® INSTRUCTION MANUAL NexStar 5i • 1 NexStar 8i
INTRODUCTION ...............................................................................................................................4 WARNING ......................................................................................................................................................4 QUICK SETUP ..................................................................................................................................6 Assembling the NexStar............................................
TELESCOPE BASICS.....................................................................................................................33 Image Orientation ..................................................................................................................................33 Focusing.................................................................................................................................................34 Calculating Magnification ...........................................
Congratulations on your purchase of the Celestron NexStar! The NexStar i-series telescopes are precision scientific instruments that will allow you to enjoy viewing numerous objects in the night sky — planets, nebulae, star clusters, galaxies and more. Equipped with high speed motors and hand control, the NexStar-i allows you to remotely move your telescope to desired objects quickly and accurately.
10 1 2 3 9 4 8 5 7 6 Figure 1-A - The NexStar i-Series 1 2 Optical Tube Star Pointer Finderscope 6 7 Battery Compartment ON/OFF Switch / 12v power 3 Eyepiece 8 Fork Arm 4 Star Diagonal 9 Hand Control 5 Focuser Knob 10 Schmidt Corrector Plate (not shown) 5
3 StarPointer Finderscope Eyepiece 1 Star Diagonal Visual Back A) Attach the included accessories. Loosen the thumb screws on the side of the visual back and remove the protective plastic cap. Insert the star diagonal and eyepiece into the barrel of the visual back and tighten down all thumb screws. B) Remove the front lens cover from the end of the telescope. C) Attach the Star Pointer and turn it on by rotating the dial on the side.
5 7 in Direction Buttons Focus Knob Rotate the focuser knob until the object in the eyepiece comes to a sharp, bright focus. Use the arrow direction buttons to move the telescope and point it at a bright object such as the Moon. Press the RATE button to change the motor speed for fine centering.
The NexStar comes completely pre-assembled and can be operational in a matter of minutes.
The Hand Control The hand control is located on the side of the fork arm and can be removed and used remotely or used while attached to the fork. The hand control attaches to the fork arm by resting on two posts, located on the bottom of the hand control cradle, and a clip inside the fork arm. To remove the hand control from the fork arm cradle, gently lift the hand control upwards and pull out.
The Star Pointer Finderscope The Star Pointer is the quickest and easiest way to point your telescope exactly at a desired object in the sky. It's like having a laser pointer that you can shine directly onto the night sky. The Star Pointer is a zero magnification pointing tool that uses a coated glass window to superimpose the image of a small red dot onto the night sky.
1. To turn on the Star Pointer, rotate the variable brightness control (see figure 3-3) clockwise until you here a "click". To increase the brightness level of the red dot, continue rotating the control knob about 180º until it stops. 2. Locate a bright star or planet and center it in a low power eyepiece in the main telescope. 3. With both eyes open, look through the glass window at the alignment star. If the Star Pointer is perfectly aligned, you will see the red LED dot overlap the alignment star.
The NexStar telescope is a precision scientific instrument that will allow you to enjoy viewing numerous objects in the night sky — planets, nebulae, star clusters, galaxies and more. Equipped with high speed motors and hand control, the NexStar allows you to remotely move your telescope to desired objects quickly and accurately. At a touch of a button, you can slew your telescope across the sky in a matter of second and track objects remotely as the Earth rotates beneath them.
5 1 2 4 3 Figure 4-1 The NexStar Electronic Hand Control Rate Button Pressing the RATE key (3) allows you to instantly change the speed rate of the motors from high speed slew rate to precise centering rate and four speeds in between. Each rate corresponds to one of the indicator LED lights (5) on the hand control.
Utility Features The NexStar electronic hand control comes with a Star function key that allows you to change certain parameters of the hand controls functions, such as the tracking mode, the directional logic of the arrow keys and backlash compensation of the motor gears and azimuth tracking. Tracking Mode: The NexStar electronic hand control allows your telescope to track objects in the following modes: EQ North, EQ South, Alt-Az and Terrestrial (off).
