ZWO
ZWO H-alpha (Ha) Narrowband 7nm Filter 1.2... $174.00
Narrowband filter does not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. Description The ZWO H-Alpha filter has a bandpass of 7nm and passes light at 656nm wavelength, light transmission rate comes up to 80%. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution, just prepare to experience the infinite fun with it! It can reduce the transmission of certain wavelengths of light, specifically those produced...
ZWO
ZWO OIII Narrowband 7nm Filter 1.25" (ZWO-... $174.00
Narrowband filter does not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. Description The ZWO narrowband O-III 7nm filter is designed for nebula observation allowing the 7nm bandwidth of light centred on a wavelength of 500nm through, which corresponds to OIII emission lines, blocking out all other light. Adding the ZWO O-III Narrowband filter to your imaging collection will help you go beyond the RGB imaging and will help capture your favourite nebulas in a totally new light, no matter how...
ZWO
ZWO 1.25" SII 7nm Filter (ZWO-SII7NM1.25) $174.00
Narrowband filter does not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. Description The ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation. It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolour CCD astrophotography. It can reduce the transmission of certain wavelengths of light, specifically those produced by artificial light including...
ZWO
ZWO 31mm Ha 7nm Unmounted Filter (ZWO-HA7N... $201.00
Narrowband filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. Description The ZWO H-Alpha filter has a bandpass of 7nm and passes light at 656nm wavelength, light transmission rate comes up to 80%. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution, just prepare to experience the infinite fun with it! It can reduce the transmission of certain wavelengths of light, specifically those produced...
ZWO
ZWO 31mm OIII 7nm Unmounted Filter (ZWO-OI... $201.00
Narrowband filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. Description The ZWO narrowband O-III 7nm filter is designed for nebula observation allowing 7nm bandwidth of light centred on a wavelength of 500nm through, which corresponds to OIII emission lines, blocking out all other light. Adding the ZWO O-III Narrowband filter to your imaging collection will help you go beyond the RGB imaging and will help capture your favourite nebulas in a totally new light, no matter how polluted...
ZWO
ZWO 31mm SII 7nm Filter Unmounted (ZWO-SII... $201.00
Narrowband filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. Description The ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation . It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolour CCD astrophotography. It can reduce the transmission of certain wavelengths of light, specifically those produced by artificial light...
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 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 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....
ZWO
ZWO 36mm Ha 7nm Unmounted Filter (ZWO-HA7N... $228.00
Narrowband filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. Description The ZWO H-Alpha filter has a bandpass of 7nm and passes light at 656nm wavelength, light transmission rate comes up to 80%. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution, just prepare to experience the infinite fun with it! It can reduce the transmission of certain wavelengths of light, specifically those produced...
ZWO
ZWO 36mm OIII 7nm Unmounted Filter (ZWO-OI... $228.00
Narrowband filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. Description The ZWO narrowband O-III 7nm filter is designed for nebula observation allowing 7nm bandwidth of light centred on a wavelength of 500nm through, which corresponds to OIII emission lines, blocking out all other light. Adding the ZWO O-III Narrowband filter to your imaging collection will help you go beyond the RGB imaging and will help capture your favourite nebulas in a totally new light, no matter how polluted...
ZWO
ZWO 36mm SII 7nm Unmounted Filter (ZWO-SII... $228.00
Narrowband filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula. Description The ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation . It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolour CCD astrophotography. It can reduce the transmission of certain wavelengths of light, specifically those produced by artificial light...

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