Tighten the saddle
locking knob.
Figure 16. CEM120 dovetail saddle plate
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STEP 5. Balance the Payload
After attaching the scope and accessories, the mount head assembly must be balanced in both
R.A. and DEC axes to ensure minimum stresses on the mount driving mechanism.
CAUTION: The telescope may swing freely when the R.A. or DEC during the balancing process.
Always hold on to the mount and/or telescope assembly before releasing the Axle Locking
Knob and/or Gear Switches to prevent it from swinging, which can cause personal injury and/or
equipment damage.
With the corresponding Gear Switch disengaged, balance in DEC axis by moving the scope with
accessories back and forth in the mount saddle. Balance the assembly in R.A. axis by moving CW
along its shaft.
Only balance one axis at a time and start with the DEC axis first. Double check the mount to
make sure both the RA and DEC axes are balanced.
Return the mount to the Zero Position after balancing; i.e., the CW shaft points to ground, and
the telescope tip is at its highest position.
STEP 6. Connect Cables
Plug in a 12V DC power supply to the DC12V POWER socket; connect the Go2Nova® 8407
Hand Controller to the HBX port on the mount side panel; and install Wi-Fi antenna (right angle one)
and GPS antenna, as shown in .
STEP 7. Setup Hand Controller
The CEM120 mount is equipped with a GPS receiver which will receive the UTC time, longitude
and latitude information for your current location from satellites after a link is established. However,
there are still some parameters which need to be entered to reflect your location, such as time zone
information and whether daylight saving time is currently in effect. This information will be stored in the
mount until they need be updated.
The GPS with an external antenna should make the mount to connect the satellites in a few
minutes. If the GPS module has difficulty receiving the satellite signal, you may manually enter the
information.
To set up the controller, press MENU =>“Settings”:
Select and Slew
Sync. to Target
Alignment
Settings
Electric Focuser
PEC Options
Park Telescope
Edit User Objects
Press ENTER and select “Set Time & Site”
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Set Time and Site
Beep Settings
Display Settings
Set Guiding Rates
Set Tracking Rate
Set Parking Position
Meridian Treatment
Set Altitude Limit
Press ENTER. A time and site information screen will be displayed:
Daylight Saving Time
UTC -300 Minute(s)
2014-03-09 10:19:18
Y
Longitude:W071°08’50”
Latitude: N42°30’32”
Northern Hemisphere
Set Local Time
The time will be updated automatically when the GPS receiver has established its link with the
GPS satellites. In the event that the GPS module is unable to establish a link to the satellites, local time
can be entered manually. Use the ◄ or ► key to move the cursor _ and use the number keys to
change the numbers. Use the ▲ or ▼ button to toggle between “Y” and “N” for Daylight Saving Time,
or “+” and “-“ for UTC (Coordinated Universal Time) setting. Hold the arrow key to fast forward or
rewind the cursor.
In order to make the Hand Controller reflect your correct local time, time zone information has
to be entered. Press the ◄ or ► key, move the cursor to the third line “UTC -300 Minute(s)” to set the
time zone information (add or subtract 60 minutes per time zone). For example:
 Boston is “UTC -300 minutes”
 Los Angeles is “UTC -480 minutes”
 Rome is “UTC +60 minutes”
 Beijing is “UTC +480 minutes”
 Sydney is “UTC +600 minutes”
All the time zones in North America are “UTC –“, as shown in the following table, so ensure the
display shows “UTC -” instead of “UTC +” if in North or South America.
Time Zone
Hour behind UT
Enter UTC
Hawaii
Alaska
Pacific
Mountain
Central
Eastern
-10
-9
-8
-7
-6
-5
-600
-540
-480
-420
-360
-300
To adjust minutes, move the cursor to each digit and use the number keys to input the number
directly. Use ▲ or ▼ key to toggle between “+” and “-”. When the time one information entered is
correct, press ENTER and go back to the previous screen. Note that fractional time zones can be
entered.
Do not manually add or subtract an hour from displayed time to reflect Daylight Saving Time
(DST). Only select “Y” after DST begins.
For other parts of the world you can find your “time zone” information from internet.
Set Observation Site Coordinates
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The third and fourth lines display the longitude and latitude coordinates respectively. The
longitude and latitude coordinates will be automatically updated when the GPS picks up a satellite
signal. “W/E” means Western/Eastern Hemisphere; “N/S” means Northern/Southern Hemisphere; “d”
means degree; “m” means minute; and “s” means second.
If, for any reason, your GPS does not pick up the satellite signal, you can manually enter your
longitude and latitude coordinates. Press the ◄ or ► key to move the cursor, use the ▲ or ▼ key to
toggle between “W” and “E”, and “N” and “S”, and use the number keys to change the numbers. It is
always a good idea to do your homework and get longitude and latitude coordinates before traveling to
a new observation site.
The site coordinates information can be found from your smart phone, GPS receiver or via the
internet. Site information in decimal format can be converted into d:m:s format by multiplying the
decimal numbers by 60. For example, N47.53 can be changed to N47º31'48”: 47.53º = 47º +0.53º,
0.53º=0.53x60'=31.8', 0.8'=0.8x60"=48". Therefore, 47.53º=47º31'48" or 47d31m48s.
Select N/S Hemisphere
The Northern/Southern Hemisphere will be selected automatically when the latitude is set,
unless the latitude is near the equator. When the latitude is between -10° ~ +10°, set it to Northern
Hemisphere if the polar axis is pointing to North, or Southern Hemisphere if the polar axis is pointing to
South.
STEP 8. Polar Alignment
In order for an equatorial mount to track properly, it has to be accurately polar aligned. A
CEM120 mount does not come with an optical polar scope. There are a few ways to perform the polar
alignment.
Polar Alignment Software
There are quite a few alignment software available or polar alignment, such as TPoint with The
Sky software, PemPro, and Alignmaster
Optional Electronic Polar Scope
A CEM120 has a built-in USB connection (iPolarScope port) for an electronic polar scope. With
a proper adapter, an electronic polar scope, such as PoleMaster can be installed onto the mount and
ready to use.
Figure 17. CEM120 with an installed electronic polar scope
BrightStar Polar Alignment/Polar Iterate Align
BrightStar Polar Alignment allows you to polar align the mount even if you cannot view the
Celestial Pole.
20
(1) Level the CEM120 mount and set it at Zero Position. Make sure the telescope is parallel to
