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Old 21-05-2014, 08:21 AM
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Andy01 (Andy)
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Andy01 is offline
Join Date: Mar 2012
Location: Melbourne
Posts: 2,318
Ha filter for OSC CCD

Hi everyone,

I realize this is best done on a mono camera, but until the finance minister approves that i'd like to get an Ha filter to do some HaRGB blended images.

I have a 42mm threaded IDAS LP filter that screws into either the SBIG 8300c nosepiece or the end of my flattener/reducer and works well from my light polluted backyard. I'm planning on swapping it out to do the ha subs.

Any recommendations for brands? Baader, Astrodon? Do the big bucks make a real difference? Will a 7nm be sufficient or overkill?

Appreciate your input.
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