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Explore Scientific’s dual speed
With a 102mm aperture and a 1000mm focal length (f/9
due to the over-sized knurled knobs that are attached to the end of each cable
and dual primary mirror fans for fast cooling (AA batteries for fans sold separately)
This camera-specific bayonet adapter is tailored for Canon EOS DSLRs
Nebula Filter Oxygen III 1.25-inch eclipse Explore Scientific’s dual speedExplore Scientific Nebula Filter 1. 25" O III Range from 483nm to 511nm with peak at 496nm. Transmission 96. 7% Oxygen III This is the highest contrast Nebula Filter in the series, a line filter for only the two emission lines of oxygen. A great choice for observations of supernova remnants and other nebulae that glow in OIII. Other types of objects that glow in all parts of the visible spectrum (e. g. galaxies) are reduced visibly, but some normally
