Depends what you're imaging!
This is through a 4" f15 refractor
http://www.astrobin.com/18577/
But - I assume you're asking about deep sky, in which case you will find the relatively small aperture will add to the degree of difficulty.
cheers,
Andrew.
Quote:
Originally Posted by Hans Tucker
Is it a pointless exercise to try and image with an f/12 refractor?
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