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Filters for Infrared Photography - The Skeptic's Guide to Infrared Photography
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Astronomik MaxFR OIII 6 nm CCD Round 36 mm Filter - OIII6-MAXFR-36
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A new material can filter nanometer-sized molecules at 10 to 100 times the rate of commercial membranes - Haptic
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Series 250-AF Inclined Manometer Air Filter Gages | Dwyer
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Baader Ultra-Narrowband CMOS-Optimized Filter Set, H-Alpha, OIII, and SII | High Point Scientific
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Astronomik H-alpha 6 nm CCD XT Clip Filter for Canon EOS (APS-C) | Extra-Thin for Wide Field Imaging
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