Celestron Advanced Series C5-S, C8-S, C9.25-S, Advanced GT, OMNI Plossl 4mm, 6mm, 9mm, 12.5mm, 5mm, 20mm, 25mm, 32mm and 40mm, X-Cel 2.3mm, 5mm, 8mm, 10mm, 12.5mm, 8mm, 21mm, 25mm, Ultima 5mm, 7.5mm, 10mm, 12.5mm, 18mm, 30mm, 35mm, and 42mm User guide

 While your telescope requires little maintenance, there are a few things to remember that will ensure your telescope performs at
its best.
Care and Cleaning of the Optics
Occasionally, dust and/or moisture may build up on the corrector plate of your telescope. Special care should be taken when
cleaning any instrument so as not to damage the optics.
If dust has built up on the corrector plate, remove it with a brush (made of camel’s hair) or a can of pressurized air. Spray at an
angle to the lens for approximately two to four seconds. Then, use an optical cleaning solution and white tissue paper to remove
any remaining debris. Apply the solution to the tissue and then apply the tissue paper to the lens. Low pressure strokes should
go from the center of the corrector to the outer portion. Do NOT rub in circles!
You can use a commercially made lens cleaner or mix your own. A good cleaning solution is isopropyl alcohol mixed with
distilled water. The solution should be 60% isopropyl alcohol and 40% distilled water. Or, liquid dish soap diluted with water (a
couple of drops per one quart of water) can be used.
Occasionally, you may experience dew build-up on the corrector plate of your telescope during an observing session. If you want
to continue observing, the dew must be removed, either with a hair dryer (on low setting) or by pointing the telescope at the
ground until the dew has evaporated.
If moisture condenses on the inside of the corrector, remove the accessories from the rear cell of the telescope. Place the
telescope in a dust-free environment and point it down. This will remove the moisture from the telescope tube.
To minimize the need to clean your telescope, replace all lens covers once you have finished using it. Since the rear cell 1s NOT
sealed, the cover should be placed over the opening when not in use. This will prevent contaminants from entering the optical
tube.
Internal adjustments and cleaning should be done only by the Celestron repair department. If your telescope is in need of internal
cleaning, please call the factory for a return authorization number and price quote.
Collimation
The ie optical performance of your telescope is directly related to its collimation, that is the alignment of its optical system. Your
telescope was collimated at the factory after it was compietely assembled. However, 1f
the telescope is dropped or jarred severely during transport, it may have to be
collimated. The only optical element that may need to be adjusted, or is possible, is the
tilt of the secondary mirror.
To check the collimation of your telescope you will need a light source. A bright star
near the zenith is ideal since there is a minimal amount of atmospheric distortion. Make
sure that tracking is on so that you won’t have to manually track the star. Or, if you do
not want to power up your telescope, you can use Polaris. Its position relative to the
celestial pole means that it moves very little thus eliminating the need to manually track
it.
Before you begin the collimation process, be sure that your telescope is in thermal
equilibrium with the surroundings. Allow 45 minutes for the telescope to reach
equilibrium if you move it between large temperature extremes.
| Fig ure 81 - CL | . ; .
The three | pe screws are > lncated. | To verify collimation, view a star near the zenith. Use a medium to high power ocular
on the front of the secondary mirror — 12mm to 6mm focal length. It is important to center a star in the center of the field to
“housing: = judge collimation. Slowly cross in and out of focus and judge the symmetry of the star.
If you see a systematic skewing of the star to one side, then re-collimation is needed.
47
Figure 8-2 -- Even though the star pattern appears the same on both sides of focus, they are asymmetric.
dark obstruction is skewed off to the left side of the diffraction pattern indicating poor collimation.
To accomplish this, you need to tighten the secondary collimation screw(s) that move the star across the field toward the
direction of the skewed light. These screws are located in the secondary mirror holder (see figure 8-1). Make only small 1/6 to
1/8 adjustments to the collimation screws and re-center the star by moving the scope before making any improvements or before
making further adjustments.
To make collimation a simple procedure, follow these easy steps:
L. While looking through a medium to high power eyepiece, de-focus a bright star until a ring pattern with a dark shadow
appears (see figure 8-2). Center the de-focused star and notice in which direction the central shadow 1s skewed.
2. Place your finger along the edge of the front cell of the telescope (be careful not to touch the corrector plate), pointing
towards the collimation screws. The shadow of your finger should be visible when looking into the eyepiece. Rotate
your finger around the tube edge until its shadow is seen closest to the narrowest portion of the rings (i.e. the same
direction in which the central shadow is skewed). |
Locate the collimation screw closest to where your finger is positioned. This will be the collimation screw you will
need to adjust first. (If your finger is positioned exactly between two of the collimation screws, then you will need to
adjust the screw opposite where your finger is located).
(sa
4. Use the hand control buttons to move the de-focused star image to the edge of the field of view, in the same direction
that the central obstruction of the star image is skewed.
5. While looking through the eyepiece, use an Allen wrench to turn the collimation screw you located in step 2 and 3.
Usually a tenth of a turn is enough to notice a change in collimation. If the star image moves out of the field of view in
the direction that the central shadow is skewed, than you are turning the collimation
screw the wrong way. Turn the screw in the opposite direction, so that the star image 18
moving towards the center of the field of view.
6. If while turning you notice that the screws get very loose, then simply tighten the other
two screws by the same amount. Conversely, if the collimation screw gets too tight,
then loosen the other two screws by the same amount.
7. Once the star image is in the center of the field of view, check to see if the rings are
concentric. If the central obstruction is still skewed in the same direction, then continue
; turning the screw(s) in the same direction. If you find that the ring pattern 1s skewed in
Figure 8-3 a different direction, than simply repeat steps 2 through 6 as described above for the new
A collimated telescope direction | |
should appear о
symmetrical with the . o I |
central obstruction Perfect collimation will yield a star image very symmetrical just inside and outside of focus. In
centered in the star's addition, perfect collimation delivers the optimal optical performance specifications that your
p p p p Р
diffraction pattern. telescope is built to achieve.
If seeing (i.e., air steadiness) is turbulent, collimation is difficult to judge. Wait until a better night if it is turbulent or aim to a
steadier part of the sky. A steadier part of the sky is judged by steady versus twinkling stars.
48
You will find that additional accessories enhance your viewing pleasure and expand the usefulness of your
telescope. For ease of reference, all the accessories are listed in alphabetical order.
Adapter AC (#18773) - Allow DC (battery powered) telescopes to be converted for use with 120 volt AC power.
Auxiliary Port Accessory (#93965) — This accessory plugs into the auxiliary port of the telescopes control panel to
provide additional ports for accessories like the CN-16 GPS as well as a PC programming port.
Barlow Lens - A Barlow lens is a negative lens that increases the focal length of a telescope. Used with any eyepiece, it
doubles the magnification of that eyepiece. Celestron offers two Barlow lens in the 1-1/4" size. The 2x Ultima Barlow
(#93506) is a compact triplet design that is fully multicoated for maximum light transmission and parfocal when used with
the Ultima eyepieces. The OMNI Barlow (#93326) is a compact achromatic Barlow lens that is under three inches long and
weighs only 4 oz. It works very well with all Celestron eyepieces.
Erect Image Diagonal (#94112-A) - This accessory is an Amici prism arrangement that allows you to look into the
telescope at a 45% angle with images that are oriented properly (upright and correct from left-to-right). It is useful for
daytime, terrestrial viewing.
Eyepieces - Like telescopes, eyepieces come in a variety of designs. Each design has its own advantages and
disadvantages. For the 1-1/4" barrel diameter there are four different eyepiece designs available.
e OMNI Plgssl - Plossl eyepieces have a 4-element lens designed for low-to-high power observing. The Plôssis offer
razor sharp views across the entire field, even at the edges! In the 1-1/4" barrel diameter, they are available in the
following focal lengths: 4mm, 6mm, 9mm, [2.5mm, 5mm, 20mm, 25mm, 32mm and
40mm.
e X-Cel - This 6 element design allows each X-Cel Eyepiece to have 20mm of eye relief, 55°
field of view and more than 25mm of lens aperture (even with the 2.3mm). In order to
maintain razor sharp, color corrected images across its 55° field of view, extra-low dispersion
glass is used for the most highly curved optical elements. The excellent refractive properties
of these high grade optical elements, make the X-Cel line especially well suited for high
magnification planetary viewing where sharp, color-free views are most appreciated. X-Cel
eyepiece come in the following focal lengths: 2.3mm, 5mm, 8mm, 10mm, 12.5mm, 8mm,
21mm, 25mm.
е Ultima - Ultima is our 5-element, wide field eyepiece design. In the 1-1/4" barrel diameter,
they are available in the following focal lengths: 5mm, 7.5mm, 10mm, 12.5mm, 18mm,
30mm, 35mm, and 42mm. These eyepieces are all parfocal. The 35mm Ultima gives the
widest possible field of view with a 1-1/4" diagonal.
* Axiom - As an extension of the Ultima line, a new wide angle series is offered — called the Axiom series. All units are
seven element designs and feature a 70° extra wide field of view (except the 50mm). All are fully multicoated and
contain all the features of the Ultimas.
Filters Sets, Eyepiece - Celestron offers four convenient filter sets, which contain four different filters per set. Not only
are these highly useful filter combinations, but they also offer an economical way to add versatility to your filter collection.