2. 3. 4. 5. 6. 7. Press the STAR button on the hand control again or until the second indicator light from the left is on (see figure). Select the direction you which to set and press the corresponding arrow keys to increase the initial speed of the motors when that arrow button is pressed (once a button is pressed, all the indicator lights except the second from the left will illuminate).
Altitude 25°, Latitude 40° South East / South West Azimuth .87x sidereal Number of button presses* 3 Altitude ±.53x sidereal 2 Track Rate South North East / North West Track Rate 1x sidereal Number of button presses 4 .4x sidereal Number of button presses 2 0x sidereal 0 ±.53x sidereal 2 Track Rate *Each button press increases the motor speed by .25 times sidereal Altitude 55°, Latitude 40° South East / South West Azimuth 1.4x sidereal Number of button presses 6 Altitude ±.
Your NexStar i-Series telescope is compatible with many NexStar accessories including the Computerized Hand Control. The NexStar Computerized Hand Control gives you instant access to all the functions your telescope has to offer. With automatic slewing to over 40,000 objects, and common sense menu descriptions, even a beginner can master its variety of features in just a few observing sessions. Below is a brief description of the individual components of the computerized hand controller: 1. 2. 3.
4. Catalog Keys: The NexStar has keys on the hand control to allow direct access to each of the catalogs in its database. The NexStar contains the following catalogs in its database: Messier – Complete list of all Messier objects. NGC – Complete list of all the deep-sky objects in the Revised New General Catalog. Caldwell – A combination of the best NGC and IC objects. Planets - All 8 planets in our Solar System plus the Moon. Stars – A compiled list of the brightest stars from the SAO catalog.
Alignment Procedures In order for the NexStar to accurately point to objects in the sky, it must first be aligned to two known positions (stars) in the sky. With this information, the telescope can create a model of the sky, which it uses to locate any object with known coordinates.
• • Use the up and down arrow keys (3) keys to rotate the telescope tube until the index marker that moves with the optical tube is lined up with the stationary index marker on the fork arm. See figure 5-2. Use the left and right arrow keys to point the front of the telescope towards north. North can be found by finding the direction of the North Star (Polaris) or by using a compass. You do not need to point at the North Star, only the north horizon.
4. Helpful Hint NexStar then asks you to center in the eyepiece the alignment star you selected. Use the direction buttons to slew the telescope to the alignment star and carefully center the star in the eyepiece. In order to accurately center the alignment star in the eyepiece, it will be necessary to decrease the slew rate of the motors for fine centering. This is done by pressing the RATE key (11) on the hand controller then selecting the number that corresponds to the speed you desire.
1. Power on the NexStar by flipping the switch located on the bottom portion of the drive base, to the "on" position. Once turned on the hand control display will say NexStar Ready. Press ENTER to choose GPS Align or use the UP/Down scroll keys (10) to select a different mode of alignment. Pressing the ALIGN key will bypass the other alignment options and the scrolling text and automatically begins GPS Align. 2.
aligning your scope. For more information on polar aligning on a wedge, see the section on Wedge Align later in the manual. NexStar Re-Alignment The NexStar has a re-alignment feature which allows you to replace either of the two original alignment stars with a new star or celestial object. This can be useful in several situations: • • If you are observing over a period of a few hours, you may notice that your original two alignment stars have drifted towards the west considerably.
Helpful Hint Pressing the LIST key on the hand control will access all objects in the database that have common names or types. Each list is broken down into the following categories: Named Stars, Named Object, Double Stars, Variable Stars, Asterisms and CCD Objects. Selecting any one of these catalogs will display a numericalphabetical listing of the objects under that list. Pressing the Up and Down keys (10) allows you to scroll through the catalog to the desired object.
