Quote:
Originally Posted by Paul Haese
I agree with Mike that trying to get OIII in moonless conditions is best and depending on what filter you have. Although I sometimes try to get it due to the 3nm filter I am using. Still it is best to get it when no moon is present.
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Sounds like solid advice, Paul. This was a 7nm filter too, which didn't help
But in winter I guess you take the clear nights you get
Now if only the Aussie dollar would improve and make the Astrodons a bit more affordable!
Edit to add: quick back of the envelope calculation shows that with a 3nm filter in (my usual) dark sky site vs my 7nm suburban attempt, 3 hours of OIII should have matched this 24 hour shot in terms of SNR!