Series 1 —#94119-10
Orange, Light Blue, ND13%T, Polarizing (#s 21, 80A, #15, Polarizing)
49
Series 2 — #94119-20
Deep Yellow, Red, Light Green, ND25% T (#s 12, 25, 56, 96ND-25)
Series 3 — #941 19-30
Light Red, Blue, Green, ND50% T (#s 23A, 38A, 58, 96ND-50)
Series 4 — #94119-40
Yellow, Deep Yellow, Violet, Pale Blue (#s 8, 47, 82A, ND96-13)
Flashlight, Night Vision - (#93588) - Celestron’s premium model for astronomy, using two red LED's to preserve night
vision better than red filters or other devices. Brightness is adjustable. Operates on a single 9 volt battery (included).
CN16 GPS Accessory (#93963) - Plug in this 16-channel GPS module into your telescopes drive base port to link up and
automatically download information from one of many global positioning satellites. Controlled with the computerized hand
control, the CN-16 will greatly improve the accuracy of your star alignments.
CN16 GPS Bracket {#93964) — Support your CN-16 GPS accessory with this bracket and strap combination that securely
wraps around any of the tripod legs and holds the GPS module in place .
Light Pollution Reduction (LPR) Filters - These filters arc designed to enhance your views of deep sky astronomical
objects when viewed from urban areas. LPR Filters selectively reduce the transmission of certain wavelengths of hght,
specifically those produced by artificial lights. This includes mercury and high and low pressure sodium vapor lights. In
addition, they also block unwanted natural light (sky glow) caused by neutral oxygen emission in our atmosphere. Celestron
offers a model for 1-1/4" eyepieces (#94126A) and a model that attaches to the rear cell ahead of the star diagonal and visual
back (#94127A).
Micro Guide Evepiece (#94171) - This multipurpose 2.5mm illuminated reticle can be used for
guiding deep-sky astrophotos, measuring position angles, angular separations, and more. The
laser etched reticle provides razor sharp lines and the variable brightness illuminator is
completely cordless. The micro guide eyepiece produces 163 power with the C8-S and 188
power with the C9.25-S.
Moon Filter (#94119-A) - Celesiron’s Moon Filter is an economical eyepiece filter for reducing
the brightness of the moon and improving contrast, so greater detail can be observed on the lunar
surface. The clear aperture is 21mm and the transmission is about 18%.
Motor Drive, Single Axis (#93518) — This motor drive is a single axis (R.A.), DC motor drive. It is powered by four D-
cell batteries (not included). 2x and 4x sidereal speeds are available through the included hand controller. For non-
computerized Advanced Series Mounts.
Motor Drive, Dual Axis (#93523) - This dual axis motor drive, with drive corrector capabilities, are designed for
Celestron's Advanced CG-5 mounts. They precisely control the telescope's tracking speed during long, timed exposures of
celestial objects, producing the best possible image sharpness. Four speeds are available—1x (sidereal), 2x for guiding, 4x,
and 8x for centering. These precision, state-of-the-art DC motor drives operate from 4 D-cell batteries (not included). The
hand controller module is very compact and fits easily in the palm of your hand. Motors for both axes are included, along
with brackets, clutches and hardware. For non-computerized Advanced Series Mounts.
Polarizing Filter Set (#93608) - The polarizing filter set limits the transmission of light to a specific plane, thus increasing
contrast between various objects. This is used primarily for terrestrial, lunar and planetary observing.
Polar Axis Finderscope (#94220) — This useful accessory speeds accurate polar alignment by providing a means of
visually aligning your German equatorial mount with Polaris and true north. As a result, you can spend more time observing
and less time setting up. The finderscope has an easy to use cross hair reticle.
PowerTank (#18774) — 12v 7Amp hour rechargeable power supply. Comes with
two 12v output cigarette outlets, built-in red flash light , Halogen emergency
spotlight. Switchable 110v/220v AC adapter and cigarette lighter adapter included.
50
Radial Guider (#94176) - The Celestron Radial Guider® is specifically designed for use
in prime focus, deep sky astrophotography and takes the place of the T-Adapter. This
device allows you to photograph and guide simultaneously through the optical tube
assembly of your telescope. This type of guiding produces the best results since what you
see through the guiding eyepiece is exactly reproduced on the processed film. The Radial
Guider is a “T-shaped assembly that attaches to the rear cell of the telescope. As light
from the telescope enters the guider, most passes straight through to the camera. A small
portion, however, is diverted by a prism at an adjustable angle up to the guiding eyepiece.
This guider has two features not found on other off-axis guiders; first, the prism and
eyepiece housing rotate independently of the camera orientation making the acquisition of
a guide star quite easy. Second, the prism angle is tunable allowing you to look at guide stars on-axis. This accessory works
especially well with the Reducer/Corrector.
Reducer/Corrector (#94175) - This lens reduces the focal length of the telescope by 37%, making your C8-S a
1280mm {/6.3 instrument. In addition, this unique lens also corrects inherent
aberrations to produce crisp images all the way across the field when used visually. When
used photographically, there 1s some vignetting that produces a 26mm circular image on
the processed film. It also increases the field of view significantly and is ideal for wide-
field, deep-space viewing. It is also perfect for beginning prime focus, long-exposure
astro photography when used with the radial guider. It makes guiding easier and
exposures much shorter.
RS-232 Cable (#93920) — Allows your Advanced Series telescope to be controlled using
a laptop computer or PC. Once connected, the telescope can be controlled using popular
astronomy software programs.
Sky Maps (#93722) - Celestron Sky Maps are the ideal teaching guide for learning the night sky. You wouldn’t set off on a
road trip without a road map, and you don’t need to try to navigate the night sky without a map either. Even if you already
know your way around the major constellations, these maps can help you locate all kinds of fascinating objects.
Skylight Filter (#93621) - The Skylight Filter 1s used on the Celestron telescope as a dust seal. The filter threads onto the
rear cell of your telescope. All other accessories, both visual and photographic (with the exception of Barlow lenses), thread
onto the skylight filter. The light loss caused by this filter 1s minimal.
Solar Filter - The Baader AstroSolar® filter is a safe and durable filter that covers the front opening of the telescope. View
sunspots and other solar features using this double-sided metal coated filter for uniform density and good color balance
across the entire field. The Sun offers constant changes and will keep your observing interesting and fun. Celestron offers
filters for the C5-S (#94139) and C8-S (494162).
T-Adapter (#93633-A) - T-Adapter (with additional T-Ring) allows you to attach your SLR camera to the rear cell of your
Celestron telescope. This turns your telescope into a high power telephoto lens perfect for terrestrial photography and
short exposure lunar and filtered solar photography.
T-Ring - The T-Ring couples your 35mm SLR camera body to the T-Adapter, radial guider, or tele-extender. This
accessory is mandatory if you want to do photography through the telescope. Each camera make (i.e., Minolta, Nikon,
Pentax, etc.) has its own unique mount and therefore, its own T-Ring. Celestron has 8 different models for 35mm cameras.
Tele-Extender, Deluxe (#93643) - The tele-extender is a hollow tube that allows you to attach a camera to the telescope
when the eyepiece is installed. This accessory 1s used for eyepiece projection photography which allows you to capture very
high power views of the Sun, Moon, and planets on film. The tele-extender fits over the eyepiece onto the visual back. This
tele-extender works with eyepieces that have large housings, like the Celestron Ultima series.
A full description of all Celestron accessories can be found in the Celestron Accessory Catalog (#93685)
51
Appendix A — Technical Specifications
Advanced Series
11071/11072
11025/11026
11045/11046
C5-S
C8-S
C9.25-S
Specifications:
Optical Design
127mm(5") Schmidt-Cassegrain
203mm (8") Schmidt-Cassegrain
235mm (9.25") Schmidt-Cassegrain
Focal Length [250mm F/10 2032mm E/10 2350mm F/10
Finderscope 6x30 6x30 6x30
Mount CG-5 Equatorial CG-5 Equatorial CG-5 Equatorial
Eyepiece 25mm Plossl (50x) 25mm Plossl (81x) 25mm Plossl (94x)
Star Diagonal 1,25" 1.25" 1.25"
Accessory tray Yes Yes Yes
Tripod 2" Stainless Steel 2" Stainless Steel 2" Stainless Steel
Technical Specs
Highest Useful Magnication 300x 480x 555x
Lowest Useful Magnification 18x 29x 34x
Limiting Stellar Magnitude 13 14 14.4
Resolution: Rayleigh
I. larc seconds
.68 arc seconds
.59 arc seconds
Dawes Limit
91 arc seconds
37 arc seconds
49 arc seconds
Photographic Resolution
200 line/mm
200 line/mm
200 tine/mm
Light Gathering Power
329x unaided eye
843x unaided eye
[127% unaided eye
Field of View: standard eyepiece 19 ‚64° 55°
Linear FOV (@1000 yds) 52.5 ft. 33.6 ft. 29 ft.
