S-II Filters
4 products
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Optolong SII-CCD 6.5nm (1.25'') CCD Filter [OPTO-SII-CCD65-125]
$159.00 USD1 in stockBack Order / Waiting ListOptolong: Extra narrow band SII-CCD 6.5nm filter (Sulful 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 vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
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Optolong SII-CCD 6.5nm (2'') CCD Filter [OPTO-SII-CCD65-2]
$250.00 USD4 in stockBack Order / Waiting ListOptolong: Extra narrow band SII-CCD 6.5nm filter (Sulful 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 vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
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Optolong SII-CCD 6.5nm (Round 31mm Without Housing) CCD Filter [OPTO-SII-CCD65-31]
$193.00 USDOptolong: Extra narrow band SII-CCD 6.5nm filter (Sulful 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 vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
Out of Stock -
Optolong SII-CCD 6.5nm (Round 36mm Without Housing) CCD Filter [OPTO-SII-CCD65-36]
$199.00 USDOptolong: Extra narrow band SII-CCD 6.5nm filter (Sulful 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 vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
Out of Stock