the pole axis (R.A. axis) of the mount. If a finder scope is used, adjust it to be parallel to the
telescope optical axis. Turn the mount power on.
(2) Pressing MENU=>“Alignment”=>“Polar Iterate Align”. The HC will display the azimuth and
altitude position of several bright stars near meridian. Select one that is visible with high
altitude as Alignment Star A. Follow the HC instruction to move the Star A to the center of
the eyepiece with the combination of Latitude Adjustment Knob and “◄” or “►” button.
Press ENTER to confirm. Next, select a bright star that is close to the horizon as the
Alignment Star B. Center it using the Azimuth Adjustment Knob and “◄” or “►” button (The
“▲” and “▼” buttons are not used here). Press ENTER to confirm.
(3) The telescope will now slew back to Star A to repeat above steps. The iteration can be
stopped when it is determined that the alignment error is at the minimum. Press BACK
button to exit alignment procedure.
NOTE: The movement of the alignment star in your eyepiece may not be perpendicular but
crossed, depends on its location in the sky.
STEP 9. Return Mount to Zero Position
After polar alignment and balancing OTA, return the mount to the Zero Position. The Zero
Position is achieved when the CW shaft is pointing towards the ground, with the OTA/dovetail at its
highest position, its axis parallel to the polar axis, and the OTA pointing to the Celestial Pole.
Press MENU => “Zero Position” => “Goto Zero Position”. When the mount stopped, loosen
the DEC and R.A. Gear Switches in turn to adjust the mount to the Zero Position. Engage the clutches
after each adjustment. Or press MENU => “Zero Position” => “Search Zero Position” to go to the
Zero Position.
Please set the zero position if it is the first time using the mount, or the firmware just being
updated. You can always check the Zero Position by using MENU=>”Zero Position”=>”Goto Zero
Position” before each session.
Figure 18. Zero Position
21
4. Getting Started
In order to experience the full GOTO capability of GOTONOVA® technology it is very important
to set up the mount correctly before observation.
4.1. Setting the Mount and Performing Polar Alignment
Assemble your CEM120 mount according to Section Error! Reference source not found..
Make sure the mount is leveled. Mount an OTA and accessories, and carefully balance the mount on
both R.A. and DEC axes. Turn the mount power switch on. When the GPS receiver is connected to
satellites, the hand controller LCD will display GPS OK and the mount will have the correct time and
site information (this can also be entered manually as previously described). Polar align the mount.
Always check if the mount is at the Zero Position when the mount is powered on, i.e. with the
counterweight shaft pointing to ground, OTA at the highest position with its axis parallel to the polar axis
and the telescope pointing to the Celestial Pole. Press MENU => “Zero Position” => “Goto Zero
Position” to check it. If the mount is not at the Zero Position, press MENU => “Zero Position” => “Set
Zero Position.” Release the Gear Switch to manually return the mount to Zero Position, or use the
hand controller to slew the mount to Zero Position. Press ENTER to confirm the zero position.
4.2. Manual Operation of the Mount
The mount can now be used to observe astronomical objects using the HC. Use the arrow keys
(►, ◄, ▼, and ▲) to point the telescope to the desired part of the sky. Use the number keys to
change the slewing speed. Press the STOP/0 button to start tracking.
4.3. Initial Star Alignment
Perform a simple one star alignment/synchronization after set up the hand controller to correct
any pointing discrepancy of the Zero Position and to improve the GOTO accuracy.
To perform “One Star Align,” press MENU=>“Alignment”=>“One Star Align”=>ENTER. The
screen will display a list of bright objects for you to select from. Select an object using ▲ or ▼ key.
Then press ENTER. After the mount slews to the target, use the arrow keys to center it in your
eyepiece. Then press ENTER. (More align details in 5.4)
An alternate way is to perform “Sync to Target.” Press MENU=>“Select and Slew”=>ENTER.
Browse over the catalogs and select an object. Press ENTER. After the mount slews to the star, press
MENU=>“Sync. To Target”, follow the on-screen instruction to center the star and press ENTER. You
may need to use the number keys to change the slewing speed to make the centering procedure
easier.
4.4. GOTO the Moon and Other Objects
After performing these set-ups the mount is ready to GOTO and track objects. One of the most
common objects is the Moon.
To slew to the Moon press MENU=>“Select and Slew”=>“Solar System”=>Moon=>ENTER.
The telescope will automatically slew to the Moon and lock on it. It will automatically begin to track once
it locks on. If the Moon is not centered in your eyepiece, use the arrow keys to center the Moon. You
may use “Sync to Target” to improve the tracking.
You may also select other bright celestial objects to start with, such as Jupiter or Saturn.
22
4.5. Star Identification Function
The 8407+ hand controller has a star identification function. After setting the correct local time
and location and completing polar alignment, slew the telescope to a bright star manually or using the
GOTO function. Press the Help(?) key to identify the star that the telescope is pointing to, as well as
nearby bright stars if there is any.
4.6. Power-Down Memorization
The CEM120 mount can memorize its R.A. and DEC positions if the mount loses its power by
accident, even during high speed slewing. After the power is back, just do a Select and Slew to the
same star when the power is lost. The mount will continue to track the star.
4.7. Turning Off the Mount
When you have finished your observation, simply turn the mount power off and disassemble the
mount and tripod.
If the mount is set up on a pier or inside an observatory, it is recommended that you return the
mount to the Zero Position or park the telescope. This will ensure that there is no need for you to
perform the initial setup again.
23
5. Complete Functions of Go2Nova® 8407+ Hand Controller
5.1. Select and Slew
Press MENU => “Select and Slew.” Select an object that you would like to observe and press
the ENTER key.
The Go2Nova® 8407+ hand controller has a database of over 212,000 objects. Use the ► or ◄
buttons to move the cursor. Use the number buttons to enter a number, or the ▼ or ▲ buttons to
change a number. Hold a button to fast scroll through the list. The “ ”symbol indicates that the object
is above the horizon, and the “ ” symbol means it is below the horizon. In some catalogs the stars
below the horizon will not be displayed on the hand controller.
5.1.1. Solar System
There are 9 objects in the Solar System catalog.
5.1.2. Deep Sky Objects
This menu includes objects outside our Solar System such as galaxies, star clusters, quasars,
and nebulae.

