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No, I see a bluish-green coloration to *everything* when using my OIII that only has the 110 nm FWHM OIII passband.

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1. How do you explain the second photo? (the filer must be kept somewhat away as in the photo). There are colors through the filter in the photo (also original reds and black look the same color!). The same happens to the eye (do not tilt the filter, we are not changing the band pass).

Edited by Mauro Da Lio (12/14/07 05:14 AM)

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