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Nebula filters
So last night I found Eta Carinae. No drama. It was a bit faint through my 10" dob. Mind you I was in my backyard with quarter moon and street lights and house lights. I put a moon filter on the eyepiece but all it did was brought out the colours in the stars a bit.
Anyway, my question is what is a good "budget" Nebula filter? I've looked online and have found OIIII and Nebula plus some other types and am confused. A lot of them are over $300. Is that normal?
I only really want to see if I can bring out more detail in nebulas but if I can be "sold" on why I need other ones, I'll save up and invest in those too.
Any help is appreciated.
Regards
Scott
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