Nebula Filter Oxygen III 1.25-inch
Explore 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 […]
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Nebula Filter Oxygen III 2.0-inch
Explore 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 […]
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Nebula Filter Oxygen III 1.25-inch 6.5nm
Features High quality Explore Scientific O-III filter Let only the oxygen emission lines “through” Absorbs all other emission lines Absorbs almost all of the artificial light Passband bandwidth: 6.5 nm Narrow-band design for difficult city conditions More contrast and details for all urban observers and astrophotographers An individual test report of this premium filter is […]
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Nebula Filter Oxygen III 2-inch 6.5nm
Features High quality Explore Scientific O-III filter Let only the oxygen emission lines “through” Absorbs all other emission lines Absorbs almost all of the artificial light Passband bandwidth: 6.5 nm Narrow-band design for difficult city conditions More contrast and details for all urban observers and astrophotographers An individual test report of this premium filter is […]
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