Celestron CGEM II 800 Schmidt-Cassegrain Telescopes CGEM II EQ Mount Manual 5l - Page 28

will be replaced with the current information° Repeat

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Note: Once the worm gear is indexed, it will not need to be positioned again until the telescope is turned off. To give yourself more time to prepare for guiding, it may be necessary to restart PEC recording after the worm gear has found its index. 6. After 10 minutes, PEC will automatically stop recording. 7. Point the telescope at the object you want to image and center the guide star on the illuminated cross hairs. You are ready to play back the periodic error correction. 8. Once the drive's periodic error has been recorded, use the Playback function to begin playing back the correction for future imaging guiding. If you want to re-record the periodic error, select Record and repeat the recording processes again. The previously recorded information will be replaced with the current information. Repeat steps 7 and 8 to playback the PEC corrections for your next object. Does the PEC function make unguided astroimaging possible? Yes and no. For solar (filtered), lunar and piggyback (up to 200 mm), the answer is yes. However, even with PEC, autoguiding is still mandatory for long exposure, deep sky astroimaging. 28 | ENGLISH

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28
| ENGLISH
Note:
Once the worm gear is indexed, it will not need to
be positioned again until the telescope is turned off° To give
yourself more time to prepare for guiding, it may be necessary
to restart PEC recording after the worm gear has found its
index°
6°
After 10 minutes, PEC will automatically stop recording°
7°
Point the telescope at the object you want to image and
center the guide star on the illuminated cross hairs° You
are ready to play back the periodic error correction°
8°
Once the drive’s periodic error has been recorded, use
the Playback function to begin playing back the correction
for future imaging guiding° If you want to re-record the
periodic error, select Record and repeat the recording
processes again° The previously recorded information
will be replaced with the current information° Repeat
steps 7 and 8 to playback the PEC corrections for your
next object°
Does the PEC function make unguided astroimaging
possible? Yes and no° For solar (filtered), lunar and piggy-
back (up to 200 mm), the answer is yes° However, even
with PEC, autoguiding is still mandatory for long exposure,
deep sky astroimaging°