Celestron NexStar 90SLT Computerized Telescope NexStar SLT Series MAKs Manual - Page 23
Sun Menu, Scrolling Menu, Calibrate Goto, Set Mount Position
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Sun Menu For safety purposes the Sun will not be displayed as a database object unless it is first enabled. The enable the Sun, go to the Sun Menu and press ENTER. The Sun will now be displayed in the Planets catalog as can be used as an alignment object when using the Solar System Alignment method. To remove the Sun from displaying on the hand control, once again select the Sun Menu from the Utilities Menu and press ENTER. Scrolling Menu This menu allows you to change the rate of speed that the text scrolls across the hand control display. Press the Up (number 6) button to increase the speed of the text. Press the Down (number 9) button to decrease the speed of the text. Calibrate Goto Goto Calibration is a useful tool when attaching heavy visual or photographic accessories to the telescope. Goto Calibration calculates the amount of distance and time it takes for the mount to complete its final slow goto when slewing to an object. Changing the balance of the telescope can prolong the time it takes to complete the final slew. Goto Calibration takes into account any slight imbalances and changes the final goto distance to compensate. Set Mount Position The Set Mount Position menu can be used to recover an alignment in cases where the telescope or tripod has been manually moved. For instance, you might use this feature if you needed to adjust the level of the tripod by raising or lowering the tripod legs. After the mount has been moved, simply slew to a bright star and center it up in the eyepiece, then select Set Mount Position from the Utilities menu. Since the telescope has been moved, the pointing accuracy will be diminished. But now you can slew to a new set of alignment stars and replace any of the original alignment stars with the new stars. This will help you to avoid having to start the alignment process over from the beginning. 23
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