Celestron NexStar GT User Manual
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Once the desired object is displayed on the hand control screen, you have two options:
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Press the INFO Key.
This will give you useful information about the selected object such as magnitude,
constellation and fascinating facts about many of the objects.
The speed at which information scrolls across the hand control display can be changed while the information is being
viewed:
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 information on the display.
•••• Press the ENTER Key. This will automatically slew the telescope to the coordinates of the object. 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.
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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.
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To see information and data about the displayed object, press the INFO key.
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To slew to the object displayed, press ENTER.
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To see the next tour object, press the Down key.
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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 = 2x
6 = .5º / sec
2 = 4x
7 = 1º / sec
3 = 8x
8 = 2º / sec
4 = 16x
9 = 4º / sec
5 = 32x
Nine available slew speeds