Named Objects: consists of 92 popular deep sky objects with their common names. A list of
named deep sky objects is included in Appendix E.

Messier Catalog: consists of all 110 Messier objects.

NGC Catalog: consists of 7,840 objects.

IC Catalog: consists of 5,386 objects.

PGC Catalog: consists of 73,197 objects..

Caldwell Catalog: consists of 109 objects.

Abell Catalog: consists of 4,076 objects.

Herschel Catalog: consists of 400 objects.
5.1.3. Stars

Named Stars: consists of 259 stars with their common names. They are listed alphabetically;
a list is included in Appendix E.

Double/Multi Stars:: consists of 208 double/multi stars; a list is attached in Appendix E.

Hipparcos Catalog: the new HIP catalog consists of 120,404 records (2008).
5.1.4. Comets
This catalog contains 15 comets.
5.1.5. Asteroids
This catalog contains 116 asteroids.
5.1.6. Constellations
This catalog consists of 88 modern constellations. They are listed alphabetically; a list is
attached in Appendix E.
5.1.7. Custom Objects
This allows the storage of up to 73 user-defined comets, and /or up to 64 stars/DSOs.
24
5.1.8. Customer R.A. and DEC
Here you can go to a target by entering its R.A. and DEC coordinates.
5.2. Sync to Target
This operation will match the telescope's current coordinates to the Target Right Ascension and
Declination. It can be used to correct GOTO pointing error. After slewing to an object, press MENU then scroll to “Sync to Target” and press ENTER. Follow the screen to perform the sync. Using this
function will re-align the telescope to the selected object. Multiple syncs can be performed if needed.
This operation is useful to find a faint star or nebula near a bright star.
“Sync to Target” will work after “Select and Slew” is performed. You can change the slew rate
to make the centering procedure easier. Simply press a number (1 through 9) key to change the speed.
The default slew rate is 64x.
“Sync to Target” will improve the local GOTO accuracy near by the synced star, which is useful
for finding a faint object nearby.
5.3. Alignment
This function is used for aligning the telescope to the celestial pole and to create a sky model to
calibrate the mount’s GOTONOVA® functionality.
The hand controller provides a polar alignment via “Polar Iterate Align,” which uses a set of 2
bright. This also provides a viable polar alignment approach for those who can’t see the pole.
The system provides four alignment methods to calibrate the mount’s GOTO function: “Solar
System Align”, “One Star Alignment”, “Two Star Alignment” and “Three Star Alignment”. The “Two
Star Alignment” may be used to refine the polar alignment.
The mount has to be at Zero Position before performing any alignment.
5.3.1. Position of Polaris/SigmaOct
This function displays the position of the Pole Star. In the Northern Hemisphere the position of
Polaris is displayed, while in the Southern Hemisphere the position of Sigma Octantis is shown.
5.3.2. One Star Alignment
Press MENU => “Alignment” => “One Star Alignment.” A list of alignment stars that are above
the horizon is computed based on your local time and location. With the mount in the Zero Position, use
the▲ and ▼ buttons to select a star and press ENTER. Center the target in your eyepiece using the
arrow keys. Press ENTER when finished. If your mount is set up correctly and polar aligned, one star
alignment should be sufficient for good GoTo accuracy. To increase the pointing accuracy over the sky,
you may choose to do a three star alignment.
5.3.3. Two Star Alignment
Two Star Align can improve the accuracy of the mount’s polar alignment. Press MENU =>
“Alignment” => “Two Star Alignment” A list of alignment stars that are above the horizon is computed
based on your local time and location. With the mount at the Zero Position, use the ▲ and ▼ buttons to
select the first alignment star and press ENTER. Center the target in your eyepiece using the arrow
keys after the mount slews to it. Press ENTER when finished. The hand controller will prompt you to
choose a second star. After centering the second star, the two-star alignment is finished.
After the two-star alignment, the altitude and azimuth errors will be displayed. This number can
be used to fine tune the polar alignment.
25
For example, if the screen shows 7.5" low and 4.3" east, it means that THE MOUNT axis is
pointing low and to the east of the Celestial Pole.
5.3.4. Three Star Alignment
The three-star alignment will further determine the cone error between the OTA and mount axis.
The system will use these data to calculate the goto model. If the cone error is big enough, it is
suggested to shim the OTA in DEC to minimize it.
Press MENU => “Alignment” => “Three Star Alignment.” A list of alignment stars that are
above the horizon is computed based on your local time and location. With the mount at the Zero
Position, use the▲ and ▼ buttons to select the first alignment star and press ENTER. Center the target
in your eyepiece using the arrow keys. Press ENTER when finished. The hand controller will prompt
you to choose a second star. Select third star after the mount aligned to the second star.
The system will display the pointing and cone errors after the three star alignment accepted.
The system will update the pointing model accordingly.
5.3.5. Solar System Align
This function uses a planet or the moon as an alignment object. Press MENU => “Alignment”
=> “Solar System Align” for a list of available alignment objects.
5.3.6. Polar Iterate Align
This alignment method allows you to polar align the mount even if you cannot view the Celestial
Pole. Press the MENU button, then select “Alignment” and “Polar Iterate Align”. The HC will display a
list of bright alignment stars near the meridian as Alignment Star A. Follow the HC instructions to move
Alignment Star A to the center of the eyepiece using a combination of the Latitude Adjustment Knob
and the “◄” and “►” buttons. Press ENTER to confirm the settings. Next, select a bright star that is
close to the horizon as Alignment Star B. Center it using the Azimuth Adjustment Knobs and the “◄”
and “►” buttons (the “▲” and “▼” buttons will not function). Press ENTER to confirm the settings.
The telescope will now slew back to Alignment Star A to repeat the above steps. The iteration
can be stopped when it is determined that the alignment error has been minimized. Press the BACK
button to exit the alignment procedure.
NOTE: It is highly recommended to use an eyepiece with illuminated crosshairs for accurate
centering.
NOTE: The movement of the alignment star in your eyepiece may not be perpendicular
depending on its location in the sky.
5.3.7. View Model Error
This will display linear RA error, linear DEC error, polar misalignment, non-perpendicular
between OTA and DEC, and non-perpendicular between HA and DEC.
5.3.8. Clear Alignment Data
This will clear all alignment data created during one star, two star or three star alignment
process. If you are control the mount using planetarium software via ASCOM, and the software has its
own alignment function, please clear the alignment data.
5.4. Settings
5.4.1. Set Time and Site
Refer to STEP 7 in Section 3.
26
5.4.2. Beep Settings
The Hand Controller allows a user to turn off the beep partially, or even go to a silent mode. To
change this setting press “MENU =>Settings =>Beep Settings”,
Set Up Time and Site
Beep Settings
Display Settings
Set Guiding Rates
Set Tracking Rate
Set Parking Position
Meridian Treatment
Set Altitude Limit
Select one of three available modes:

