User manual CELESTRON COMPUSTAR

[. . . ] Or if you are an experienced amateur, you will appreciate the comprehensive database of over 4, 000 objects, including customized lists of all the best deep-sky objects, bright double stars and variable stars. No matter at what level you are starting out, the NexStar will unfold for you and your friends all the wonders of the Universe. Some of the many standard features of the NexStar include: · · · · · Incredible 4°/second slew speed. Storage for programmable user defined objects; and Many other high performance features! The NexStar's deluxe features combined with Celestron's legendary optical standards give amateur astronomers one of the most sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. [. . . ] User Defined Objects - The NexStar can store up to 50 different user defined objects in its memory. The objects can be daytime land objects or an interesting celestial object that you discover that is not included in the regular database. There are several ways to save an object to memory depending on what type of object it is: Save Sky Object: The NexStar stores celestial objects to its database by saving its right ascension and declination in the sky. This way the same object can be found each time the telescope is aligned. Once a desired object is centered in the eyepiece, simply scroll to the "Save Sky Obj" command and press ENTER. The display will ask you to enter a number between 1-25 to identify the object. The NexStar can also be used as a spotting scope on terrestrial objects. Fixed land objects can be stored by saving their altitude and azimuth relative to the location of the telescope at the time of observing. Since these objects are relative to the location of the telescope, they Save Land Object: 23 are only valid for that exact location. To save land objects, once again center the desired object in the eyepiece. The display will ask you to enter a number between 1-25 to identify the object. Once the correct NexStar model has been selected the power needs to be restarted before beginning the alignment procedure. The Select Model feature will return the hand control to its original factory settings. Parameters such as backlash compensation values along with slew and filter limits will be reset. However, stored parameters such as user defined objects will remain saved even after the model has been changed. 25 NexStar Ready MENU TRACKING MODE ALT-AZ EQ NORTH EQ SOUTH OFF RATE SIDEREAL SOLAR LUNAR VIEW TIME-SITE SIDEREAL TIME FILTER LIMITS ALTMAX IN LIST ALTMIN IN LIST UTILITIES SETUP TIME/SITE ANTI-BACKLASH SLEW LIMITS DIRECTION BUTTONS LIGHT CONTROL SELECT MODEL RS-232 USER OBJECTS GOTO SKY OBJ SAVE SKY OBJ ENTER RA & DEC GOTO LAND OBJ SAVE LAND OBJ GET ALT-AZ GOTO ALT-AZ GET RA-DEC GOTO RA-DEC ALIGNMENT AUTO ALIGN POINT TUBE NORTH & LEVEL CITY DATABASE United States Choose State Choose City Enter Time Enter Date International Choose Country Choose City CUSTOM SITE Enter Long/Lat Enter Time Enter Date LIST NAMED STAR NAMED OBJECT ASTERISMS TOUR VARIABLE STAR DOUBLE STAR CALDWELL MESSIER NGC SOLAR SYSTEM SAO TWO-STAR ALIGNMENT LEVEL TUBE SELECT STAR 1 CENTER STAR 1 SELECT STAR 2 CENTER STAR 2 QUICK ALIGN POINT TUBE NORTH & LEVEL SELECT LOCATION ENTER TIME ENTER DATE NexStar Menu Tree: The following figure is a menu tree showing the sub-menus associated with the primary command functions 26 A telescope is an instrument that collects and focuses light. The NexStar 60 and NexStar 80 telescopes are refractor telescopes that use an objective lens to collect its light. The NexStar 114 is a reflecting telescope with a primary and secondary mirror to gather and focus light. Focusing Once you have found an object in the telescope, turn the focusing knob until the image is sharp. To focus on an object that is nearer than your current target, turn the focusing knob toward the eyepiece (i. e. , so that the focusing tube moves away from the front of the telescope). For more distant objects, turn the focusing knob in the opposite direction. To achieve a truly sharp focus, never look through glass windows or across objects that produce heat waves, such as asphalt parking lots. Image Orientation The image orientation of any telescope changes depending on how the eyepiece is inserted into the telescope. When observing through the NexStar 60 or 80 using a diagonal, the image will be right side up, but reversed from left to right. When observing straight through, with the eyepiece inserted directly into the telescope, the image will be inverted. Reversed from left to right, as viewed with a Star Diagonal Inverted image, as viewed with the eyepiece directly in telescope When observing through the NexStar 114 or 130, a reflecting telescope, the image will appear up-side-down when looking through the eyepiece. [. . . ] The wiring is as follows: 39 APPENDIX D ­ MAPS OF TIME ZONES 40 41 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. [. . . ]