This is an excellent all around visual and photographic filter for contrast enhancement for all telescopes.
There is almost no loss of image brightness!
Enhances contrast, enhances the red colours in the image (especially with Mars and Jupiter) and does an excellent job of filtering out street lamp light, which is the biggest contributor to the nightly “Skyglow”.
Also suited for Photography – The IR spectral range is blocked making stars much sharper when used with dSLRs
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