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Has anyone ever tried the Baader Planetarium Moon and Skyglow filter? Here's what the seller says about it: "The Baader Planetarium Moon & Skyglow (Neodymium) filter brings an entirely unique approach to contrast enhancement and light pollution reduction. Based on earlier research at Carl Zeiss, Baader has developed a new filter that uses Neodymium glass which filters out a few specific wavelengths from streetlights as well as skyglow from the Moon. The unique spectral characteristics of Neodymium also boost color contrasts by isolating the Red, Green, and Blue regions (so-called RGB enhancement). The result is a filter that leaves natural colors intact, but enhanced."

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I have it, and to be honest, where it really shines is as a planet filter. It is marginally useful for deep sky viewing as it doesn't absorb alot of light, less than the broadband filters like the "Deep Sky". It does darken the sky background, so it could be useful for some deep sky viewing, but I usually use a narrowband filter on nebulae.

A couple of years ago I submitted this photo to a Cloudy Nights contest (I had no illusions of winning). It was mainly to demonstrate the effects of the M&S filter on the Pleiades that I experimented with shortly before.



I have other comparison images (not animated) using the Moon & Skyglow filter as well as the Celestron LPR filter HERE.

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