Quote:
Originally Posted by Gem
Hi all
I am thinking of getting an OIII filter to help with looking at PN from in the suburbs. I have heard something about some filters not being good for imaging. Now, while I am looking at mainly using it for visual use and I was wondering whether the same filter could be used later for imaging.
I am looking at the GSO OIII filter due to price. Anyone know about the concerns of imaging and OIII filters?
Thanks! 
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Visually you are able to view some planetary nebulae very clearly with an Oiii from dark skies so it does make a big difference on some objects. In my experience imaging with an Oiii from the burbs requires a clear night and no moon. Unlike Ha or Sii, Oiii will suffer from LP and skyglow but it's better than nothing.