"Always On” – a beep will be heard on each button operation or mount movement;

“On but Keyboard” – a beep will be heard only when the mount is slewing to the object or
there is a warning message;

“Always Off” – all sounds will be turned off, including the SUN warning message.
5.4.3. Display Settings
Press MENU => “Settings” => “Set Display”,
Set Up Time and Site
Beep Settings
Display Settings
Set Guiding Rates
Set Tracking Rate
Set Parking Position
Meridian Treatment
Set Altitude Limit
Use the arrow keys to adjust LCD display contrast, LCD backlight intensity, and keypad’s
backlight intensity.
5.4.4. Set Guiding Rate
Press MENU => “Settings” => “Set Guiding Rates”,
Set Up Time and Site
Beep Settings
Display Settings
Set Guiding Rates
Set Tracking Rate
Set Parking Position
Meridian Treatment
Set Altitude Limit
This is an advanced function for autoguiding when a guiding camera is utilized either via a
Guide Port or using the ASCOM protocol. Before autoguiding, align the polar axis carefully. Select an
appropriate guiding speed. The latest firmware allow you to set the R.A. and DEC guiding speed
differently. The R.A. guiding speed can be set between ±0.01X to ±0.90X sidereal rate. The DEC
guiding speed can be set between ±0.10X to ±0.99X sidereal rate. Follow the instructions of your
autoguiding software for detailed guiding operation.
The guide port wiring is shown in Figure 4, which has the same pin-out as that from a Celestron
/ Starlight Xpress / Orion Mount / Orion Autoguider/ QHY5 autoguider.
27
If you have an autoguider which has the same pin-out as the ST-I from SBIG, such as Meade/
Losmandy/ Takahashi/ Vixen, make sure a proper guiding cable is used. Refer to your guiding camera
and guiding software for detailed operation.
WARNING: DO NOT plug your ST-4 guiding camera cable into the iPORT or HBX port. It
may damage the mount or guiding camera electronics.
5.4.5. Set Tracking Rate
You can set up the mount tracking rate by selecting “Set Tracking Rate”.
Set Up Time and Site
Beep Settings
Display Settings
Set Guiding Rates
Set Tracking Rate
Set Parking Position
Meridian Treatment
Set Altitude Limit
Then the user can select “Sidereal Rate”, “Lunar Rate”, “Solar Rate”, “King Rate”, and “User
Defined Speed”. The “User defined speed” can be adjusted from 0.9900X to 1.0100X of sidereal.
The “King Rate”, developed by Edward S. King, corrects the tracking rate of a telescope to
account for atmospheric refraction. This is more useful for unguided tracking.
5.4.6. Set Parking Position
You may park the telescope before powering off the mount. This is very useful if the mount is on
a permanent pier or the mount will not be moved in between observation sessions. The mount will keep
all the alignment info and reference points.
There are six parking positions. Two positions that park the scope horizontally (Horizon
Position). Two positions that park the scope vertically (Zenith Position). “Current Position” will park
the scope at its current position. Alternatively, you can enter any altitude and azimuth combination for
“Custom Parking Pos.”. When the mount is turned on, it will use the last parking position setting as the
default setting.
5.4.7. Meridian Treatment
This function tells the mount what to do when it tracks past the meridian. You can tell the mount if it
needs a meridian flip and when to do it.

“Set Position Limit” will tell the mount when to stop tracking or to do a meridian flip. The limit
can be set at from 0° to 14° (1 hour) pass meridian.

“Set Behavior” will tell the mount if a meridian flip will be performed.
5.4.8. Set Altitude Limit
This function allows the mount to keep tracking an object even if it is below the horizon but can
still be seen, for example from an elevated observation site, such as a hill. The range can be set from 89° to +89°. The default limit is 00°. Be careful when setting this limit. It may cause mount goto
problems.
5.4.9. Enable CW Up Position
This setting will allow the CW moving to a up position. The upward angle limit is same as the
meridian flipping setting, or 14 degree at maximum. When this set is enabled, the mount will goto pass
the meridian if a object is close to the meridian, within the angle limit. There will be no meridian flip
when pass the meridian.
28
5.4.10. HC Heating Switch
Turn on/off the controller LCD back heater. When “Heating ON” is selected, the heater will
automatically be turned on when the ambient temperature reaches 0°C (32°F) and shut off at 10°C.
5.4.11. Set RA Guiding
The function is for CEM120EC only. You can turn off R.A. guiding by selecting “Filter R.A.
Guiding” to allow the high precision encoder to correct the tracking error, or turn the R.A. guiding on by
selecting “Allow RA Guiding” to allow the mount to receive guiding corrections from the guiding
software. The power on default setting is “Allow RA Guiding”.
5.4.12. Network Options
This function will display WI-FI and LAN status.

Wireless Status: displays WI-Fi network parameter after a computer/tablet/SmartPhone
connected to the mount. The CEM120 network SSID is HI-LINK_XXXX, password
12345678. If the status does not display, select and press Manual Refresh to refresh. Here
is a example screen after connection:
Wlan:AP
SSID:HI-LINK_9E49
IP:192.168.16.254
PORT:8080
MAC:08:EA:40:83:9E:48
Press BACK to exit

Wired Status: display LAN parameters after the mount is connected to a network/router. If
the status does not display, select and press Manual Refresh to refresh. Here is a example
screen after connection:
ETH:AP
IP:192.168.0.61
PORT:8080
MAC:08:EA:40:83:9E:49
Press BACK to exit

Manual Refresh: Refresh mount netwark parameter after connection.

