Celestron 4 - Manuals

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...

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...

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...

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 ...

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...

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...

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...

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...

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...

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...

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 ...

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...

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...

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 ...

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...

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....

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...

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...

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...

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...

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 ...

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...