Page 3 - iii; OPTIONAL ACCESSORIES
iii M OTION OF THE S TARS ............................................................................................................................. 26 P OLAR A LIGNMENT ( WITH OPTIONAL W EDGE ) ......................................................................................... 27 Photograp...
Page 4 - Some of the many standard features of the NexStar include:; Warning
4 Congratulations on your purchase of the Celestron NexStar! The NexStar ushers in a whole new generation of computerautomated technology. Simple and friendly to use, the NexStar is up and running after locating just two alignment stars.It’s the perfect combination of power and portability. If you a...
Page 6 - section for detailed alignment procedures).
6 Input the necessary date and time information asinstructed by the hand control. Press ENTER aftereach entry. The NexStar will also ask for time zoneand location information. Use the UP and Down scrollbuttons to select from the various options, pressingENTER after each selection. (See Hand Control ...
Page 8 - Powering the NexStar; Figure 3-1: The NexStar 4 Battery Compartment
8 The NexStar 4 comes completely pre-assembled and can be operational in a matter of minutes. The NexStar is convenientlypackaged in one reusable shipping carton that contains all of the following accessories: • 25mm SMA Eyepiece – 1 ¼ " • Star Pointer Finderscope • Computerized Hand Control wit...
Page 10 - The Star Pointer Finderscope; Star Pointer Installation; Star Pointer Operation; Figure 3-3: The Star Pointer Finderscope with Mounting Bracket
10 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 havinga laser pointer that you can shine directly onto the night sky. The Star Pointer is a zero magnification pointing tool that usesa coated gl...
Page 12 - The NexStar Hand Control
12 The NexStar 4 has a removable hand controller built into the side of the fork arm designed to give you instant access to allthe functions the NexStar has to offer. With automatic slewing to over 4,000 objects, and common sense menudescriptions, even a beginner can master its variety of features i...
Page 13 - Alignment Procedure
13 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. List – For quick access, all of the best and most popular objects in the NexStar database have been broken down ...
Page 14 - Helpful
14 to use your hand control on a different NexStar model, the Select Model utility feature allows you to re-select the proper NexStar model from the displayed list (see Select Model later in this section). 2. Use the Up and Down scroll keys to select AutoAlign if it is not already displayed , and pr...
Page 15 - Two Star Alignment
15 procedure for that star. When the telescope has been aligned to both stars the display will read Alignment Successful Alignment Successful Alignment Successful Alignment Successful , and you are now ready to find your first object. If the wrong star was centered and aligned to, the NexStar displa...
Page 16 - Selecting an Object; Press the INFO Key
16 NexStar Re-Alignment The NexStar has a re-alignment feature which allows you to replace either of the two original alignment stars with a newstar 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 t...
Page 17 - Press the ENTER Key; Tour Mode; Rate Button; Nine available slew speeds
17 The speed at which information scrolls across the hand control display can be changed while the information is beingviewed: • Press the “1” key repeatedly to speed up the scroll speed. • Press the “4” key repeatedly to slow down the scroll speed. • Press the “7” key to freeze and unfreeze the inf...
Page 18 - Tracking Mode; Tracking Rate; Sidereal Time
18 • Press the RATE key on the hand control. The LCD will display the current speed rate. • Press the number on the hand control that corresponds to the desired speed. The hand control has a "double button" feature that allows you to instantly speed up the motors without having to choose asp...
Page 19 - User Defined Objects; Save Land Object
19 If you want to explore the entire object database, set the maximum altitude limit to 90º and the minimum limit to –90º. Thiswill display every object in the database lists regardless of whether it is visible in the sky from your location. User Defined Objects - The NexStar can store up to 50 diff...
Page 20 - Light Control; ENU
20 U U t t i i l l i i t t y y F F e e a a t t u u r r e e s s Scrolling through the MENU options will also provide access to several advanced utility functions such as anti-backlashcompensation and slew limits. Setup Time-Site - Allows the user to customize the NexStar display by changing time and ...
