Celestron NexGuide Bedienungsanleitung Seite 11

GETTING STARTED
Adjusting Focus: Preview Mode
1. Insert an optical eyepiece into the eyepiece holder of the guide scope. Activate tracking on the mount and center
a bright star in the eyepiece's field of view.
2. Remove the optical eyepiece, replace it with NexGuide, and power it on. NexGuide will automatically enter
Preview Mode.
3. Use the +/- buttons to set the exposure time to 200 milliseconds.
4. Use the NOISE Menu to set the noise control level until the LCD is free of background noise.
5. Adjust the focuser of the guide scope until the image of the bright star appears in the LCD as a blank dot. Continue
to adjust the focuser until the blank dot appears to be smallest, suggesting that the image is in focus. At this point,
if you continue to turn the focuser you will see that the dot becomes larger again. The BRI reading will increase as
the image comes into focus. If the BRI reading increases to over 253, use the +/- buttons to reduce the exposure
time to avoid over-exposure.
6. Use the hand control on your equatorial mount to slowly move the star into the center of the image display area.
7. Use the ZM STAR menu to change the zoom level to show more details of the star image. Fine-tune the focuser
to obtain the smallest star image and the highest BRI reading. Lock the focuser of the guide scope and remove
the NexGuide.
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