Optical Coatings - Standard Starbright Coating Starbright Coating Starbright Coating
Secondary Mirror Obstruction 1.75" 2.7" 3.35"
by Area 12% 11% 13%
by Diameter 35% 34% 36%
Optical tube length 14 inches 17 inches 22 inches
Telescope Weight 48 155 54.5 165 73 lbs
Advanced GT
Additional Specifications
Hand Control
Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
Motor: Type
DC Servo motors with encoders, both axes
Max Slew Speed
3°/second
Software Precision
24bit, 0.08 arcsec calculation
Hand Control Ports RS-232 communication port on hand control
Motor Ports Aux Port, Autoguide Ports
Tracking Rates Sidereal, Solar and Lunar
Tracking Modes EQ North & EQ South
Alignment Procedures AutoAlign, 3-Star Alignment, Quick Align, Last Align
40,000+ objects, 400 user defined programmable objects,
Database Enhanced information on over 200 objects
Complete Revised NGC Catalog 7,840
Complete Messier Catalog 110
Complete IC Catalog 5,386
Complete Caldwell 109
Abell Galaxies 2,712
Solar System objects 9
Famous Asterisms 20
Selected CCD Imaging Objects 25
Selected SAO Stars 29,500
Total Object Database 45,492
52
Appendix B - Glossary of Terms
А-
Absolute magnitude
Airy disk
Alt-Azimuth Mounting
Altitude
Aperture
Apparent Magnitude
Arcminute
Arcsecond
Asterism
Asteroid
Astrology
Astronomical unit (AU)
Aurora
Azimuth
В -
Binary Stars
С -
Celestial Equator
Celestial pole
Celestial Sphere
Collimation
D -
Declination (DEC)
Е -
Ecliptic
Equatorial mount
Е -
Focal length
The apparent magnitude that a star would have if it were observed from a standard distance of 10
parsecs, or 32.6 light-years. The absolute magnitude of the Sun is 4.8. at a distance of 10 parsecs, it
would just be visible on Earth on a clear moonless night away from surface light.
The apparent size of a star's disk produced even by a perfect optical system. Since the star can never
be focused perfectly, 84 per cent of the light will concentrate into a single disk, and 16 per cent into
a system of surrounding rings.
A telescope mounting using two independent rotation axis allowing movement of the instrument in
Altitude and Azimuth.
In astronomy, the altitude of a celestial object is its Angular Distance above or below the celestial
horizon.
the diameter of a telescope's primary lens or mirror; the larger the aperture, the greater the
telescope's light-gathering power.
A measure of the relative brightness of a star or other celestial object as perceived by an observer on
Earth.
A unit of angular size equal to 1/60 of a degree.
A unit of angular size equal to 1/3,600 of a degree (or 1/60 of an arcminute).
A small unofficial grouping of stars in the night sky.
A small, rocky body that orbits a star.
The pseudoscientific belief that the positions of stars and planets exert an influence on human
affairs; astrology has nothing in common with astronomy.
The distance between the Earth and the Sun. It is equal to 149,597,900 km., usually rounded off to
150,000,000 km.
The emission of light when charged particles from the solar wind slams into and excites atoms and
molecules in a planet's upper atmosphere.
The angular distance of an object eastwards along the horizon, measured from due north, between
the astronomical meridian (the vertical line passing through the center of the sky and the north and
south points on the horizon) and the vertical line containing the celestial body whose position is to
be measured. .
Binary (Double) stars are pairs of stars that, because of their mutual gravitational attraction, orbit
around a common Center of Mass. If a group of three or more stars revolve around one another, it
is called a multiple system. It is believed that approximately 50 percent of all stars belong to binary
or multiple systems. Systems with individual components that can be seen separately by a telescope
are called visual binaries or visual multiples. The nearest "star" to our solar system, Alpha Centauri,
is actually our nearest example of a multiple star system, it consists of three stars, two very similar
to our Sun and one dim, small, red star orbiting around one another.
The projection of the Earth's equator on to the celestial sphere. It divides the sky into two equal
hemispheres.
The imaginary projection of Earth's rotational axis north or south pole onto the celestial sphere.
An imaginary sphere surrounding the Earth, concentric with the Earth's center.
The act of putting a telescope's optics into perfect alignment.
The angular distance of a celestial body north or south of the celestial equator. It may be said to
correspond to latitude on the surface of the Earth.
The projection of the Earth's orbit on to the celestial sphere. It may also be defined as "the apparent
yearly path of the Sun against the stars".
A telescope mounting in which the instrument is set upon an axis which is parallel to the axis of the
Earth; the angle of the axis must be equal to the observer's latitude.
The distance between a lens (or mirror) and the point at which the image of an object at infinity 18
brought to focus. The focal length divided by the aperture of the mirror or lens 1s termed the focal
ratio. |
53
J -
Jovian Planets
K -
Kuiper Belt
L -
Light-Year (LY)
M -
Magnitude
Meridian
Messier
N -
Nebula
North Celestial Pole
Nova
O -
Open Cluster
P-
Parallax
Parfocal
Parsec
Point Source
В -
Reflector
Resolution
Right Ascension: (RA)
S -
Schmidt Telescope
Sidereal Rate
Any of the four gas giant planets that are at a greater distance form the sun than the terrestrial
planets.
A region beyond the orbit of Neptune extending to about 1000 AU which is a source of many short
period comets.
A light-year is the distance light traverses in a vacuum in one year at the speed of 299,792 km/ sec.
With 31,557,600 seconds in a year, the light-year equals a distance of 9.46 X 1 trillion km (5.87 X 1
trillion mi).
Magnitude is a measure of the brightness of a celestial body. The brightest stars are assigned
magnitude 1 and those increasingly fainter from 2 down to magnitude 5. The faintest star that can be
seen without a telescope is about magnitude 6. Each magnitude step corresponds to a ratio of 2.5 in
brightness. Thus a star of magnitude | is 2.5 times brighter than a star of magnitude 2, and 100 times
brighter than a magnitude 5 star. The brightest star, Sirius, has an apparent magnitude of -1.6, the
full moon is -12.7, and the Sun's brightness, expressed on a magnitude scale, 1s -26.78. The zero
point of the apparent magnitude scale is arbitrary.
A reference line in the sky that starts at the North celestial pole and ends at the South celestial pole
and passes through the zenith. If you are facing South, the meridian starts from your Southern
horizon and passes directly overhead to the North celestial pole. |
A French astronomer in the late 1700”s who was primarily looking for comets. Comets are hazy
diffuse objects and so Messier cataloged objects that were not comets to help his search. This
catalog became the Messier Catalog, M1 through M110.
Interstellar cloud of gas and dust. Also refers to any celestial object that has a cloudy appearance.
The point in the Northern hemisphere around which all the stars appear to rotate. This 1s caused by
the fact that the Earth is rotating on an axis that passes through the North and South celestial poles.
The star Polaris lies less than a degree from this point and is therefore referred to as the "Pole Star".
Although Latin for "new" it denotes a star that suddenly becomes explosively bright at the end of its
life cycle.
One of the groupings of stars that are concentrated along the plane of the Milky Way. Most have an
asymmetrical appearance and are loosely assembled. They contain from a dozen to many hundreds
of stars.
Parallax is the difference in the apparent position of an object against a background when viewed by
an observer from two different locations. These positions and the actual position of the object form a
triangle from which the apex angle (the parallax) and the distance of the object can be determined 1f
the length of the baseline between the observing positions is known and the angular direction of the
object from each position at the ends of the baseline has been measured. The traditional method in
astronomy of determining the distance to a celestial object is to measure its parallax.
Refers to a group of eyepieces that all require the same distance from the focal plane of the
telescope to be in focus. This means when you focus one parfocal eyepiece all the other parfocal
eyepieces, in a particular line of eyepieces, will be in focus.
The distance at which a star would show parallax of one second of arc. It is equal to 3.26 light-years,
206,265 astronomical units, or 30,8000,000,000,000 km. (Apart from the Sun, no star lies within
one parsec of us.)
An object which cannot be resolved into an image because it to too far away or too small is
considered a point source. A planet is far away but it can be resolved as a disk. Most stars cannot
be resolved as disks, they are too far away.
A telescope in which the light is collected by means of a mirror.
The minimum detectable angle an optical system can detect. Because of diffraction, there is a limit
to the minimum angle, resolution. The larger the aperture, the better the resolution.
The angular distance of a celestial object measured in hours, minutes, and seconds along the
Celestial Equator eastward from the Vernal Equinox.
Rated the most important advance in optics in 200 years, the Schmidt telescope combines the best
features of the refractor and reflector for photographic purposes. It was invented in 1930 by
Bernhard Voldemar Schmidt (1879-1935).
This is the angular speed at which the Earth is rotating. Telescope tracking motors drive the
54
T -
Terminator
U-
Universe
V-
Variable Star
W -
Waning Moon
Waxing Moon
7 -
Zenith
Zodiac
telescope at this rate. The rate is 15 arc seconds per second or 15 degrees per hour.
The boundary line between the light and dark portion of the moon or a planet.
The totality of astronomical things, events, relations and energies capable of being described
objectively.
A star whose brightness varies over time due to either inherent properties of the star or something
eclipsing or obscuring the brightness of the star.
The period of the moon's cycle between full and new, when its illuminated portion 1s decreasing.
The period of the moon's cycle between new and full, when its illuminated portion 1s increasing.
The point on the Celestial Sphere directly above the observer.
The zodiac is the portion of the Celestial Sphere that lies within 8 degrees on either side of the
Ecliptic. The apparent paths of the Sun, the Moon, and the planets, with the exception of some
portions of the path of Pluto, lie within this band. Twelve divisions, or signs, each 30 degrees in
width, comprise the zodiac. These signs coincided with the zodiacal constellations about 2,000 years
ago. Because of the Precession of the Earth's axis, the Vernal Equinox has moved westward by
about 30 degrees since that time; the signs have moved with it and thus no longer coincide with the
constellations.