Restart: restart the network adapter

Restore to Factory: restore the factory network setting
5.4.13. Power LED Switch
Use this setting to keep the mount power indicator (LED) on during the operation, or turn it off
automatically after 1 minute
5.4.14. Reset All Settings
Reset all the settings to factory default.
5.4.15. Language
Select one of supported menu languages. Currently has English and Chinese.
29
5.5. Electric Focuser
This function controls an iOptron electric focuser.
5.6. PEC Option
This function only works for a standard CEM120 mount.
5.6.1. PEC Playback
You can turn “PEC Playback On” to improve tracking accuracy which is especially useful for
long exposure astrophotography. The default status is “PEC Playback Off” when the mount is turned
on.
5.6.2. Record PEC
All equatorial mounts have a small variation in the worm gears which may be corrected by using
Period Error Correction or PEC. PEC is a system which improves the tracking accuracy of the mount by
compensating for variations in the worm gear and is especially useful when doing astrophotography
without autoguiding. Because the variations are regular, it is possible to record the corrections required
to cancel out the worm gear variations and to play them back to correct the periodic error caused by the
variations.
In order to use the PEC function, the Go2Nova® hand controller first needs to record the
periodic error. The periodic error of the worm gear drive will be used to correct periodic error.
We recommend using a guiding camera to record the PE with autoguiding. Here’s how to use
the PEC function:
1. Setup the mount with a telescope in autoguiding configuration by connecting a guiding
camera via the mount’s Guide Port or using the ASCOM protocol;
2. Select “MENU=>Settings => Set Guiding Rates”. Set a guiding speed from 0.10X to 0.90X.
The default setting is 0.25X;
3. Then press the BACK button and select “PEC Option” from the menu. Use the ▲ and ▼
scroll buttons to display the “Record PEC” option and press ENTER to start recording the periodic
error.
4. It takes the worm gear 240 seconds to make one complete revolution. After 240 seconds
PEC will automatically stop recording. The PEC value will be permanently stored inside PEC chip on
R.A. motor drive until a new data are recorded.
5. If you want to re-record the periodic error, select “Record PEC” and repeat the recording
processes again. The previously recorded information will be replaced with the current information.
5.6.3. PEC Data Integrity
This function will check the recorded PEC data integrity.
5.7. Park Telescope
This function parks the scope to one of four preset park positions.
30
5.8. Edit User Objects
Besides various star lists available in the hand controller, you can add, edit or delete your own
user-defined objects. This is especially useful for newly found comets. You can also add your favorite
observation object into the user object list for easy sky surfing.
5.8.1. Enter a New Comet
Press “MENU =>Edit User Objects” to set user objects.
User Defined Comet
Other Objects
Select “User Defined Comet” to add/browse/delete the user-defined comet list. Find the orbit
parameters of a comet in the SkyMap format. For example, the C/2012 ISON has an orbit parameter:
No.
Name
Year
M
Day
q
e
C/2012
S1 ISON
2013
11
28.7960
0.0125050
1.0000030
ω
345.5088
Ω
295.7379
I
H
G
61.8570
6.0
4.0
Select “Add a New Comet” to add a new one:
Add a New Comet
Browse Comets
Delete a Comet
Delete All Comets
The hand controller will display the parameter entry screen:
Enter Comet Parameter
Date: 0000-00-00.0000
q: 0.000000
e: 0.000000
ω: 000.0000
Ω: 000.0000
i: 000.0000
Enter the parameters using the arrow buttons and number keys. Press ENTER and a
confirmation screen will be displayed. Press ENTER again to store the object under the assigned user
object number, or press BACK button to cancel.
5.8.2. Enter Other Objects or Observation List
Press “MENU =>Edit User Objects” to set user objects.
User Defined Comet
Other Objects
Select “Other Objects” to enter you own object:
Add a New Object
Browse Objects
Delete One Object
Delete All Objects
31
Select “Add a New Object”. A screen will be displayed asking you to Enter R.A. and DEC
coordinates:
Enter R.A. and DEC
R.A.: 00h00m00s
DEC: +00d00m00s
You may enter the R.A. and DEC coordinates of the object you want to store, and press ENTER
to confirm.
A more useful application of this function is to store your favorite viewing objects before heading
to the field. When the “Enter R.A. and DEC” screen appears, press the MENU button. It brings up the
catalogs that you can select the object from. Follow the screen instructions to add your favorite objects.
Press BACK button to go back one level.
Press the BACK button to go back to the object entry submenu. You may review the records or
delete those that are no longer wanted. Press the BACK button to finish the operation. Now you can
slew to your favorite stars from “Custom Objects” catalog using “Select and Slew.”
5.9. Firmware Information
This option will display the mount type, firmware version information for the hand controller
(HC), Main board (Main), R.A. board (RA), DEC board (DEC) and star catalog.
5.10. Zero Position
5.10.1. Goto Zero Position
This moves your telescope to its Zero Position.
5.10.2. Set Zero Position
This set the Zero Position for the firmware.
The Zero Position reference will be an undefined value after firmware upgrade, or it may lost
during power outage or HC battery replacement. You can use this function to set the zero position
reference.
Press the ENTER after moving the mount to Zero Position either manually or with the hand
controller.
5.10.3. Search Zero Pos.
In the event of power failure, the mount will lose all its alignment information. This can be very
troublesome if the mount is being operated from a remote observation site and is controlled via the
