Celestron NexGuide Bedienungsanleitung Seite 12

OPERATING UNDER THE NIGHT SKY
Now it is time to make a parfocal eyepiece. This will come in handy when you want
to find another guide star without changing the focus of the guide scope. Use the
included parfocal ring to ensure the eyepiece is in focus with the autoguider.
1. Remove the autoguider from the guide scope.
2. Place the parfocal ring loosely around the eyepiece barrel.
3. Insert the eyepiece into the guide scope focuser. A crosshair or reticle eyepiece is
recommended for precise centering of the guide star.
4. Slowly slide the eyepiece towards your eye until the star image is sharp. Do not
move the focuser knobs. (Note: You may need to attach the 1.25" extension barrel to the eyepiece
if the eyepiece is too short to reach focus.)
5. Slide the parfocal ring towards the focuser draw tube as far as it will go.
6. Use the thumbscrews on the ring to lock it in place. This will mark the correct focus position for that eyepiece.
7. Ensure your guide star is still centered and place NexGuide back onto the guide scope.
Aligning NexGuide's orientation with the R.A. and Dec axes of your mount
1. Turn on the crosshair on the LCD screen using the Cross Menu.
2. Rotate the autoguider inside the focuser barrel so that when the equatorial mount is slowly slewing in RA axis the star
image moves parallel to either the horizontal or the vertical line. Instead of using the hand control of the mount, you may
use the LEFT/RIGHT direction buttons on the NexGuide to control the RA axis of the mount.
Remember to mark the position of the NexGuide on the guide scope, so you won't have to perform the autoguider
alignment again.
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