55
APPENDIX C
LONGITUDES AND
LATITUDES
ALABAMA
Anniston
Auburn
Birmingham
Centreville
Dothan
Fort Rucker
Gadsden
Huntsville
Maxwell AFB
Mobile
Mobile Aeros
Montgomery
Muscle Shoal
Selma
Troy
Tuscaloosa
ALASKA
Anchorage
Barrow
Fairbanks
Haines Hrbor
Homer
Juneau
Ketchikan
Kodiak
Nome
Sitka
Sitkinak
Skagway
Valdez
“ARIZOI
Davis-M AFB
Deer Valley
Douglas
Falcon Fid
Flagstaff
Fort Huachuc
Gita Bend
Goodyear
GrandCanyon
Kingman
Luke
Page
Payson
Phoenix
Prescott
Safford Awrs
Scotisdale
Show Low
Tucson
Williams AFB
Winslow
Yuma
Yuma Mcas
Yur
Blytheville
Camden
El Dorado
Fayetteville
Fi Smith
Harrison
Hot Springs
Jonesboro
Litile Rock
Pine Bluff
Springdale
Texarkana
Walnut Ridge
d
CA
Alturas
Arcata
Bakersfield
Beale AFB
Beaumont
Bicycle Lk
Big Bear
Bishop
Blue Canyon
- degrees
LONGITUDE
85
85
86
87
85
85
86
86
86
88
88
86
87
86
86
156
147
135
151
134
131
152
165
135
154
135
110
112
109
111
111
110
113
112
112
113
112
111
111
112
112
109
111
110
110
111
110
115
114
114
89
92
92
94
94
93
93
90
92
91
94
94
90
122
120
124
119
121
116
116
116
118
120
26.4
45
15
27
43.2
5.4
46.2
22.2
15
4.2
2.4
37.2
59.4
19.2
31.8
0.6
27
57
37.2
40.8
3.6
4.2
LATITUDE
min - degrees
10.2
40.8
27
28.2
7.8
36
33
25.2
57
16.2
31.8
55.8
13.8
25.8
39
49.2
37.2
16.2
Blythe
Burbank
Campo
Carlsbad
Castle AFB
Chico
China Lake
Chino
Concord
Crescent Cty
Daggett
Edwards AFB
El Centro
El Monte
El Toro
Eureka
Fort Hunter ’
Fort Ord
Fresno
Fullerton
George AFB
Hawthorne
Hayward
Imperial
imperial Bch
La Verne
Lake Tahoe
Lancaster
Livermore
Long Beach
Los Alamitos
Los Angeles
Mammoth
March AFB
Marysville
Mather AFB
Mcclellan
Merced
Miramar NAS
Modesto
Moffet
Mojave
Montague
Monterey
Mount Shasta
Mount Wilson
Napa
Needies
North ls
Norton AFB
Oakland
Ontario Int!
Oxnard
Palm Springs
Palmdale
Palo Alto
Paso Robles
Pillaro Pt
Point Mugu
Pt Arena
Pt Arguello
Pt Piedras
Red Bluff
Redding
Riverside
Sacramento
Salinas
San Carlos
San
Clemente
San Diego
San
Francisco
San Jose
San Luis Obi
San Mateo
San Miguel
Sandburg
Santa Ana
Santa Barb
Santa Maria
Santa Monica
Santa Rosa
56
LONGITUDE LATITUDE
degrees min degrees
114 43.2 33
118 22.2 34
116 28.2 32
117 16.8 33
120 34.2 37
121 51 39
117 40.8 35
117 37.8 33
122 3 37
124 13.8 41
116 46.8 34
117 52.8 34
115 40.8 32
118 1.8 34
117 43.8 33
124 16.8 41
121 19.2 36
121 46.2 36
119 43.2 36
117 58.2 33
117 22.8 34
118 19.8 33
122 7.2 37
115 34.2 32
117 7.2 32
117 46.8 34
120 0 38
118 13.2 34
121 49.2 37
118 9 33
118 3 33
118 24 33
118 55.2 37
117 16.2 33
121 34.2 39
121 1.8 38
121 2.4 38
120 31.2 37
117 9 32
120 57 37
122 3 37
118 9 35
122 31.8 41
121 51 36
122 19.2 41
118 4.2 34
122 16.8 38
114 37.2 34
117 1.2 32
117 13.8 34
122 13.2 37
117 37.2 34
119 1.2 34
116 3 33
118 7.8 35
122 7.2 37
120 37.8 35
122 49.8 37
119 7.2 34
124 13.2 39
121 7.2 34
121 16.8 35
122 15 40
122 1.8 40
117 27 33
121 3 38
121 3.6 36
122 15 37
117 37.2 33
117 7.8 32
122 22.8 37
121 55.2 37
120 39 35
117 34.8 33
120 2.4 34
118 43.8 34
117 52.8 33
119 49.8 34
120 27 34
118 27 34
122 49.2 38
min
37.2
12
37.2
7.8
22.8
46.8
40.8
58.2
58.8
46.8
52.2
54
49.2
4.8
40.2
19.8
40.8
46.2
52.2
34.8
55.2
39
49.8
34.2
54
43.8
42
49.2
46.8
55.8
37.8
52.8
34.2
40.2
16.8
52.2
37.8
25.2
43.8
34.8
19.2
13.8
13.2
46.2
42
43.8
12
49.8
28.2
40.2
49.8
7.2
34.8
57
40.2
30
57
31.2
40.2
31.2
25.2
49.2
37.2
22.2
13.8
22.8
1.8
45
40.2
25.8
54
1.2
31.2
LONGITUDE LATITUDE
degrees min degrees min
Shelter Cove 124 4.2 40 1.8
Siskiyou 122 28.2 41 46.8
Stockton 121 1b 37 54
Superior Val 117 0.6 35 19.8
Susanville 120 57 40 37.8
Thermal 116 10.2 33 37.8
Torrance 118 19.8 33 48
Travis AFB 121 55.8 38 16.2
Tahoe 120 7.8 39 19.2
Tustin Mcas 117 49.8 33 42
Ukiah 123 1.2 39 7.8
Van Nuys 118 28.8 34 13.2
Vandenberg 120 57 35 12
Visalia 119 2.4 36 192.
Air Force A 105 39 31.2
Akron 103 40 10.2
Alamosa 105 37 27
Aspen 106 39 13.2
Brmfield/Jef 105 39 54
Buckley 104 39 43.2
Colo Sprgs 104 38 49.2
Cortez 108 37 18
Craig-Moffat 107 40 30
Denver . 104 39 45
Durango 107 37 9
Eagle 106 39 39
Englewood 104 39 34.2
Fort Carson 104 38 40.8
Fraser 105 39 34.2
Ft Col/Lovel 105 40 27
Ft Collins 105 40 34.8
Grand Jct 108 39 7.2
Greeley-WId 104 40 25.8
Gunnison 106 38 33
La Junta 103 36 3
Lamar 102 38 7.2
Leadville 106 39 15
Limon 103 39 10.8
Montrose 107 38 30
Pueblo 104 38 16.8
Rifle 107 39 31.8
Salida 106 38 31.8
Trinidad 104 37 15
Winter Park 105 40 0
“CONNECTICUT =
Bridgeport
Danbury
Groton
Hartford
New Haven
New London
‘Windsor Loc
DELAWARE
Dover
Wilmington
D ASI
Washington
E
Apalachicola 85
Astor NAS 81
Avon Park G 81
Cape 80 28 28.2
Canaveral
Cecil 81 52.8 30 13.2
Crestview 86 31.2 30 46.8
Cross City 83 0.6 29 37.2
Daytona Bch 81 3 29 10.8
Duke Fld 86 31.2 30 39
Eglin AFB 86 31.8 30 28.8
Egmont Key 82 46.2 27 36
Fort Myers 81 52.2 26 34.8
Ft Lauderdale 80 9 26 4.2
Ft Myers 81 52.2 26 39
Gainesville 82 16.2 29 40.8
Homestead 80 22.8 25 28.8
Hurlburt Fid 86 40.8 30 25.8
Jacksonville 81 40.8 30 13.8
Key West 81 45 24 33
Lakeland 81 57 28 1.8
Macdill AFB 82 31.2 27 51
Marianna 85 10.8 30 50.4
Mayport NAS 81 25.2 30 24
LONGITUDE
Melbourne
Miami
Naples
Nasa Shuttle
Orlando
Panama City
Patrick AFB
Pensacola
Ruskin
Saint Peters
Sanford
Sarasota
Tallahassee
Tampa Intl
Titusville
Tyndall AFB
Vero Beach
West Palm
Beach
‘Whiting FId
Albany
Alma
Athens
Atlanta
Augusta/Bush
Brunswick
Columbus
Dobbins AFB
Fort Benning
Ft Stewart
Hunter Aaf
La Grange
Macon/Lewis
Moody AFB
Robins AFB
Rome/Russell
Valdosta
_Waycro
Barking San
Fr Frigate
Hito
Honolulu Int
Kahului Maui
Kaneohe Mca
Kilauea Pt
Lanai-Lanai
Lihue-Kauai
Maui
Molokai
Upolo PtLn
Waimea-
Burley
Chailis
Coeur
d'Alene
Eik City
Gooding
Grangeville
Idaho Falls
Lewiston
Malad City
Malta
Mccall
Mullan
Pocatello
Salmon
Soda Springs
Sun Valley
Aurora
Bistate Park
Bloomington
Bradford
Cairo
Carbondale
Centralia
Champaign
Chicago
Danville
DeKalb
Decatur
Du Page
Galesburg
degrees
80
80
81
80
81
85
80
87
82
82
81
82
84
. 82
80
- 85
80
80
87
160
166
155
157
156
158
159
156
159
156
157
156
156
113
114
116
115
115
116
112
117
112
113
116
115
112
113
411
min
37.8
16.8
4.8
40.8
19.2
40.8
3.6
19.2
3.6
40.8
15
33
22.2
31.8
4.8
34.8
25.2
7.2
1.2
10.8
31.2
19.2
25.2
58.2
22.8
55.8
31.2
34.2
4.2
39
1.2
3.6
10.2
16.8
1.8
28.2
4.2
55.8
25.8
16.8
40.2
57
21
49.8
0.6
28.2
7.2
46.2
13.2
49.2
25.8
10.2
7.8
4.2
1.2
18.2
22.2
0.6
4.8
3.6
54
34.8
... LATITUD
‘degrees
28
25
26
28
28
30
28
30
27
27
28
27
30
27
28
30
27
26
30
21
22
24
19
21
20
21
20
21
20
21
20
20
42
44
47
45
43
45
43
46
42
42
44
47
42
45
42
E
min
49.2
7.8
37.2
25.8
12
13.8
21
58.2
55.2
46.8
24
22.8
58.2
31.2
40.8
43.2
Glenview
NAS
Kankakee
Macomb
Marion
Marseilles
Mattoon
Moline/Quad
Mount
Vernon
Peoria
Quincy
Rockford
Salem
Scott AFB
Springfield
Sterling
Taylorville
alia
Bloomington
Elkhart
Evansville
Fort Wayne
Gary
Grissom AFB
indianapolis
Muncie
South Bend
Terre Haute
W Lafayette
10}
Burlington
Cedar Rapids
Des Moines
Dubuque
Estherville
Fort Dodge
Lamoni
Mason City
Ottumwa
Sioux City
Spencer
Waterloo Mun
Chanute
Col. J Jabar
Concordia
Dodge City
Eikhart
Emporia
Ft Leavnwrth
Ft Riley
Garden City
Goodland
Hays
Hill City
Hutchinson
Johnson Cnty
Liberal
Manhatten
Mcconnell Af
Medicine Ldg
Olathe
Russell
Salina
Topeka
Topeka/Forbe
Wichit
Bowling Gren
Ft Campbell
Ft Knox
Jackson
Lexington
London
Louisville
Owensboro
Paducah
Pikeville
Alexandria
Barksdale
Baton Rouge
Boothville
Cameron Heli
Claiborne R
England AFB
Eugene ls.
