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Old 25-04-2007, 12:17 PM
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higginsdj
A Lazy Astronomer

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Join Date: Mar 2006
Location: Canberra
Posts: 614
Quote:
Originally Posted by CometGuy View Post
How it could be at the limit of a 16" telescope + CCD camera beats me. This would indicate something closer to earth size.
The practical detection limit for a 0.4m scope and CCD is around R magnitude 22. You will find that many 0.35m scopes + CCD's have been regularly able to detect moving targets at R Mag 21 in the UK, US and Australia. Of course this will vary with sky brightness (and I am not talking about darks sky limits here)

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