Direction Buttons The NexStar has four direction buttons (3) in the center of the hand control which control the telescope's motion in altitude (up and down) and azimuth (left and right). The telescope can be controlled at nine different speed rates. Rate Button Pressing the RATE key (11) allows you to instantly change the speed rate of the motors from high speed slew rate to precise guiding rate or anywhere in between. Each rate corresponds to a number on the hand controller key pad.
EQ North Used to track the sky when the telescope is polar aligned using an equatorial wedge in the Northern Hemisphere. EQ South Used to track the sky when the telescope is polar aligned using an equatorial wedge in the Southern Hemisphere. Off When using the telescope for terrestrial (land) observation, the tracking can be turned off so that the telescope never moves.
To replace the contents of any of the user defined objects, simply save a new object using one of the existing identification numbers; NexStar will replace the previous user defined object with the current one. Get RA/DEC - Displays the right ascension and declination for the current position of the telescope. Goto R.A/ Dec - Allows you to input a specific R.A. and declination and slew to it.
the drive control keys can be changed. To reverse the button logic of the hand control, press the MENU button and select Direction Buttons from the Utilities menu. Use the Up/Down arrow keys (10) to select either the azimuth (left and right) or altitude (up and down) button direction and press ENTER. Pressing ENTER again will reverse the direction of the hand control buttons from their current state.
Wedge Align – The NexStar has two equatorial wedge alignment modes (one for the northern hemisphere and one for the southern) that will help you polar align your telescope when using an optional equatorial wedge. For more information on using Wedge Align, see the Astronomy Basics section of the manual. Light Control – This feature allows you to turn off both the red key pad light and LCD display for daytime use to conserve power and to help preserve your night vision.
NexStar Ready MENU TRACKING MODE ALT-AZ EQ NORTH EQ SOUTH OFF RATE SIDEREAL SOLAR LUNAR VIEW TIME-SITE SCOPE SETUP SETUP TIME-SITE ANTI-BACKLASH SLEW LIMITS FILTER LIMITS DIRECTION BUTTONS GOTO APPROACH AUTOGUIDE RATE CORDWRAP UTILITIES GPS ON/OFF* COMPASS* ALT SENSOR* WEDGE ALIGN LIGHT CONTROL FACTORY SETTING VERSION GET ALT-AZ GOTO ALT-AZ HIBERNATE USER OBJECTS GOTO SKY OBJ SAVE SKY OBJ ENTER RA & DEC SAVE LAND OBJ GOTO LAND OBJ GET RA-DEC GOTO RA-DEC ALIGNMENT LIST GPS ALIGNMENT * SEARCHING..
1 APPENDIX C LONGITUDE LATITUDE degrees min degrees min 2 Direction Buttons Up and Down Scroll Buttons Torrance 118 19.8 33 48 Travis AFB 121 55.8 38 16.2 Tahoe 120 7.8 39 19.2 a) Use the Up and Down scroll buttons to get to the AutoAlign menu and press ENTER. b) Input the necessary date and time information as instructed by the hand control. (See Hand Control section for complete instruction on entering data).
6 5 Catalog Keys Object List Press the TOUR button on the hand control. The hand control will display the first object that is currently visible. Press INFO to read information about the object displayed. Press the DOWN scroll key to display the next object. Press ENTER to slew to (go to) the displayed object. TOUR Button There are three methods for selecting objects to view: 1) Press one of the Catalog buttons and enter the number of the object you want to view (i.e. M042).
A telescope is an instrument that collects and focuses light. The nature of the optical design determines how the light is focused. Some telescopes, known as refractors, use lenses. Other telescopes, known as reflectors, use mirrors. The Schmidt-Cassegrain optical system (or Schmidt-Cass for short) uses a combination of mirrors and lenses and is referred to as a compound or catadioptric telescope.