Fort Polk
LONGITUDE
degrees
87
87
90
89
88
88
90
88
89
91
89
88
89
89
89
89
86
86
86
87
85
87
86
86
85
86
87
86
91
93
90
94
94
93
93
92
96
95
92
95
97
97
99
101
96
94
96
100
101
99
99
97
94
100
96
97
98
94
98
97
95
95
97
86
87
85
83
85
84
85
87
88
82
92
93
91
89
93
92
92
91
93
57
LATITUDE
min degrees
49.2
51
39.6
0
40.8
16.8
31.2
51.6
40.8
1.2
0.6
57.6
51
40.2
40.2
19.8
42
41
40
37
41
39
41
38
40
39
42
38
38
39
41
39
min
4.8
4.2
31.2
45
22.2
28.8
19.2
40.2
46.2
19.8
22.2
55.8
22.2
51
22.8
4.2
49.2
37.2
18
51
52.2
48
4.2
57
39
58.2
40.2
54
36
4.8
13.8
22.8
30
31.8
33
46.8
13.2
19.8
28.2
ter
Ann Arbor
Battle Creek
Benton
Harbor
Chippewa
Coopersville
Copper Harb
Detroit
Escanaba
Flint/Bishop
Grand Rapids
Hancock
Harbor Beach
Houghton
Lake
Iron Mtn
Ironwood
Jackson
Kalamazoo
Lansing
Manistee
Marquette
Menominee
Muskegon
Peliston
Pontiac
Saginaw
Sault Ste M
Sawyer AFB
Selfridge
Seul Choix
Traverse Cty
min
4.2
2.4
39
7.2
0
13.2
0.6
1.2
16.8
55.2
1.8
58.2
3.6
16.6
7.2
37.2
4.2
58.2
10.8
31.2
10.8
55.6
43.2
31.8
52.2
-- LONGITUDE...
degrees
Grand Isle 90
High Island 94
Houma a0
Intercoastal 92
Lafayette 92
Lake Charles 93
Lk Palourde 91
Missippi Can 89
Monroe 92
Morgan City 91
New Iberia 91
New Orleans 90
S Marsh lsl 91
Shreveport 93
_Slidel _ 89
Augusta
Bangor
Bar Harbor 68
Brunswick 69
Caribou Mun 68
Greenville 69
Houiton 67
Loring AFB 67
Portland 70
Presque Isle 68
Rockland 69
Rumford
(MARYLAN
Andrews AF
Baltimore
Fort Meade
Hagerstown
Ocean City
Patuxent
Phillips
Salisbury
MASSACHUSETT:
Bedford 71
Beverly 70
Boston 71
Cape Cod 70
Chatham 69
Fort Devens 71
Hyannis 70
Lawrence 71
Marthas Vine 70
Nantucket 70
New Bedford 70
Norwood 71
Otis ANGB 70
Pittsfield 73
S Weymouth 70
Westfield 72
Westover 72
_Worces 71
13.8
25.8
28.2
57
51
4.8
45
31.2
31.8
40.8
7.2
7.8
28.2
33
15
57
37.8
15
4.8
25.2
4.8
22,2 .
2.4
49.8
55.2
34.8
29
28
29
29
30
30
29
28
32
29
30
29
28
32
44
44
44
43
46
45
46
46
43
46
44
42
42
42
41
41
42
41
42
41
41
41
42
41
42
42
42
42
42
42
42
46
43
47
42
45
42
42
47
43
44
45
46
42
42
42
44
46
45
43
45
42
43
46
46
42
45
44
LATITUDE
‘degrees
min
10.8
7.8
34.2
43.8
12
7.2
42
46.8
31.2
42
1.8
58.8
18
31.2
48
27
52.8
52.2
27
7.8
57
39
40.8
4.2
52.8
10.8
4.8
42
33
16.8
28.2
19.8
28.2
34.8
22.2
46.8
40.2
34.2
40.2
43.2
24
15
40.8
10.8
39
15.6
10.2
12
16.2
13.2
18
7.8
15
4.2
28.2
25.2
43.8
58.2
52.8
10.2
49.8
22.2
49.2
31.8
16.2
13.8
46.2
16.2
52.8
7.2
10.2
34.2
40.2
31.8
28.2
37.2
55.2
43.8
© LONGITUDE
““ degrees
Wurtsmith
Alexandria
Bemidji Muni
Brainerd-Crw
Detroit Laks
Duluth
Ely
Fairmont
Fergus Falls
Grand Rapids
Hibbing
Intl Falls
Litchfield
Mankato
Marshall Arpt
Minneapolis
Park Rapids
Pequot Lake
Rochester
Saint Paul
St Cloud
Thief River
Tofte
Warroad
Worthington
Columbus
AFB
Golden Trian
Greenville
Greenwood
Gulfport
Hattiesburg
Jackson
Keesler AFB
Laurel
Mccomb
Meridian NAS
Meridian/Key
Natchez
Oxford
Tupel
Columbia
Cape
Girardeau
Ft Leonard
Jefferson City
Joplin
Kansas City
Kirksville
Monett
Muskogee
Poplar Bluff
Richards-Geb
Spickard
Springfield
St Joseph
St Louis
Vichy/Rolla
West Plains
Whiteman
Bozeman
Broadus
Butte
Cut Bank
Dillon
Drummond
Glasgow
Glendive
Great Falls
Harlowton
Havre
Helena
Jordan
Kalispell
Lewiston
Livingston
Maimstrom
Miles City
Missoula
Monida
Sidney
W Yellowston
83
83
88
88
90
90
89
90
88
89
90
88
88
91
89
92
89
92
92
94
94
92
94
95
90
94
93
93
95
90
91
92
93
111
105
112
112
112
113
106
104
111
109
109
112
106
114
109
110
111
105
114
112
104
111
2.4
31.8
55.8
7.8
52.8
10.8
49.2
25.2
13.2
34.8
7.8
10.2
43.2
33
21
21.6
28.2
33
43.2
22.8
31.8
22.2
46.2
25.2
33
— LATITUDE.
min. degrees
44
42
44
46
46
43
44
45
48
47
48
43
33
33
33
33
31
32
30
31
31
32
32
31
34
38
37
37
38
37
39
40
37
35
36
38
40
37
40
38
38
37
38
45
45
45
48
45
46
48
47
47
46
48
46
47
48
47
45
47
46
46
44
47
44
49.8
55.2
55.8
33
4.2
34.8
55.8
39
43.8
46.8
40.2
57
36
15
40.2
13.2
7.8
28.8
25.8
33
19.8
18
42
30
25.8
55.2
34.2
43.2
39
NE
Yucca Flat
Berlin
Atlantic
Ainsworth
Alliance
Beatrice
Broken Bow
Burwell
Chadron
Columbus
Cozad
Falls City
Grand island
Hastings
Imperial
Kearney
Lincoln Muni
Mecook
Muilen
Norfolk
North Omaha
North Platte
O'neill
Offutt AFB
Omaha
Ord/Sharp
Scottsbluff
Sidney Muni
Valentine
Austin
Battle Mtn
Caliente
Elko
Ely/Y elland
Eureka
Fallon NAS
Hawthorne
ind Sprng Rn
Las Vegas
Lovelock
Mercury
Nellis AFB
Owyhee
Reno
Tonopah
Wildhorse
Winnemucca
Concord
Jaffrey
Keene
Laconia
Lebanon
Manchester
Mt Washingtn
Nashua
Pease AFB
Wolfeboro
N
Barnegat Ls
Fairfield
Lakehurst
Mcguire AFB
Millville
Morristown
Newark Inti
Teterboro
Albuquerqu
Cannon
Carlsbad
Clayton Arpt
Corona
Deming
Farmington
Galtup/Clark
Grants
Hobbs
Holioman
AFB
Las Cruces
Las Vegas
Los Alamos
Moriarity
Northrup Str
Raton
Roswell
101
100
101
97
96
100
98
95
95
98
103
102
100
117
116
114
115
114
115
118
118
115
115
118
116
115
116
119
117
116
117
116
106
103
104
103
105
107
108
108
107
103
106
106
105
106
106
106
104
104
58
58.8
10.2
55.2
1.2
1.8
10.2
46.8
4.8
15
4.8
4.8
46.2
16.8
2.4
31.8
LATITUDE
34.2
37.8
55.8
16.2
46.8
4.8
16.8
52.2
22.8
19.8
27
15
45
31.2
10.2
40.8
51
18
39
52.8
58.8
54
44.4
18
e degrees.