Page 21 - M E N U; A L IG N M E N T; NexStarReady; functions
21 A L T - A ZE Q N O R T HE Q S O U T HO F F M O D E S ID E R E A LS O L A RL U N A R R A T E T R A C K I N G V I E W T IM E -S I T ES I D E R E A L T I M E A L T M A X IN L IS TA L T M IN IN L IS T F I L T E R L I M I T S S E T U P T I M E / S I T EA N T I - B A C K L A S HS L E W L I M I T SD I R...
Page 25 - The celestial sphere seen from the outside showing R.A. and DEC.
25 Up to this point, this manual covered the assembly and basic operation of your NexStar telescope. However, tounderstand your telescope more thoroughly , you need to know a little about the night sky. This section deals withobservational astronomy in general and includes information on the night s...
Page 27 - Definition
27 P P o o l l a a r r A A l l i i g g n n m m e e n n t t ( ( w w i i t t h h o o p p t t i i o o n n a a l l W W e e d d g g e e ) ) Even though the NexStar can precisely track a celestial object while in the Alt-Az position, it is still necessary to alignthe polar axis of the telescope (the fork ...
Page 28 - Photography with the NexStar 4; Finding the North Celestial Pole
28 Photography with the NexStar 4 After looking at the night sky for a while you may want to try photographing it. In addition to the specific accessoriesrequired for celestial photography, there is the need for a camera - but not just any camera. The camera does not haveto have many of the features...
Page 31 - Transparency
31 O O b b s s e e r r v v i i n n g g t t h h e e S S u u n n Although overlooked by many amateur astronomers, solar observation is both rewarding and fun. However, becausethe Sun is so bright, special precautions must be taken when observing our star so as not to damage your eyes or yourtelescope....
Page 32 - Seeing
32 Seeing Seeing conditions refers to the stability of the atmosphere and directly affects the amount of fine detail seen in extendedobjects. The air in our atmosphere acts as a lens which bends and distorts incoming light rays. The amount of bendingdepends on air density. Varying temperature layers...
Page 33 - Do NOT rub in circles!
33 While your NexStar telescope requires little maintenance, there are a few things to remember that will ensure your telescopeperforms at its best. C C a a r r e e a a n n d d C C l l e e a a n n i i n n g g o o f f t t h h e e O O p p t t i i c c s s Occasionally, dust and/or moisture may build up...
Page 34 - • Plössl
34 You will find that additional accessories enhance your viewing pleasure and expand the usefulness of your telescope. Forease of reference, all the accessories are listed in alphabetical order. Adapter, AC (#18770) – Allows DC (battery) powered telescopes to be converted for use with 120 volt AC p...
Page 35 - Eyepiece Filters
35 available in the following focal lengths: 2.5mm, 4mm, 5mm, 6mm, 9mm, 10mm, 12mm and 15mm. Celestron also offersthe LV Zoom eyepiece (#3777) with a focal length of 8mm to 24mm. It offers an apparent field of 40º at 24mm and 60º at8mm. Eye relief ranges from 15mm to 19mm . Eyepiece Filters - To enh...
Page 37 - Appendix A - Technical Specifications
37 Appendix A - Technical Specifications O O O p p p t t t i i i c c c a a a l l l S S S p p p e e e c c c i i i f f f i i i c c c a a a t t t i i i o o o n n n Design Maksutov-Cassegrain Catadioptric Aperture 4 inches (102mm) Focal Length 52 inches (1325mm) F/ratio of the Optical System 13 Primary ...
Page 49 - CELESTRON ONE YEAR WARRANTY
CELESTRON ONE YEAR WARRANTY A. Celestron International (CI) warrants this telescope to be free from defects in materials and workmanship for one year. CI willrepair or replace such product or part thereof which, upon inspection by CI, is found to be defective in materials orworkmanship. As a conditi...
