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. [. . . ] After the first alignment star has been entered the NexStar will automatically slew to a second alignment star and have you repeat the same procedure for that star. 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. 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. Use the Up and Down scroll keys (10) to select the star you wish to use for the first alignment star. 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. To see the next tour object, press the Down key. Direction Buttons The NexStar has four direction buttons in the center of the hand control which controls the telescope motion in altitude (up and down) and azimuth (left and right). The telescope can be controlled at nine different speed rates. 1 2 3 4 5 = = = = = 2x 4x 8x 16x 32x 6 7 8 9 = = = = . 5º / sec 1º / sec 2º / sec 4º / sec Nine available slew speeds 7 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. The number 9 is the fastest rate (approximately 4º per second, depending on power source) and is used for slewing between objects and locating alignment stars. The number 1 on the hand control is the slowest rate (2x sidereal) and can be used for accurate centering of objects in the eyepiece. To change the speed rate of the motors: · · Press the RATE key on the hand control. [. . . ] Scroll to the "Enter RA-DEC " command and press Enter RAENTER. To go to any of the user defined objects stored in the database, scroll down to either GoTo Sky Obj or Goto Land Obj and enter the number of the object you wish to select and press ENTER. NexStar will automatically retrieve and display the coordinates before slewing to the object. Save Land Object: Enter R. A. - 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. [. . . ]