Focusing The NexStar's focusing mechanism controls the primary mirror which is mounted on a ring that slides back and forth on the primary baffle tube. The focusing knob, which moves the primary mirror, is on the rear cell of the telescope just below the star diagonal and eyepiece. Turn the focusing knob until the image is sharp. If the knob will not turn, it has reached the end of its travel on the focusing mechanism. Turn the knob in the opposite direction until the image is sharp.
distance of one thousand yards. The apparent field of each eyepiece that Celestron manufactures is found in the Celestron Accessory Catalog (#93685). General Observing Hints When working with any optical instrument, there are a few things to remember to ensure you get the best possible image. • • • • Never look through window glass. Glass found in household windows is optically imperfect, and as a result, may vary in thickness from one part of a window to the next.
Up to this point, this manual covered the assembly and basic operation of your NexStar telescope. However, to understand your telescope more thoroughly , you need to know a little about the night sky. This section deals with observational astronomy in general and includes information on the night sky and polar alignment. The Celestial Coordinate System To help find objects in the sky, astronomers use a celestial coordinate system that is similar to our geographical coordinate system here on Earth.
Motion of the Stars The daily motion of the Sun across the sky is familiar to even the most casual observer. This daily trek is not the Sun moving as early astronomers thought, but the result of the Earth's rotation. The Earth's rotation also causes the stars to do the same, scribing out a large circle as the Earth completes one rotation. The size of the circular path a star follows depends on where it is in the sky.
Polar Alignment (with optional Wedge) Even though the NexStar can precisely track a celestial object while in the Alt-Az position, it is still necessary to align the polar axis of the telescope (the fork arm) to the Earth's axis of rotation in order to do long exposure astro photography. To do an accurate polar alignment, the NexStar requires an optional equatorial wedge between the telescope and a tripod.
Finding the North Celestial Pole In each hemisphere, there is a point in the sky around which all the other stars appear to rotate. These points are called the celestial poles and are named for the hemisphere in which they reside. For example, in the northern hemisphere all stars move around the north celestial pole. When the telescope's polar axis is pointed at the celestial pole, it is parallel to the Earth's rotational axis.
With your telescope set up, you are ready to use it for observing. This section covers visual observing hints for both solar system and deep sky objects as well as general observing conditions which will affect your ability to observe. Observing the Moon Often, it is tempting to look at the Moon when it is full. At this time, the face we see is fully illuminated and its light can be overpowering. In addition, little or no contrast can be seen during this phase.
Observing the Sun Although overlooked by many amateur astronomers, solar observation is both rewarding and fun. However, because the Sun is so bright, special precautions must be taken when observing our star so as not to damage your eyes or your telescope. Never project an image of the Sun through the telescope. Because of the folded optical design, tremendous heat build-up will result inside the optical tube. This can damage the telescope and/or any accessories attached to the telescope.
Seeing Seeing conditions refers to the stability of the atmosphere and directly affects the amount of fine detail seen in extended objects. The air in our atmosphere acts as a lens which bends and distorts incoming light rays. The amount of bending depends on air density. Varying temperature layers have different densities and, therefore, bend light differently. Light rays from the same object arrive slightly displaced creating an imperfect or smeared image.
After looking at the night sky for a while you may want to try photographing it. Several forms of celestial photography are possible with your telescope, including short exposure prime focus, eyepiece projection, long exposure deep sky, terrestrial and even CCD imaging. Each of these is discussed in moderate detail with enough information to get you started. Topics include the accessories required and some simple techniques.
• • • • • T-Max 100 T-Max 400 Any 100 to 400 ISO color slide film Fuji Super HG 400 Ektar 25 or 100 2. Center the Moon in the field of your NexStar telescope. 3. Focus the telescope by turning the focus knob until the image is sharp. 4. Set the shutter speed to the appropriate setting (see table below). 5. Trip the shutter using a cable release. 6. Advance the film and repeat the process.
ready for your next shot. Keep in mind that the card should be held a few inches in front of the telescope, and not touching it. It is easier if you use two people for this process; one to release the camera shutter and one to hold the card. Here's the process for making the exposure. 1. Find and center the desired target in the viewfinder of your camera. 2. Turn the focus knob until the image is as sharp as possible. 3. Place the black card over the front of the telescope. 4.
