Optolong L-eXtreme Dual Band Filter - 1.25" 120 mm Telescopes The iconic 8-inch Schmidt-Cassegrain Celestron
Optolong L-eXtreme Dual Band Filter - 1.25" 120 mm Telescopes The iconic 8-inch Schmidt-Cassegrain CelestronThe L eXtreme from Optolong is a dual band filter that passes Ha and OIII emission lines. The advantage of the L eXtreme filter over the L eNhance, which is a tri band filter, is that there are no transmission between the H beta and OIII lines, as there is no nebula emission lines there. In this case, it isn't letting light pollution come through so that maximizes a nebula's signal and makes the sky background darker while imaging. The L eXtreme
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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14