Baader's new Narrowband CCD Emission Line & H-Alpha 36mm unmounted Filters with 2mm glass deliver the absolute highest contrast deep sky images in H-Alpha, Oxygen III, and Sulfur-II, with the shortest exposures possible.
With this addition, Baader offers the complete line of LRGB (plus the emission line filters H-alpha / S II /O III and H-beta, all sold separately) in unmatched quality grade, all being parfocal and made of precision optically polished glass.
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