There are several techniques for this type of photography, and the one chosen will determine the standard accessories needed. The best method for long exposure deep sky astro photography is with an off-axis guider. This device allows you to photograph and guide through the telescope simultaneously. Celestron offers a very special and advanced off-axis guider, called the Radial Guider (#94176). In addition, you will need a T-Ring to attach your camera to the Radial Guider.
Terrestrial Photography Your NexStar 8i makes an excellent 2000mm telephoto lens for terrestrial (land) photography (The NexStar 5i would be equivalent to a 1250mm lens). Terrestrial photography is best done will the telescope in Alt-Az configuration and the tracking drive turned off so that objects will remain in your camera's field of view. Metering The NexStar has a fixed aperture and, as a result, fixed f/ratios.
While your NexStar 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.
To verify collimation, view a star near the zenith. Use a medium to high power ocular — 12mm to 6mm focal length. It is important to center a star in the center of the field to 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 recollimation is needed. Figure 10-2 -- Even though the star pattern appears the same on both sides of focus, they are asymmetric.
Perfect collimation will yield a star image very symmetrical just inside and outside of focus. In addition, perfect collimation delivers the optimal optical performance specifications that your 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.
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. Adapter, Car Battery (#18769) - Celestron offers the Car Battery Adapter that allows you to run the NexStar drive off an external power source.
• Super Modified Achromatic (SMA) Eyepieces: 1-1/4" The SMA design is an improved version of the Kellner eyepiece. SMAs are very good, economical, general purpose eyepieces that deliver a wide apparent field, good color correction and an excellent image at the center of the field of view. Celestron offers SMA eyepieces in 1-1/4" sizes in the following focal lengths: 6mm, 10mm, 12mm, 17mm and 25mm. • Ultima - Ultima is not really a design, but a trade name for our 5-element, wide field eyepieces.
top or side of the telescope, making it possible to shoot with a normal or wide angle lens while guiding through the telescope. Piggyback Mount, NexStar 5i (#93601) –Mount your camera, with its lens, to the top of the telescope, while still utilizing your StarPointer finderscope for telescope alignment. Planisphere (#93720) - A simple and inexpensive tool for all levels of observers, from naked eye viewers to users of highly sophisticated telescopes.
T-Adapter (#93633-A) - T-Adapter (with additional T-Ring) allows you to attach your SLR camera to the rear cell of your Celestron NexStar. This turns your NexStar 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.
APPENDIX A – TECHNICAL SPECIFICATIONS Optical Specification Design Aperture Focal Length F/ratio of the Optical System Primary Mirror: Material Coatings Secondary Mirror: Material Coatings Central Obstruction Corrector Plate: Material Coatings Highest Useful Magnification Lowest Useful Magnification (7mm exit pupil) Resolution: Rayleigh Criterion Dawes Limit Photographic Resolution Light Gathering Power Near Focus standard eyepiece or camera Field of View: Standard Eyepiece : 35mm Camera Linear Field of Vie
Database Complete Revised NGC Catalog Complete Messier Catalog Complete IC Catalog Complete Caldwell Solar System objects Abell Galaxies Famous Asterisms Selected CCD Imaging Objects Selected SAO Stars Total Object Database 40,000+ objects 400 user defined programmable objects.
Appendix B – Glossary of Terms AAbsolute magnitude Airy disk Alt-Azimuth Mounting Altitude Altitude Aperture Apparent Magnitude Arcminute Arcsecond Asterism Asteroid Astrology Astronomical unit Aurora Azimuth BBinary Stars CCelestial Equator Celestial pole Celestial Sphere Collimation DDeclination EEcliptic Equatorial mount 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.
