All the important emission lines, as well as the spectral region that the very well dark adapted eye can see, can pass through the filter. If you wonder what to expect from the CLS, you might want to watch this video from Kamil Pekala Main use The filters are optimized for use with aperture ratios from 1:3 to 1:15.
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Astronomik CLS Light Pollution Filter - 1.25". Mint in Case. Astronomik is a leading manufacturer of quality astronomy filters. All the important emission lines, as well as the spectral region that the very well dark adapted eye can see, can pass through the filter.
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Barely used only a handful of times so well looked after Astronomik CLS EOS Clip filter for Canon cameras. It comes with the original packaging and protective wrapping, plus the original cae and internal padding to keep it secure when not being used.
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Astronomik CLS Light Pollution Filter 2". Mint in Case. Astronomik has re-designed all of their photographic filters. All the important emission lines, as well as the spectral region that the very well dark adapted eye can see, can pass through the filter.
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Used once. In perfect condition.
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A cracking quality Light Pollution filter from Astronomik.
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