internet. To counter this, the CEM120 has been equipped with a function that can find the Zero Position
for an initial mount set up.
Select “Search Zero Pos.” and the mount will start to slew slowly and find the R.A. and DEC
position to set the mount to the Zero Position. When the mount has found the Zero Position, the HC will
ask if you want to calibrate the Zero Position. Press ENTER to confirm. The mount will then provide a
list of bright stars for you to perform alignment. This will correct any discrepancy in the Zero Position.
Alternatively, press BACK to cancel.
32
6. Maintenance and Servicing
6.1. Maintenance
The CEM120 mount is designed to be maintenance free. Do not overload the mount. Do not
drop the mount as this will damage the mount and / or permanently degrade GoTo performance and
tracking accuracy. Use a wet cloth to clean the mount and hand controller. Do not use solvent.
If your mount is not to be used for an extended period, dismount the OTAs and counterweight(s).
6.2. iOptron Customer Service
If you have any question concerning your CEM120 mount contact iOptron Customer Service
Department. Customer Service hours are from 9:00 AM to 5:00 PM, Eastern Time, Monday through
Friday. In the event that the CEM120 requires factory servicing or repairing, write or call iOptron
Customer Service Department first to receive an RMA# before returning the mount to the factory.
Please provide details as to the nature of the problem as well as your name, address, e-mail address,
purchase information and daytime telephone number. We have found that most problems can be
resolved by e-mails or telephone calls, so please contact iOptron first to avoid returning the mount for
repair.
It is strongly suggested that to send technical questions to support@ioptron.com. Call in the
U.S. 1.781.569.0200.
6.3. Product End of Life Disposal Instructions
This electronic product is subject to disposal and recycling regulations that vary by
country and region. It is your responsibility to recycle your electronic equipment per your
local environmental laws and regulations to ensure that it will be recycled in a manner
that protects human health and the environment. To find out where you can drop off your
waste equipment for recycling, please contact your local waste recycle/disposal service
or the product representative.
6.4. Battery Replacement and Disposal Instructions
Battery Disposal: Batteries contain chemicals that, if released, may affect the
environment and human health. Batteries should be collected separately for recycling,
and recycled at a local hazardous material disposal location adhering to your country and
local government regulations. To find out where you can drop off your waste battery for
recycling, please contact your local waste disposal service or the product representative.
33
Appendix A. Technical Specifications
Mount Center‐balanced Equatorial Mount (CEM) Payload 52kg (115 lbs), exclude counterweight* Mount weight 26kg (57 lbs) Payload/Mount weight ratio 2 Material All metal Latitude adjustment range 0°~ 68° (0.5 arcmin division)** Azimuth adjustment range ± 5° (3 arcmin division) Right Ascension worm wheel Φ216mm, 360 teeth, zero backlash Declination worm wheel Φ216mm, 360 teeth, zero backlash Worm Φ26mm PEC PPEC/Real time PEC PE ~±3.5 arcsec p‐p (#7300) or <0.15 arcsec RMS for 5 min (#7301)
Worm period 240 sec Counterweight shaft Φ38, 540 mm (SS, anti‐slip, 4.5kg) Counterweight 10 kg (22 lbs) Mount base size 210 x 230 mm Motor drive Stepper motor Resolution 0.07 arc seconds Slew speed 1×,2×,8×,16×,64×,128×,256×,512×,MAX(~4°/sec) Power consumption 0.7A(Tracking), 1.8A(GOTO) Power requirement 12V DC 5A AC adapter 100V ~ 240V (included) Polar scope Optional electronic polar scope Hand Controller Go2Nova® 8407+,212,000+ objects database, star recognition Meridian treatment Stop (0‐14° pass), auto flip Zero position Automatic zero search Park position Horizontal, vertical, current, alt/azi input Level indicator Yes Dovetail saddle Losmandy D, 17.2" (437mm) GPS Yes Autoguide port ST‐4 Communication port RS232, USB, LAN, Wi‐Fi PC computer control Yes (ASCOM) 2xDC12V (1A), DC5V(1A), 2xDC (5A), ST4, 6P6C, 4xUSB2.0, Cable management USB3.0 (powered), USB for PS, AUX Operation temperature ‐10°C ~ +40°C Pier/tripod Optional Pier Warranty Two year limited *These are only guidelines. Some telescopes are very long or very big for their weight and may require a larger mount. Remember also that imaging requirements are more rigid than visual observation. **For latitude below 10°, a special CW shaft mounting house is needed.
34
Appendix B. Go2Nova® 8407+ HC MENU STRUCTURE
MENU
Select and Slew
Solar System
Mercury
Venus
Mars
Jupiter
Saturn
Uranus
Neptune
Sun
Moon
Deep Sky Objects
Named Object
Messier Catalog
NGC
IC
PGC
Caldwell Catalog
Abell Catalog
Herschel Catalog
Stars
Named Stars
Double/Multi Stars
SAO Catalog
Constellations
Comets
Asteroids
Custom Objects
Objects Except Comet
User Def ined Comet
Custom R.A. and DEC
Sync. To Target
35
Alignment
Position of Pole Star
One Star Align
Two Star Align
Three Star Alin
Polar Iterate Align
Solar System Align
View Model Error
Clear Alignment Data
Settings
Set Time & Site
Beep Settings
Display Settings
Set Guiding Rates
Set Tracking Rate
Set Parking Position
Meridian Treatment
Set Altitude Limit
Enable CW Up Pos.
HC Heating Switch
Network Option
Power LED Switch
Reset All Settingd
Language
Electric Focuser
PEC Option
PEC Playback
Record PE
PEC Data Integrity
Park Telescope
36
Edit User Objects
Custom Comets
Add a New Comet
Browse Comets
Delete One Comet
Delete All Comets
Other Objects
Add a New Object
Browse Objects
Delete One Object
Delete All Objects
Firmware Inf ormation
Zero Position
Goto Zero Position
Set Zero position
Search Zero position
37
Appendix C. Firmware Upgrade
The firmware in the 8407+ Hand Controller and control boards can be upgraded by the
customer. Please check iOptron’s website, www.iOptron.com, under Support Directory/CEM Mounts,
