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Linking it with optical glass of high refractive index allows us to attain advanced chromatic aberration correction
and protecting it while it is in storage or transit should be a priority
A 305mm mirror collects more than 1
you could also use this scope for great terrestrial (daytime) viewing
Explore Scientific Nebula Filter 2" Oxygen-III Dew Shields By Make_Orion Linking it with optical glassExplore Scientific Nebula Filter 2" OIII Introducing this High quality and functional Nebula Filter 2" OIII by Explore Scientific. This Nebula Filter 1. 25" O III Range from 483nm to 511nm with a peak at 496nm. Transmission 96. 7% Oxygen III is the highest contrast Nebula Filter in the series, a line filter for only the two oxygen emission lines. An excellent choice for observations of supernova remnants and other nebulae that glow in OIII. Different