Thanks for this info. I really found it interesting because I just purchased a Baader UHC-S , but haven't had a chance to try it out yet. I only have a small scope working at present (5" Newt), and the weather....typical. We should all get together and break the rain drought by buying more astro gear.
I did hold the filter up to my eye last night and noticed it virtually knocked out the orange coloured street lights (sodium type) completely, so with your findings I can't wait to try it out.
The Baaders are reasonably priced too, but don't know how they compare with more expensive ones like Lumicon, etc. Maybe an OIII is next....or a DGM NPB, or...
Clear Skies,
Nick
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