26-10-2008, 09:59 PM
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Moderator
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Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,426
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Quote:
Originally Posted by Peter Ward
http://www.go.ednet.ns.ca/~larry/astro/maglimit.html
would indicate that visually a 30" scope should top out at around 17th magnitude in a mag 6 sky.
You can also forget photopic vision...images at this intensity level are very much shades of gray.
What did my rig CCD pull in mag 4 skies? Try around mag 20.
It's interesting how perceptions are often mixed 
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 biting well 
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