Santa Fe
Silver City
Socorro
Taos
Truth Or Con
Tucumcari
White Sands
Albany
Ambrose
Binghamton
Buffalo
Dansville
Elmira
Farmingdale
Fort Drum
Glens Falls
Griffiss AFB
Islip
Ithaca
Jamestown
Massena
Monticello
New York
Newburgh
Niagara Fall
Ogdensburg
Oneonta
Plattsburgh
Rochester
Saranac Lk
Schenectady
Syracuse
Utica
Watertown
Westhampton
Pl
Whi
Asheville
Cape Hattera
Charlotte
Cherry Point
Dare Co Gr
Diamond Sho
Elizabeth
Fayetteville
Fort Bragg
Greensboro
Hickory
Hot Springs
Jacksonville
Kinston
Mackall Aaf
Manteo Arpt
New Bern
New River
Pope AFB
Raleigh-Durh
Rocky Mt
Southern Pin
Wilmington
Winston-
Salem
Devil's Lake
Dickenson
Fargo
Grand Forks
Jamestown
Lidgerwood
Minot
Roseglen
Athens
Canton
Cincinnati
Cleveland
Columbus
Dayton
Findlay
Mansfield
Rickenbacker
Toledo
Willoughby
Youngstown
Zanesville
106
108
106
105
107
103
106
73
74
75
78
78
76
73
75
73
75
73
76
79
74
74
73
74
78
75
75
73
77
74
° 73
76
75
76
72
13
82
75
80
76
76
75
76
78
78
79
81
82
77
77
79
75
77
77
79
78
77
79
77
80
102
96
97
98
97
101
DE
LATITUDE...
4.8
10.2
5.4
34.2
16.2
3.6
2.4
4.8
22.2
58.8
43.8
10.8
40.8
16.8
13.8
25.8
40.2
40.8
52.8
1.2
40.2
31.2
55.8
4.8
2.4
40.2
5.4
min: degrees
35
32
34
36
33
35
32
42
40
42
42
42
42
40
44
43
43
40
42
42
44
41
40
41
43
44
42
44
43
44
42
43
43
44
40
41
35
35
35
34
36
35
36
35
35
36
35
35
34
35
35
35
35
34
35
35
35
35
34
36
39
40
39
41
40
41
40
39
41
41
41
39
“min
37.2
37.8
4.2
25.2
13.8
10.8
37.8
45
45
13.2
55.8
58.2
10.2
43.8
21
13.8
46.8
28.8
95.6
42
46.2
30
40.8
52.2
39
7.2
22.8
25.8
16.2
13.2
54
7.8
15
16.2
7.8
4.8
45
54
49.2
19.2
1.8
55.2
4.8
42
10.2
52.2
51
14.4
16.2
7.8
49.2
37.8
16.2
57
- LONGITUDE ~~ LATITUDE ~~ LONGITUD — LATITUDE LONGITUDE : ... LATITUDE
degrees... min degrees i - degrees. . min degrees min degrees min degrees min
OKLAHOMA >>> Myrtle Beach 78 55.8 33 San Angelo 100 3 31 22.2
Altus AFB 99 16.2 34 40.2 Shaw AFB 80 28.2 33 San Antonio 98 28.2 29 31.8
Ardmore 97 1.2 34 18 Spartanburg 81 57.6 34 Sanderson 102 25.2 30 10.2
Bartlesville 96 0 36 45 ‘SOUTH DAKOTA South Brazos 95 52.2 28 1.8
Clinton 99 1.2 35 21 Aberdeen 25.8 45 27 Stephenville 98 10.8 32 13.2
Enid 97 4.8 36 22.8 Brookings 4.8 44 18 Temple 97 252 31 9
Fort Sili 98 2.4 34 - 39 Chamberlain 19.2 43 48 Tyler/Pounds 95 2.4 32 22.2
Gage 99 46.2 36 18 Custer 103 3.6 43 46.2 Victoria 96 55.2 28 51
Hobart 99 3 35 0 Ellsworth 103 0.6 44 9 Wichita Flis 98 3 33 58.8
Lawton 98 25.2 34 34.2 Huron 98 13.2 44 22.8 Wink 103 1.2 31
Mcalester 95 46.8 34 52.8 Lemmon 102 10.2 45 55.8 ‘UTAH 0
Norman 97 28.2 35 13.8 Mitchell 98 1.8 43 46.2 Blanding 109 46.8 38 1.8
Oklahoma 97 3.6 35 24 Mobridge 100 25.8 45 31.8 Bullfrog Mar 110 4.2 37 30
Page 94 37.2 34 40.8 Philip 101 3.6 44 3 Cedar City 113 0.6 37 42
Ponca City 97 0.6 36 43.8 Pierre 100 16.8 44 22.8 Delta 112 34.8 39 19.8
Stillwater 97 54 36 9.6 Rapid City 103 4.2 44 3 Eagle Range 113 4.2 41 3
т Tinker AFB 97 22.8 35 25.2 Redig 103 19.2 45 9.6 Green River 110 9 39 0
ne Tulsa 95 5.4 36 12 Sioux Falls 96 43.8 43 34.8 Hanksville 110 43.2 38 22.2
Vance AFB 97 55.2 36 19.8 Watertown Hill AFB 111 58.2 41 7.2
OREGON | Yankton Logan 111 51 41 46.8
Astoria TENNESSEE Milford 113 1.8 38 43.2
Aurora Bristol Moab 109 45 38 46.2
Baker 117 49.2 44 49.8 Chattanooga Ogden 112 1.2 41 10.8
Brookings 124 28.2 42 4.8 Clarksville 87 25.2 36 37.2 Price/Carbon 110 45 39 37.2
Burns Arpt 118 57 43 36 Crossville 85 4.8 35 57 Provo 111 43.2 40 13.2
Cape Blanco 124 57 43 22.8 Dyersburg 89 2.4 36 1.2 Roosevelt 110 37.8 40 30
Cascade 121 52.8 45 40.8 Jackson 88 55.2 35 36 Saint George 113 3.6 37 4.8
Corvallis 123 16.8 44 30 Knoxville 83 58.8 35 49.2 Salt Lake Ct 411 58.2 40 46.8
Eugene 123 13.2 44 7.2 Memphis Int! 90 0 35 3 Tooele 112 1.2 40 10.2
Hillsboro 122 57 45 31.8 Monteagle 85 30.6 35 9 Vernal 109 31.2 40 27
Klamath Fali 121 43.8 42 9 Nashville 86 40.8 36 7.2 Wendover 114 3 41 132
La Grande 118 0 45 16.8 0 "VERMONT > _ о
Lake View 120 21 42 10.8 TEXAS о Burlington
Meacham 118 2.4 45.. 30 Abilene 99 40.8 32 25.2 Montpelier
Medford 122 52.2 42 22.2 Alice 98 1.8 27 43.8 Newport
Newport 124 3 44 37.8 Amarillo 101 4.2 35 13.8 Rutland 73 57 43 31.8
North Bend 124 15 43 25.2 Austin 97 4.2 30 18 St Johnsbury 72 1.2 44 25.2
Ontario 117 1.2 44 1.2 Bergstrom Af 97 40.8 30 12 Wilmington 52.8 42
Pendieton 118 51 45 40.8 Big Sky 101 28.8 32 234 VIRGINIA © EEE
Portland 122 3.6 45 36 Big Spring 101 27 32 18 Charlottes 38
Redmond 121 9 44 16.2 Brownsville 97 25.8 25 54 Chesapeake 76 1.2 37
Roseburg 123 22.2 43 13.8 Brownwood 98 57.6 31 47.4 Danville 79 19.8 36 34.2
Salem 123 0 44 55.2 Carswell AFB 97 25.8 32 46.8 Fort Belvoir 77 10.8 38 43.2
Sexton 123 22.2 42 37.2 Chase NAS 97 40.2 28 22.2 Fort Eustis 76 37.2 37 7.8
The Dalles 121 9 45 37.2 Childress 100 16.8 34 25.8 Hot Springs 79 49.2 37 57
Troutdale Coliege Stn 96 22.2 30 34.8 Langley AFB 76 22.2 37 4.8
PENNSYLVANIA Corpus Chrst 97 3 27 46.2 Lynchburg 79 1.2 37 19.8
Allentown Cotulla 99 13.2 28 27 Newport 76 3 37 7.8
Altoona Dalhart 102 33 36 1.2 News
Beaver Falls Dallas/FW 97 1.8 32 54 Norfolk NAS 76 16.8 36 55.8
Blairsville Del Rio 100 55.2 29 22.2 Norfolk Rgni 76 1.2 36 54
Bradford Dyess AFB 99 51 32 25.8 Oceana NAS 76 1.8 36 49.2
Dubois El Paso 106 2.4 31 48 Quantico Mca 77 1.8 38 30
Erie Ellington Af 95 10.2 29 37.2 Richmond 77 19.8 37 30
Franklin Fort Worth 97 21 32 49.2 Roanoke 79 58.2 37 19.2
Harrisburg Ft Hood Aaf 97 43.2 31 9 Muni
Johnstown Galveston 94 52.2 29 16.2 Staunton 78 38 16.2
Lancaster Gray AFB 97 49.8 31 4.2 Volens
Latrobe Greenville 96 4.2 33 4.2 Wallops Sta ——
Middletown Guadalupe 104 4.8 31 49.8 ‘WASHINGTON
Muir Harlingen 97 40.2 26 13.8 Bellingham
Nth Philadel Hondo 99 10.2 29 21 Bremerton 122 46.2 47 28.8
Philadelphia Houston 95 21 29 58.2 Burlington 122 19.8 48 30
Philipsburg Junction 99 46.2 30 30 Colville 118 28.2 48 52.8
Pittsburgh Kelly AFB 98 34.8 29 22.8 Ephrata 119 31.2 47 19.2
Reading Kerrville 99 4.8 29 58.8 Everet/Paine 122 16.8 47 55.2
Site R Killeen 97 40.8 31 4.8 Fairchild 117 39 47 37.2
State Colleg Kingsville 97 49.2 27 30 Fort Lewis 122 34.8 47 4.8
Wilkes-Barre Laredo Intl 99 28.2 27 31.8 Hanford 119 3.6 46 34.2
Williamsport Laughlin AFB 100 46.8 29 22.2 Hoquiam 123 58.2 46 58.2
Willow Grove. Longview 94 43.2 32 22.8 Mcchord AFB 122 28.8 47 9
Lubbock 101 49.2 33 39 Moses Lake 119 19.2 47 12
Block Island 71 34.8 41 10.2 Lufkin 94 45 31 13.8 Oak Harbor 122 40.8 48 15
