Celestron NEXSTAR 4, Instruction Manual

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The speed at which information scrolls across the hand control display can be changed while the information is being
viewed:
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Press the “1” key repeatedly to speed up the scroll speed.
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Press the “4” key repeatedly to slow down the scroll speed.
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Press the “7” key to freeze and unfreeze the information on the display.
2. 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.
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.
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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 control 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
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. Each rate corresponds to a number on the hand controller key pad. The number 9 is
the fastest rate (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:
Nine available slew speeds