select CEM120 for details.
38
Appendix D. Computer Control a CEM120 Mount
The CEM120 mount can be connected to a computer, a tablet, and/or a SmartPhonebe via serial, USB,
LAN or WI-Fi connection.
Please refer to iOptron website, www.iOptron.com, under Support Directory/ASCOM Driver, iOptron
Telescope ASCOM Driver, for more details.
39
Appendix E. Go2Nova®Star List
Named Deep Sky Object
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47 Tucanae
Andromeda Galaxy
Antennae Galaxies
Barnard's Galaxy
Bear‐Paw Galaxy
Beehive Cluster
Black Eye Galaxy
Blinking Planetary
Blue Flash Nebula
Blue Planetary
Blue Snowball Nebula
Bode's Galaxy
Box Nebula
Bubble Nebula
Bug Nebula
Butterfly Cluster
Butterfly Galaxies
California Nebula
Carina Nebula
Cat's Eye Nebula
Cave Nebula
Christmas Tree Cluster
Cigar Galaxy
Cocoon Nebula
Coma Pinwheel
Copeland Septet
Crab Nebula
Crescent Nebula
Draco Dwarf Galaxy
Dumbbell Nebula
Eagle Nebula
Eight‐Burst Nebula
Elephant Trunk Nebula
Eskimo Nebula
Eyes Galaxies
Flame Nebula
Flaming Star Nebula
Ghost of Jupiter
Heart Nebula
Helix Nebula
Hercules Globular Cluster
Hind's Variable Nebula
Hockey Stick Galaxies
Horsehead Nebula
Hubble's Variable Nebula
Hyades Cluster
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
Integral Sign Galaxy
Iris Nebula
Jellyfish Nebula
Jewel Box Cluster
Lagoon Nebula
Lambda Centauri Nebula
Large Magellanic Cloud
Leo Triplet
Little Dumbbell Nebula
Little Gem Nebula
Little Ghost Nebula
Mice Galaxies
Monkey Head Nebula
North America Nebula
Northern Jewel Box
Omega Nebula
Orion Nebula
Owl Nebula
Pacman Nebula
Pelican Nebula
Phantom Streak Nebula
Pinwheel Galaxy
Pleiades
Ring Nebula
Rosette Nebula
Saturn Nebula
Sextans B
Small Magellanic Cloud
Sombrero Galaxy
Soul Nebula
Southern Pinwheel Galaxy
Spindle Galaxy(3115)
Spindle Galaxy(5866)
Stephan's Quintet
Sunflower Galaxy
Tarantula Nebula
The Witch Head Nebula
The Wizard Nebula
Thor's Helmet
Triangulum Galaxy
Trifid Nebula
Ursa Minor Dwarf Galaxy
Veil Nebula
Whale Galaxy
Whirlpool Galaxy
Wild Duck Cluster
Messier Catalog
This table is licensed under the GNU Free Documentation License. It uses material from the Wikipedia
article List of Messier objects
41
Named Stars
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
Acamar
Achernar
Achird
Acrab
Acrux A
Acrux B
Acubens
Adhafera
Adhara
Adid Australis
Ahadi
Al Dhanab
Al Dhibain Prior
Al Kab
Al Nair
Al Nair al Baten
Al Niyat(Sigma)
Al Niyat(Tau)
Albaldah
Albali
Albireo
Alchiba
Alcor
Alcyone
Aldebaran
Alderamin
Alfirk
Algenib
Algenubi
Algieba
Algiedi Secunda
Algol
Algorab
Alhakim
Alhena
Alioth
Alkaid
Alkalurops
Alkes
Almaaz
Almach
Alnasl
Alnilam
Alnitak
Alpha Muscae
Alpha Tucanae
Alphard
Alphecca
Alpheratz
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
Alrescha
Alshain
Altair
Altais
Alterf
Aludra
Alula Australis
Alula Borealis
Alya
Ancha
Ankaa
Antares
Apollyon
Arcturus
Arkab Prior
Arneb
Ascella
Asellus Austral
Asellus Boreali
Aspidiske
Atik
Atlas
Atria
Avior
Azha
Barnard's Star
Baten Kaitos
Beid
Bellatrix
Beta Hydri
Betelgeuse
Betria
Biham
Birdun
Canopus
Capella
Caph
Castor A
Castor B
Cebalrai
Chara
Chertan
Choo
Cor Caroli
Cursa
Dabih
Deltotum
Deneb
Deneb Algedi
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
42
Deneb el Okab
Deneb Kaitos
Denebakrab
Denebola
Dschubba
Dubhe
Edasich
El Rehla
Electra
Elnath
Eltanin
Enif
Errai
Fomalhaut
Furud
Gacrux
Gatria
Giausar
Gienah Corvi
Gienah Cygni
Girtab
Gliese 1
Gomeisa
Graffias(Zeta)
Groombridge 1830
Gruid
Grumium
Hadar
Hamal
Han
Hatsya
Head of Hydrus
Homam
Iritjinga(Cen)
Izar
Kakkab Su-gub Gud-Elim
Kapteyn's Star
Kaus Australis
Kaus Borealis
Kaus Media
Keid
Kekouan
Kitalpha
Kochab
Koo She
Kornephoros
Kraz
Kurhah
Lacaille 9352
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
Lalande 21185
Lesath
Mahasim
Maia
Marfik
Marfikent
Markab
Markeb
Matar
Mebsuta
Megrez
Meissa
Mekbuda
Menkalinan
Menkar
Menkent
Menkib
Merak
Merope
Mesartim
Miaplacidus
Mimosa
Mintaka
Mira
Mirach
Mirfak
Mirzam
Mizar
Mu Velorum
Muhlifain
Muphrid
Muscida
Naos
Nashira
Navi
Nekkar
Nihal
Nunki
Nusakan
Palida
Peacock
Phact
Phecda
Pherkad
Polaris
Pollux
Porrima
Procyon
Propus
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
Proxima Centauri
Rasalas
Rasalgethi
Rasalhague
Rastaban
Regor
Regulus
Rigel
Rigel Kentaurus A
Rigel Kentaurus B
Ruchbah
Rukbat
Rukh
Rutilicus
Sabik
Sadachbia
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
Sadalbari
Sadalmelik
Sadalsuud
Sadr
Saiph
Sargas
Scheat
Schedar
Seginus
Shaula
Sheliak
Sheratan
Sirius
Skat
Spica
Suhail
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
43
Sulafat
Syrma
Talitha
Tania Australis
Tania Borealis
Tarazed
Taygeta
Tejat Posterior
Thuban
Thusia
Tien Kwan
Turais
Unukalhai
Vasat-ul-cemre
Vathorz Posterior
Vega
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
Vindemiatrix
Vrischika
Wasat
Wazn
Wei
Wezen
Yed Posterior
Yed Prior
Zaniah
Zaurak
Zavijava
Zeta Persei
Zosma
Zubenelgenubi
Zubeneschamali
Modern Constellations
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Constellation
Andromeda
Antlia
Apus
Aquarius
Aquila
Ara
Aries
Auriga
Boötes
Caelum
Camelopardalis
Cancer
Canes Venatici
Canis Major
Canis Minor
Capricornus
Carina
Cassiopeia
Centaurus
Cepheus
Cetus
Chamaeleon
Circinus
Columba
Coma Berenices
Corona Australis
Corona Borealis
Corvus
Crater
Crux
Cygnus
Delphinus
Dorado
Draco
Equuleus
Eridanus
Fornax
Gemini
Grus
Hercules
Horologium
Hydra
Hydrus
Indus
Abbreviation
And
Ant
Aps
Aqr
Aql
Ara
Ari
Aur
Boo
Cae
Cam
Cnc
CVn
CMa
CMi
Cap
Car
Cas
Cen
Cep
Cet
Cha
Cir
Col
Com
CrA
CrB
Crv
Crt
Cru
Cyg
Del
Dor
Dra
Equ
Eri
For
Gem
Gru
Her
Hor
Hya
Hyi
Ind
No.
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
Constellation
Lacerta
Leo
Leo Minor
Lepus
Libra
Lupus
Lynx
Lyra
Mensa
Microscopium
Monoceros
Musca
Norma
Octans
Ophiuchus
Orion
Pavo
Pegasus
Perseus
Phoenix
Pictor
Pisces
Piscis Austrinus
Puppis
Pyxis
Reticulum
Sagitta
Sagittarius
Scorpius
