Nexstar Re-Alignment - Celestron NexStar 102GT Instruction Manual

TIPS FOR USING SOLAR SYSTEM ALIGN
For safety purposes, the Sun will not be displayed in any of the Hand Control's customer object lists
unless it is enabled from the Utilities Menu. To allow the Sun to be displayed on the Hand Control, do
the following:
1. Press the UNDO button until the display reads "NexStar GT."
2. Press the MENU button and use the Up and Down keys to select the Utilities menu.
Press ENTER.
3. Use the UP and Down keys to select Sun Menu and press ENTER.
4. Press ENTER again to allow the Sun to appear on the Hand Control display.
The Sun can be removed from the display by using the same procedure as above.
To improve the telescope pointing accuracy, you can use the Re-Align feature as described below.

NEXSTAR RE-ALIGNMENT

The NexStar has a re-alignment feature which allows you to replace either of the original alignment
stars with a new star or celestial object. This can be useful in several situations:
> If you are observing over a period of a few hours, you may notice that your original two alignment
stars have drifted towards the west considerably. (Remember that the stars are moving at a rate of
15º every hour). Aligning on a new star that is in the eastern part of the sky will improve your pointing
accuracy, especially on objects in that part of the sky.
> If you have aligned your telescope using the One-Star align method, you can use re-align to align
to an additional object in the sky. This will improve the pointing accuracy of your telescope without
having to re-enter information.
To replace an existing alignment star with a new alignment star:
1. Select the desired star (or object) from the database and slew to it.
2. Carefully centre the object in the eyepiece.
3. Once centreed, press the UNDO button until you are at the main menu.
4. With NexStar GT displayed, press the ALIGN key on the Hand Control.
5. The display will then ask you which alignment star you want to replace.
6. Use the UP and Down scroll keys to select the alignment star to be replaced, and
press ENTER. It is usually best to replace the star closest to the new object. This will
space out your alignment stars across the sky. If you have used one of the single object
alignment methods then it is always best to replace the object that is "unassigned" with
an actual object.
7. Press ALIGN to make the change.
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COMPUTERIZED TELESCOPE