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Old 20-10-2010, 08:14 AM
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h0ughy (David)

h0ughy is offline
Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 32,101
Originally Posted by philiphart View Post
You'll generally need UV/IR cut somewhere in the optical train otherwise you'll get bloated stars with just about any lens I think. But you probably have that already with your rear filter (but less 'cut' than the unmodded camera) unless you opted for the 'clear' filter option.

I still use a UV/IR filter on front but that's mainly to keep dew, dust and anything else off the front lens element. I don't mind wiping a filter clean but I prefer not to touch the lens itself as much as possible.
You must be lucky as i always get a reflection of a bright star etc in the image when i use a filter - i now remove them but use a dew strap and a microfibre lens cloth if needed.
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