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and bright deep-sky objects like nebulae and galaxies
The extra low dispersion glass maintains image quality across the field by reducing chromatic aberration and improving contrast
the binoculars are waterproof and feature twist-up eyecups with 15
these binoculars are waterproof
the Shasta Ridge 20-60x80 delivers the magnification
Nebula Filter Oxygen III 2.0-inch tdm and bright deep-sky objects likeExplore 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
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