Nth Kingston 71 25.2 41 36 Marfa 104 1.2 30 22.2 Olympia 122 5.4 46 58.2
Providence... — 41 43.8 Mcallen 98 13.8 26 10.8 Omak 119 31.8 48 25.2
Midland 102 10.8 31 57 Pasco 119 7.2 46 16.2
Anderson 82 43.2 34 30 Mineral Wils 98 4.2 32 46.8 Port Angeles 123 3 48 7.2
Beaufort 80 43.2 32 28.8 Palacios 96 15 28 43.2 Puliman 117 7.2 46 45
Charleston 80 1.8 32 54 Paris/Cox 95 27 33 37.8 Quillayute 124 33 47 57
Columbia 81 7.2 33 57 Plainview 101 42.6 34 10.2 Renton 122 13.2 47 30
Florence 79 43.2 34 10.8 Port Arthur 94 1.2 30 34.8 Seattle 122 1.8 47 27
Greenville 82 21 34 51 Reese AFB 102 3 33 36 Shelton 123 9 47 15
Mcentire 80 4.8 33 55.2 Rockport 97 1.8 28 4.8 Spokane 117 31.8 47 37.8
Tacoma 122 34.8 47 16.2
Toledo 122 4.8 46 28.8
59
60
LONGITUDE LATITUDE LONGITUDE = ~~ LATITUDE. LONGITUDE - ~~ LATITUDE
degrees min degrees min ЩЕ —. min: degrees o degrees min - de
Walla Walla 118 16.8 46 6 WISCONSIN WYOMIN
Wenatchee 120 1.2 47 24 Appleton 88 31.2 44 15 Big Piney 110 0.6 42 34.2
Whidbey Is 122 39 48 21 Eau Claire 91 28.8 44 52.2 Casper 106 28.2 42 55.2
Yakima 120 8 46 34.2 Green Bay 88 7.8 44 28.8 Cheyenne 104 49.2 41 9
WEST VIRGINIA о о Janesville 89 1.8 42 37.2 Cody 109 1.2 44 31.2
Beckley 81 7.2 37 46.8 La Crosse 91 15 43 52.2 Douglas 105 22.8 42 45
Bluefield 81 13.2 37 18 Lone Rock 90 10.8 43 12 Evanston 111 0 41 19.8
Charleston 81 3.6 38 22.2 Madison 89 19.8 43 7.8 Gillette 105 31.8 44 21
Clarksburg 80 13.8 39 16.8 Manitowac 87 40.2 44 7.8 Jackson 110 43.8 43 36
Elkins 79 51 38 52.8 Milwaukee 87 5.4 42 57 Lander 108 43.8 42 49.2
Huntington 82 33 38 22.2 Mosinee 89 40.2 44 46.8 Laramie 105 40.8 41 19.2
Lewisburg 80 2.4 37 52.2 Neenah 88 31.8 44 13.2 Moorcroft 104 48.6 44 21
Martinsburg 77 58.8 39 24 Oshkosh 88 34.2 44 0 Rawlins 107 1.2 41 48
Morgantown 79 55.2 39 39 Rhinelander 89 27 45 37.8 Riverton 108 27 43 3
Parkersburg 81 25.8 39 21 Rice Lake 91 43.2 45 28.8 Rock Springs 109 4.2 41 36
Wheeling 80 39 40 10.8 Volk Fld 90 16.2 43 55.8 Sheridan 106 58.2 44 46.2
Wh Sulphur 80 1.2 37 27.6 Wausau 89 37.2 44 55.2 Worland 107 58.2 43 58.2
Yellowstone 110 25.2 44 33
CANADA
CITY PROVINCE LONGITUDE LATITUDE CITY COUNTRY LONGITUDE LATITUDE -
Calgary Alberta 114 7 51 14 Glasgow Scotland 4 15w 55 50n
Churchill Newfoundland 94 0 58 45 Guatemala City Guatemala 90 31 w 14 37n
Coppermine Northwest Terr. 115 21 67 49 Guayaquil Ecuador 79 56 w 2 10s
Edmonton Alberta 113 25 53 34 Hamburg Germany 10 2e 53 33n
Frederickton New Brunswick 66 40 45 57 Hammerfest Norway 23 38 e 70 38n
Ft Mcpherson Northwest Terr 134 50 67 29 Havana Cuba 82 23w 23 8n
Goose Bay Newfoundland 60 20 53 15 Helsinki Finland 25 0e 60 10n
Halifax Nova Scotia 63 34 44 39 Hobart Tasmania 147 19e 42 52s
Hazelton BC 127 38 55 15 iquique Chile 70 7w 20 10s
Kenora Ontario 94 29 49 47 Irkutsk Russia 104 20e 52 30n
Labrador City Labrador 66 52 52 56 Jakarta Indonesia 106 48 e 6 16s
Montreal Quebec 73 39 45 32 Johannesburg South Africa 28 4е 26 12 5
Mt. Logan Yukon 140 24 60 34 Kingston Jamaica 76 49 w 17 San
Nakina Yukon 132 48 59 12 La Paz Bolivia 68 22 W 16 27s
Ottawa Ontario 75 45 45 18 Leeds England 1 30 w 53 45n
Peace River Alberta 117 18 56 15 Lima Peru 77 2w 12 Os
Pr. Edward Isl Nova Scotia 63 9 46 14 Liverpool England 3 Ow 53 25n
Quebec Quebec 71 15 46 50 London England 0 5 w 51 32n
Regina Saskatchewan 104 38 50 30 Lyons France 4 50 e 45 45n
Saskatoon Saskatchewan 101 32 52 10 Madrid Spain 3 42 w 40 26 n
St. Johns Newfoundiand 52 43 47 34 Manchester England 2 15 w 53 30n
Toronto Ontario 79 23 43 39 Manila Phillipines 120 57e 14 35n
Vancouver BC 123 7 49 16 Marseilles France 5 20e 43 20n
Victoria BC 123 20 48 26 Mazatlan Mexico 106 25w 23 12n
Whitehorse Yukon 135 3 60 43 Mecca Saudi Arabia 39 45e 21 23n
Winnipeg Manitoba 97 g 49 53 Melbourne Australia 144 58 e 37 47 s
INTERNA TIONAL Mexico City Mexico 99 7w 19 26n
Milan Italy 9 10e 45 27n
Montevideo Uruguay 56 10w 34 538
Aberdeen Scotland 2 9 w 57 9n Moscow Russia 37 36 e 55 45n
Adelaide Australia 138 36e 34 55s Munich Germany 11 35e 48 8n
Amsterdam Holland 4 53e 52 22Nn Nagasaki Japan 129 57 e 32 48n
Ankara Turkey 32 55e 39 55n Nagoya Japan 136 56 e 35 7n
Asuncion Paraguay 57 40 w 25 15s Nairobi Kenya 36 55 е 1 25s
Athens Greece 23 43 e 37 58n Nanjing China 118 53e 32 3n
Auckland New Zealand 174 45 e 36 52s Naples italy 14 15e 40 50n
Bangkok Thailand 100 30e 13 45n Newcastle England 1 37W 54 58n
Barcelona Spain 2 9e 41 23n Odessa Ukraine 30 48 e 46 27n
Belém Brazil 48 29 w 1 28s Osaka Japan 135 30e 34 32n
Belfast Northern Ireland 5 56 w 54 37n Oslo Norway 10 42 e 59 57n
Belgrade Yugoslavia 20 32e 44 52n Panama City Panama 79 32 \м 8 58n
Berlin Germany 13 25e 52 30n Paramaribo Surinam 55 15w 5 45n
Birmingham England 1 55 w 52 26n Paris France 2 20 e 4 48n
Bombay India 72 48 e 19 On Beijing China 116 256 39 55n
Bordeaux France 0 31 w 44 sûn Perth Australia 115 52 е 31 57s
Bremen Germany 8 49 e 53 an Plymouth England 4 5 w 50 25n
Brisbane Australia 153 Se 27 29s Rio de Janeiro Brazil 43 12w 22 57 $
Bristol England 2 35 w 51 28n Rome Italy 12 27 e 41 54 n
Brussels Belgium 4 22e 50 52n Salvador Brazit 38 27 W 12 56s
Bucharest Romania 26 7e 44 25n Santiago Chile 70 45 w 33 28s
Budapest Hungary 19 5e 47 30n St. Petersburg Russia 30 18e 59 56n
Buenos Aires Argentina 58 22 W 34 35s Sao Paulo Brazil 46 31w 23 31s
Cairo Egypt 31 21e 30 2n Shanghai China 121 28 e 31 10 n
Canton China 113 15e 23 7n Sofia Bulgaria 23 20e 42 40n
Cape Town South Africa 18 22e 33 55 s Stockhoim Sweden 18 3e 59 17n
Caracas Venezuela 67 2w 10 28n Sydney Australia 151 Oe 34 Os
Chihuahua Mexico 106 5w 28 З/п Tananarive Madagascar 47 33e 18 50s
Chongqing China 106 34 e 23 46n Teheran Iran 51 45 e 35 45n
Copenhagen Denmark 12 34e 55 40n Tokyo Japan 139 45e 35 40n
Cordoba Argentina 64 10 w 31 285 Tripoli Libya 13 12e 32 57n
Darwin Australia 130 ble 12 28s Venice italy 12 20e 45 26n
Dublin Ireland 6 15w 53 Z0n Veracruz Mexico 96 10w 19 10n
Durban South Africa 30 53e 29 53s Vienna Austria 16 20e 48 14
Edinburgh Scotland 3 10w 55 B55n Warsaw Poland 21 Oe 52 14 n
Frankfurt Germany 8 41 e 50 7n Wellington New Zealand 174 47 e 41 17s
Georgetown Guyana 58 15 w 6 45n Zúrich Switzerland 8 31e 47 21n
Appendix D - RS-232 Connection
You can control your telescope with a computer via the RS-232 port on the computerized hand control and using an
optional RS-232 cable (#93920). Once connected, the telescope can be controlled using popular astronomy software
programs.
