Quote:
Originally Posted by jase
You don't need the USNO-B1 to plate solve at the focal length and FOV you're talking about. The USNO-A2.0 catalogue will meet the criteria with no problems at all.
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Interesting - Yet I don't see many stars in my FOV in TheSky - suggesting the databases it's using (which includes USNO-A2.0) don't contain many stars in the FOV?
Quote:
Originally Posted by jase
Keep in mind for successful plate solving you don't need to solve every single star in the field. Typically 20-80 stars works well. The more the better, but it can slow the process down.
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Yeap, my problem is simply not having enough. 80! I wish
My CCD images have plenty, but often there just isn't many at all visible in TheSky, presumably why it can't plate solve.
Quote:
Originally Posted by jase
Finally, make sure you telescope is pointing reasonably accurate.
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Yeap, done. Pointing is not perfect, but definitely within range.
Thanks,
Roger.