Optolong
Optolong H-Alpha 7nm Narrowband Filter 36m... $249.95
Optolong improved version of H-Alpha 7nm filter is the popular narrowband filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Better choice of narrowband H-alpha astrophotography filter for highest contrast and revealing subtle nebula details. Description Suitable for viewing on faint emission nebula of H-Alpha line in full moonlight or in severe light pollution....
Optolong
Optolong Hydrogen-Alpha 7nm Narrowband Fil... $224.95
Optolong improved version of Hydrogen-Alpha 7nm filter is the popular narrowband filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Better choice of narrowband H-alpha astrophotography filter for highest contrast and revealing subtle nebula details. Description Suitable for viewing on faint emission nebula of Hydrogen-Alpha line in full moonlight or in severe light pollution....
Optolong
Optolong Hydrogen-Alpha 7nm Narrowband Fil... $331.95
Optolong improved version of Hydrogen-Alpha 7nm filter is the popular narrowband filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Better choice of narrowband H-alpha astrophotography filter for highest contrast and revealing subtle nebula details. Description Suitable for viewing on faint emission nebula of Hydrogen-Alpha line in full moonlight or in severe light pollution....
Optolong
Optolong OIII 6.5nm Narrowband Filter 1.25... $204.95
Optolong improved extra Narrowband OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Description OIII emits 495.9nm and 500.7nm and it is a blue-green coloured filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and...
Optolong
Optolong OIII 6.5nm Narrowband Filter 2" M... $325.95
Optolong improved extra Narrowband OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Description OIII emits 495.9nm and 500.7nm and it is a blue-green coloured filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and...
Optolong
Optolong OIII 6.5nm Narrowband Filter 36mm... $249.95
Optolong improved extra Narrowband OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Description OIII emits 495.9nm and 500.7nm and it is a blue-green coloured filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and...
Optolong
Optolong SHO 3nm Filter Kit 2" Mounted (OP... $1,555.00
Optolong SHO-3nm filter kit includes SII 3nm, H-Alpha 3nm, and OIII 3nm narrow band filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel. Corresponding with RGB channel (HA, OIII, SII), photographers can process Hubble images by astronomical post processing software. Description Extra narrowband SIICCD3nm filter (Sulfur II for CCD) is designed for nebula observation allowing 3nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and...
Optolong
Optolong SHO 3nm Filter Kit 36MM Unmounted... $1,279.00
Optolong SHO-3nm filter kit includes SII 3nm, H-Alpha 3nm, and OIII 3nm narrow band filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel. Corresponding with RGB channel (HA, OIII, SII), photographers can process Hubble images by astronomical post processing software. Description Extra narrowband SIICCD3nm filter (Sulfur II for CCD) is designed for nebula observation allowing 3nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and...
Optolong
Optolong SHO 7nm Filter Kit 36MM Unmounted... $709.00
Optolong SHO-7nm filter kit includes SII 7nm, H-Alpha 7nm, and OIII 6.5nm narrow band filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel. Corresponding with RGB channel (HA, OIII, SII), photographers can process Hubble images by astronomical post processing software. Description Extra narrowband SIICCD7nm filter (Sulfur II for CCD) is designed for nebula observation allowing 7nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and...
Optolong
Optolong SII 6.5nm Narrowband Filter 1.25"... $204.95
Optolong improved narrowband SII6.5nm filter (Sulfur II for CCD) is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Description Suitable for viewing on faint emission nebula of H-Alpha line in full moonlight or in severe light pollution. Hubble look of images can be made by the combination of H-alpha, OIII-CCD...
Optolong
Optolong SII 6.5nm Narrowband Filter 2" Mo... $325.95
Optolong improved narrowband SII6.5nm filter (Sulfur II for CCD) is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Description Suitable for viewing on faint emission nebula of H-Alpha line in full moonlight or in severe light pollution. Hubble look of images can be made by the combination of H-alpha, OIII-CCD...
Optolong
Optolong SII 6.5nm Narrowband Filter 36mm ... $249.95
Optolong improved narrowband SII6.5nm filter (Sulfur II for CCD) is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Description Suitable for viewing on faint emission nebula of H-Alpha line in full moonlight or in severe light pollution. Hubble look of images can be made by the combination of H-alpha, OIII-CCD...

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