Communication Protocol:
The Advanced GT communicates at 9600 bits/sec, No parity and a stop bit. All angles are communicated with 16 bit
angle and communicated using ASCII hexadecimal.
Description | PC Command ASCII | Hand Control Response | Notes
Echo Kx X# Useful to check communication
Goto Azm-Alt B12AB, 4000 # 10 characters sent. B=Command,
12AB=Azm, comma, 4000=Alt. If
command conflicts with slew limits,
there will be no action.
Goto Ra-Dec R34AB, 12CE # Scope must be aligned. If
command conflicts with slew limits,
there will be no action.
Get Azm-Alt Z 12AB, 40004 10 characters returned,
| 12AB=Azm, comma, 4000=Alt, #
Get RA-Dec E 34AB, 12CE# Scope must be aligned
Cancel Goto M #
Is Goto in Progress L O# or 1# O=No, 1=Yes; "0" is ASCII
character zero
Is Alignment Complete J O# or 1# O=No, 1=Yes
Commands below
available on version 1.6
or later
HC version V 22 Two bytes representing V2.2
Stop/Start Tracking TX # Alt-Az tracking requires alignment
x = 0 (Tracking off)
x = 1 (AIt-AZ on)
x = 2 (EQ-N)
x = 3 (EQ-S)
32-bit goto RA-Dec r34AB0500,12CE0500 #
32-bit get RA-Dec
e
34AB0500,12CE0500#
The last two characters will always
be zero.
Commands below
available on version 2.2
or later
32-bit goto Azm-Alt
b34AB0500,12CE0500
#
32-bit get Azm-Alt
Z
34AB0500,12CE0500#
The last two characters will always
be zero.
The cable required to interface to the telescope
has an RS-232 male plug at one end and a 4-4
telephone jack at the other end. The wiring is
as follows:
4-4 Modular
Phone Jack
/
/
DB9 Pin 3 J
PC Transmit
DB9 Pin 5
Ground
DB9 Pin?
PC Receive
61
Additional RS232 Commands
Send Any Track Rate Through RS232 To The Hand Control
1. Multiply the desired tracking rate (arcseconds/second) by 4. Example: if the desired trackrate is 150
arcseconds/second, then TRACKRATE = 600
2. Separate TRACKRATE into two bytes, such that (TRACKRATE = TrackRateHigh*256 +
rackRateLow). Example: TrackRateHigh =2 TrackRateLow = 88
3. To send a tracking rate, send the following 8 bytes:
a. Positive Azm tracking: 80, 3, 16, 6, TrackRateHigh, TrackRateLow, 0, 0
b. Negative Azm tracking:80, 3, 16, 7, TrackRateHigh, TrackRateLow, 0, 0
c. Positive Alt tracking: 80, 3, 17, 6, TrackRateHigh, TrackRateLow, 0, 0
d. Negative Alt tracking: 80, 3, 17, 7, TrackRateHigh, TrackRateLow, 0, 0
4. The number 35 is returned from the handcontrol
Send A Slow-Goto Command Through RS232 To The Hand Control
(note: Only valid for motorcontrol version 4.1 or greater)
1. Convert the angle position to a 24bit number. Example: if the desired position 1s 220°, then
POSITION 24BIT = (220/360)*2** = 10,252,743 |
2. Separate POSITION 24BIT into three bytes such that (POSITION 24BIT = PosHigh*65536 +
PosMed*256 + PosLow). Exampe: PosHigh = 156, PosMed = 113, PosLow = 199
3. Send the following $ bytes:
a. Azm Slow Goto: 80, 4, 16, 23, PosHigh, PosMed, PosLow, 0
b. Alt Slow Goto: 80, 4, 17,23, PosHigh, PosMed, PosLow, 0
4. The number 35 15 returned from the handcontrol
Reset The Position Of Azm Or Alt
1. Convert the angle position to a 24bit number, same as Slow-Goto example.
2. Send the following 8 bytes:
a. Azm Set Position: 80, 4, 16, 4, PosHigh, PosMed, PosLow, 0
b. Alt Set Position: 80, 4, 17, 4, PosHigh, PosMed, PosLow, 0
3. The number 35 1s returned from the handcontrol
4. Note: Ifusing Motorcontrol version less than 4.1, then send:
a. Azm Set Position: 80, 3, 16, 4, PosHigh, PosMed, PosLow, 0
b. Alt Set Position: 80, 3, 17, 4, PosHigh, PosMed, PosLow, 0
62
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70
CELESTRON TWO YEAR WARRANTY
A. Celestron warrants this telescope to be free from defects in materials and workmanship for two years. Celestron will repair or
replace such product or part thereof which, upon inspection by Celestron, is found to be defective in materials or workmanship.
As a condition to the obligation of Celestron to repair or replace such product, the product must be returned to Celestron
together with proof-of-purchase satisfactory to Celestron.
В. The Proper Return Authorization Number must be obtained from Celestron in advance of return. Call Celestron at (310) 328-
9560 to receive the number to be displayed on the outside of your shipping container.
All returns must be accompanied by a written statement setting forth 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 1s made shall become
the property of Celestron.
The customer shall be responsible for all costs of transportation and insurance, both to and from the factory of
Celestron, and shall be required to prepay such costs.
Celestron shall use reasonable efforts to repair or replace any telescope covered by this warranty within thirty days of receipt. In
the event repair or replacement shall require more than thirty days, Celestron shall notify the customer accordingly. Celestron
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.
CELESTRON DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WHETHER OF MERCHANTABILITY OF
FITNESS FOR A PARTICULAR USE, EXCEPT AS EXPRESSLY SET FORTH HEREIN.
THE SOLE OBLIGATION OF CELESTRON UNDER THIS LIMITED WARRANTY SHALL BE TO REPAIR OR
REPLACE THE COVERED PRODUCT, IN ACCORDANCE WITH THE TERMS SET FORTH HEREIN. CELESTRON
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 CELESTRON 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.
Celestron 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 contact:
Celestron
Customer Service Department
2835 Columbia Street
Torrance, CA 90503 U.S.A.
Tel. (310) 328-9560
Fax. (310) 212-5835
Monday-Friday 8AM-4PM PST
This warranty supersedes all other product warranties.
NOTE: This warranty is valid to U.S.A. and Canadian customers who have purchased this product from an Authorized
Celestron Dealer in the U.S.A. or Canada. Warranty outside the U.S.A. and Canada is valid only to customers who purchased
from a Celestron Distributor or Authorized Celestron Dealer in the specific country and please contact them for any
warranty service.
Celestron
2835 Columbia Street
Torrance, CA 90503 U.S.A.
Tel. (310) 328-9560
Fax. (310) 212-5835
Web site at http//www.celestron.com
Copyright 2003 Celestron
All rights reserved.
(Products or instructions may change
without notice or obligation.)
Item # 11025-INST
$10.00
08-03
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