User manual CELESTRON TABLETOP 31034

[. . . ] Below is a brief description of the individual components of the NexStar GT hand controller: 1. Liquid Crystal Display (LCD) Window: Has a dual-line, 16 character display screen that is backlit for comfortable viewing of telescope information and scrolling text. Align: Instructs the NexStar to use a selected star or object as an alignment position. Direction Keys: Allows complete control of the NexStar in any direction. [. . . ] When the telescope has been aligned to both stars the display will read Alignment Successful and you are now ready to find your first object. Successful, Observing Tips If the wrong star was centered and aligned to, the NexStar display will read Align Failed Press UNDO to begin the Failed iled. If you are not sure if the correct star was centered, always remember that the alignment star will be the brightest star nearest the field of view of the finder. There may be other fainter stars visible that are closer to the center of the Star Pointer, but the actual alignment star will be obviously brighter than any other star in the area. For the best possible pointing accuracy, always center the alignment stars using the up arrow button and the right arrow button. Approaching the star from this direction when looking through the eyepiece will eliminate much of the backlash between the gears and assure the most accurate alignment possible. Two Star Alignment With the two-star alignment method, the NexStar requires the user to know the positions of only two bright stars in order to accurately align the telescope with the sky and begin finding objects. Here is an overview of the two-star alignment procedure: 1. Once the NexStar is powered on, use the Up and Down scroll keys to select Two-Star Align and press TwoAlign, ENTER. The NexStar display will ask you to move the telescope tube until it is horizontal to the ground. To do this, use the direction keys (3) to move the telescope until it is roughly level with the ground. The SELECT STAR 1 message will appear in the top row of the display. While the telescope is slewing to the object, the user can still access many of the hand control functions (such as displaying information about the object). If you slew to an object that is below the horizon, NexStar will notify you by displaying a message reminding you that you have selected an object outside of your slew limits (see Slew Limits in the Utility Features section of the manual). Press UNDO to go back and select a new object. Press ENTER to ignore the message and continue the slew. The NexStar hand control will only display objects that are below the horizon if the Filter Limits are set below 0º in altitude. See Filter Limits in the Utility Feature section of the manual for more information on setting the filter limits. Caution: Never slew the telescope when someone is looking into the eyepiece. The telescope can move at fast slew speeds and may hit an observer in the eye. Object information can be obtained without having to do a star alignment. After the telescope is powered on, pressing any of the catalog keys allows you to scroll through object lists or enter catalog numbers and view the information about the object as described above. Tour Mode The NexStar includes a tour feature which automatically allows the user to choose from a list of interesting objects based on the date and time in which you are observing. The automatic tour will display only those objects that are within your set filter limits. To activate the Tour mode, press the TOUR key (6) on the hand control. The NexStar will display the best objects to observe that are currently in the sky. · · · To see information and data about the displayed object, press the INFO key. [. . . ] - Dec: GoTo Object: 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. Get Alt-Az - Displays the relative altitude and azimuth 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. 9 Goto Alt-Az - Allows you to enter a specific altitude and azimuth position and slew to it. Helpful Hint To store a set of coordinates (R. A. /Dec) permanently into the NexStar database, save it as a User Defined Object as described above. Utility Features M E NU Scrolling through the MENU options will also provide access to several advanced utility functions such as anti-backlash compensation and slew limits. [. . . ]