Celestron NexGuide Bedienungsanleitung Seite 13

OPERATING UNDER THE NIGHT SKY
Finding and locking a guide star
1. Locate the celestial object that you will be imaging through your main telescope. Activate tracking on the equatorial
mount. The guide scope should also be pointed to the same region in the sky.
2. Insert the parfocal eyepiece into the guide scope. Locate a bright star nearby and adjust the guide scope so the star
appears in the center of the parfocal eyepiece.
3. Replace the par-focal eyepiece with NexGuide.
4. The image of the star should appear in the image zone of the LCD screen. If not, use the +/- buttons to increase the
exposure time until the image of the star appears. (Note: Generally speaking, shorter exposure gives better periodic
error correction results. The BRI reading on the screen is a good reference. The minimum BRI reading required for the
NexGuide to work stably is 10. Try to bring the BRI reading to at least 10 for best results. Use the NOISE menu to filter
out the noise if the image area of the LCD screen becomes blank or the background noise becomes too noticeable.)
5. Adjust the guide scope to bring the star to the center if it is too close to the edge of the image zone on the NexGuide.
This is only necessary when the zoom level is set at 1.
6. Lock the guide star automatically or manually using the Lock Menu. When manually locking on a star, use the arrow
button to position the small crosshair over the desired guide star. Press ENTER to manually lock on that star.
If the guide star is successfully locked, NexGuide will enter Locked Mode. The zoom level will automatically be switched to
4, and NexGuide will display an area of 64x64 pixels near the locked star. NexGuide will keep tracking the star as it slowly
drifts away from its original position.
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