Focal length JJovian Planets KKuiper Belt LLight-Year MMagnitude Meridian Messier NNebula North Celestial Pole Nova OOpen Cluster PParallax Parfocal Parsec Point Source RReflector Resolution The distance between a lens (or mirror) and the point at which the image of an object at infinity is brought to focus. The focal length divided by the aperture of the mirror or lens is termed the focal ratio.
Right Ascension: (RA) SSchmidt Telescope Sidereal Rate TTerminator UUniverse VVariable Star WWaning Moon Waxing Moon ZZenith Zodiac 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.
APPENDIX C LONGITUDES AND LATITUDES LONGITUDE degrees min 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 ARIZONA Davis-M AFB Deer Valley Douglas Falcon Fld Flagstaff Fort Huachuc Gila Bend Goodyear GrandCanyon Kingman Luke Page Payson Phoenix Prescott Safford Awrs Scottsdale Show Low
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 Fld GEORGIA 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 Waycross HAWAII Barbers Pt Barking San Fr Frigate Hilo Honolulu Int Kahului Maui Kaneohe Mca Kilauea Pt Lanai-Lanai Lihue-Kauai Maui
Wurtsmith Ypsilanti MINNESOTA Albert Lea 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 MISSISSIPPI Columbus AFB Golden Trian Greenville Greenwood Gulfport Hattiesburg Jackson Keesler AFB Laurel Mccomb Meridian NAS Meridian/Key Natchez Oxford Tupelo MISSOURI Columbia Cape Girardeau Ft Leonard Jefferson Cit
LONGITUDE degrees OKLAHOMA Altus AFB 99 Ardmore 97 Bartlesville 96 Clinton 99 Enid 97 Fort Sill 98 Gage 99 Hobart 99 Lawton 98 Mcalester 95 Norman 97 Oklahoma 97 Page 94 Ponca City 97 Stillwater 97 Tinker AFB 97 Tulsa 95 Vance AFB 97 OREGON Astoria 123 Aurora 122 Baker 117 Brookings 124 Burns Arpt 118 Cape Blanco 124 Cascade 121 Corvallis 123 Eugene 123 Hillsboro 122 Klamath Fall 121 La Grande 118 Lake View 120 Meacham 118 Medford 122 Newport 124 North Bend 124 Ontario 117 Pendleton 118 Portland 122 Redmond
LONGITUDE LATITUDE degrees min degrees Walla Walla 118 16.8 46 Wenatchee 120 1.2 47 Whidbey Is 122 39 48 Yakima 120 31.8 46 WEST VIRGINIA Beckley 81 7.2 37 Bluefield 81 13.2 37 Charleston 81 3.6 38 Clarksburg 80 13.8 39 Elkins 79 51 38 Huntington 82 33 38 Lewisburg 80 2.4 37 Martinsburg 77 58.8 39 Morgantown 79 55.2 39 Parkersburg 81 25.8 39 Wheeling 80 39 40 Wh Sulphur 80 1.2 37 LONGITUDE degrees min min 6 24 21 34.
Appendix D - RS-232 Connection (for Computerized Hand Control) You can control your NexStar 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 NexStar can be controlled using popular astronomy software programs. Communication Protocol: NexStar-i communicates at 9600 bits/sec, No parity and a stop bit. All angles are communicated with 16 bit angle and communicated using ASCII hexadecimal.
APPENDIX E – MAPS OF TIME ZONES 66
CELESTRON ONE YEAR WARRANTY A. Celestron warrants this telescope to be free from defects in materials and workmanship for one year. 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. B.
Celestron 2835 Columbia Street Torrance, CA 90503 Tel. (310) 328-9560 Fax. (310) 212-5835 Web site at http//www.celestron.com Copyright 2002 Celestron All rights reserved. (Products or instructions may change without notice or obligation.) Item # 11033-INST 08-02 $10.
