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ZWO S II 31mm Unmounted Narrowband Filter
This filter is for use with narrowband astrophotography . Sulphur II light has a wavelength of 672.4nm, and is the most commonly-used narrowband frequency. It can be used as part of three-band or other false-colour images About ZWO Optical Established in | $24995 |  | |
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 NiSi M75-II 75mm Filter Holder with True Colour NC CPL Rubber Monkey
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 A density adjustable filter with an ND range from 1.5 to 9 f-stops ... Bay Park Photos
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 Variable 0.6 to 1.5 Neutral Density Reduces Exposure by 2 to 5... digiDIRECT
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 Hoya 82mm HMC Close-Up Filter Set II (+1, +2,... Rubber Monkey
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 Pure optical glass No color cast Ultra Wide Structure Optical... digiDIRECT
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 For Sigma 12-24mm f/4.5-5.6 DG HSM II Haida 150... digiDIRECT
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 Variable 1.8 to 2.7Neutral Density Reduces Exposure by 6... digiDIRECT
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 Eliminate Annoying Glares Of Light Enhances The Color Saturation... digiDIRECT
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