Sculptor
Scutum
Serpens
Sextans
Taurus
Telescopium
Triangulum
Triangulum Australe
Tucana
Ursa Major
Ursa Minor
Vela
Virgo
Volans
Vulpecula
Abbreviation
Lac
Leo
LMi
Lep
Lib
Lup
Lyn
Lyr
Men
Mic
Mon
Mus
Nor
Oct
Oph
Ori
Pav
Peg
Per
Phe
Pic
Psc
PsA
Pup
Pyx
Ret
Sge
Sgr
Sco
Scl
Sct
Ser
Sex
Tau
Tel
Tri
TrA
Tuc
UMa
UMi
Vel
Vir
Vol
Vul
Double/Multi Stars
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
RigelKentaurus A
Rigel
Gacrux
Sargas
Castor A
Mizar
Almach
Algieba
Aludra
Iritjinga(Cen)
Zubenelgenubi
Alcyone
Cor Caroli
Acamar
Adhafera
Rasalgethi
Meissa
Graffias(Zeta)
Alya
HIP 48002
HIP 95947
HIP 20894
HIP 74395
HIP 27072
HIP 26549
HIP 85667
HIP 74376
HIP 34481
HIP 53253
HIP 99675
HIP 63003
HIP 43103
HIP 110991
HIP 20635
HIP 88601
HIP 2484
HIP 91971
HIP 79374
HIP 102532
HIP 52154
HIP 37229
HIP 30419
HIP 108917
HIP 53417
HIP 65271
HIP 67669
HIP 105319
HIP 80582
HIP 8832
HIP 69483
HIP 92946
HIP 86614
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
95771
30867
35363
94761
21683
8497
26199
104521
116389
17797
21036
107310
72659
21029
42726
18255
9153
88267
85829
43937
71762
80047
58484
25142
54204
76669
99770
101027
74911
35210
26235
40321
70327
26221
80473
78105
79043
61418
91919
41639
104214
23734
60189
66821
14043
5737
84626
60904
58684
5131
115126
62572
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
45
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
HIP
40167
40817
81292
80197
88060
42637
21039
100965
25768
93717
79980
12086
90968
22531
34065
79607
109786
56280
51561
107930
97966
117218
82676
111546
29151
107253
88136
81702
97423
30444
66400
17579
35785
81641
7751
21148
9021
97816
88818
36817
25695
98819
61910
111643
80399
83478
101123
28271
64246
96895
35564
37843
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
HIP 28790
HIP 4675
HIP 31676
HIP 10176
HIP 25950
HIP 117931
HIP 81914
HIP 21242
HIP 86831
HIP 115272
HIP 46657
HIP 41404
HIP 29388
HIP 49321
HIP 84054
HIP 39035
HIP 25303
HIP 52520
HIP 95398
UCAC4 277-135548
HIP 32609
HIP 101765
HIP 24825
HIP 31158
HIP 3885
HIP 93371
HIP 36345
HIP 108364
HIP 50939
HIP 76603
HIP 32269
HIP 42516
HIP 62807
UCAC4 226-128246
HIP 94913
HIP 94336
HIP 107299
HIP 59984
HIP 16411
HIP 23287
HIP 105637
HIP 108925
HIP 103814
HIP 58112
HIP 109354
HIP 43822
HIP 21986
HIP 17470
HIP 35960
HIP 42936
HIP 19272
HIP 76143
IOPTRON TWO YEAR TELESCOPE, MOUNT, AND CONTROLLER WARRANTY
A. iOptron warrants your telescope, mount, or controller to be free from defects in materials and workmanship for two years. iOptron
will repair or replace such product or part which, upon inspection by iOptron, is found to be defective in materials or workmanship.
As a condition to the obligation of iOptron to repair or replace such product, the product must be returned to iOptron together with
proof-of-purchase satisfactory to iOptron.
B. The Proper Return Merchant Authorization Number must be obtained from iOptron in advance of return. Call iOptron at
1.781.569.0200 to receive the RMA number to be displayed on the outside of your shipping container.
All returns must be accompanied by a written statement stating the name, address, and daytime telephone number of the owner,
together with a brief description of any claimed defects. Parts or product for which replacement is made shall become the property
of iOptron.
The customer shall be responsible for all costs of transportation and insurance, both to and from the factory of iOptron, and shall be
required to pre-pay such costs.
iOptron shall use reasonable efforts to repair or replace any telescope, mount, or controller covered by this warranty within thirty
days of receipt. In the event repair or replacement shall require more than thirty days, iOptron shall notify the customer accordingly.
iOptron reserves the right to replace any product which has been discontinued from its product line with a new product of
comparable value and function.
This warranty shall be void and of no force of effect in the event a covered product has been modified in design or function, or
subjected to abuse, misuse, mishandling or unauthorized repair. Further, product malfunction or deterioration due to normal wear is
not covered by this warranty.
IOPTRON DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WHETHER OF MERCHANTABILITY OF FITNESS FOR A
PARTICULAR USE, EXCEPT AS EXPRESSLY SET FORTH HERE. THE SOLE OBLIGATION OF IOPTRON UNDER THIS
LIMITED WARRANTY SHALL BE TO REPAIR OR REPLACE THE COVERED PRODUCT, IN ACCORDANCE WITH THE TERMS
SET FORTH HERE. IOPTRON EXPRESSLY DISCLAIMS ANY LOST PROFITS, GENERAL, SPECIAL, INDIRECT OR
CONSEQUENTIAL DAMAGES WHICH MAY RESULT FROM BREACH OF ANY WARRANTY, OR ARISING OUT OF THE USE
OR INABILITY TO USE ANY IOPTRON PRODUCT. ANY WARRANTIES WHICH ARE IMPLIED AND WHICH CANNOT BE
DISCLAIMED SHALL BE LIMITED IN DURATION TO A TERM OF TWO YEARS FROM THE DATE OF ORIGINAL RETAIL
PURCHASE.
Some states do not allow the exclusion or limitation of incidental or consequential damages or limitation on how long an implied
warranty lasts, so the above limitations and exclusions may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
iOptron reserves the right to modify or discontinue, without prior notice to you, any model or style telescope.
If warranty problems arise, or if you need assistance in using your telescope, mount, or controller contact:
iOptron Corporation
Customer Service Department
6E Gill Street
Woburn, MA01801
www.ioptron.com
support@ioptron.com
Tel. (781)569-0200
Fax. (781)935-2860
Monday-Friday 9AM-5PM EST
NOTE: This warranty is valid to U.S.A. and Canadian customers who have purchased this product from an authorized iOptron
dealer in the U.S.A. or Canada or directly from iOptron. Warranty outside the U.S.A. and Canada is valid only to customers who
purchased from an iOptron Distributor or Authorized iOptron Dealer in the specific country. Please contact them for any warranty.
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