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No worries Grant.
Having used and owning the Astronomik one, I can see its benefit in finding PN objects visually. The OIII filter I have is designed for CCD use, but still benefits visual quite well. There is no doubt that it does its job too, since everything appears blue!
Last edited by WingnutR32; 24-08-2011 at 11:19 AM.
Reason: Slightly reworded
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