Filters (50)
Static, script-free list for people, search engines and AI agents. Machine-readable data: data/filters.json (field reference in SCHEMA.md). Prices are typical new street prices in US dollars; check retailers before buying.
| Product | Type | Lines | Bandwidth nm | Camera | Sizes | Price for | USD | Status |
|---|---|---|---|---|---|---|---|---|
| Antlia 3nm Pro SHO Narrowband Filter Set A matched set of 3 nm Pro Hα, OIII and SII narrowband filters for mono cameras and SHO imaging. | narrowband | sii, ha, oiii | 3 | mono | 1.25in, 2in, 36mm, 50mm | 2in | 1300 | current |
| Antlia ALP-T Dual Band 3nm A 3 nm Hα and OIII dual-band filter for one-shot colour cameras, intended for optical systems at f/4 and slower. | dual-band | ha, oiii | 3 | color | 1.25in, 2in, 36mm, 50mm | 2in | 430 | current |
| Antlia ALP-T Dual Band 5nm A 5 nm Hα and OIII dual-band filter for one-shot colour cameras, made for systems slower than f/4, with a separate Highspeed version for f/2.2 to f/3.6. | dual-band | ha, oiii | 5 | color | 1.25in, 2in, 36mm, 50mm | 2in | 420 | current |
| Antlia V-Pro LRGB Filter Set A matched L, R, G and B filter set from Antlia's V-Pro line for full-colour imaging with mono cameras. | lrgb | mono | 1.25in, 2in, 36mm, 50mm | 2in | 520 | current | ||
| Antlia V-Series L Luminance Filter A luminance filter that blocks UV and IR light and can be used as a UV/IR cut filter with mono and colour cameras. | uv-ir-cut | any | 1.25in | 1.25in | 85 | current | ||
| Astronomik CLS Filter A City Light Suppression filter for visual and photographic use that blocks sodium and mercury lamp light under suburban and city skies. | light-pollution | any | 1.25in, 2in, 31mm, 36mm, 50mm, clip-in | 2in | 200 | current | ||
| Astronomik Deep-Sky RGB Filter Set A Deep-Sky RGB filter set for mono cameras with matched red, green and blue channels for colour imaging. | lrgb | mono | 1.25in, 2in, 31mm, 36mm, 50mm | 2in | 430 | current | ||
| Astronomik L-2 UV-IR Block Filter A UV-IR block luminance filter that stops ultraviolet and infrared light from softening stars, for mono and colour cameras and DSLRs. | uv-ir-cut | any | 1.25in, 2in, 31mm, 36mm, 50mm, clip-in | 2in | 150 | current | ||
| Astronomik L-3 UV-IR Block Filter A UV-IR block luminance filter from Astronomik for mono cameras, DSLRs and mirrorless cameras, used to keep stars sharp. | uv-ir-cut | any | 1.25in, 2in, 31mm, 36mm, 50mm, clip-in | 2in | 150 | current | ||
| Astronomik MaxFR H-alpha 6nm Filter A 6 nm Hα narrowband filter from Astronomik's MaxFR range for mono cameras and narrowband imaging. | narrowband | ha | 6 | mono | 1.25in, 2in, 31mm, 36mm, 50mm | 2in | 330 | current |
| Astronomik OIII 12nm Filter A 12 nm OIII filter for visual nebula viewing and imaging that passes the 496 and 501 nm oxygen lines. | visual-nebula | oiii | 12 | any | 1.25in, 2in, 31mm, 36mm, 50mm | 2in | 290 | current |
| Astronomik ProPlanet 742 IR Pass Filter An infrared-pass filter that transmits light beyond 742 nm to cut atmospheric turbulence and sharpen planetary and lunar images. | planetary | any | 1.25in, 2in | 1.25in | 110 | current | ||
| Astronomik UHC Filter A UHC nebula filter that passes the Hβ and OIII lines while cutting skyglow, for visual use and imaging. | visual-nebula | hb, oiii | any | 1.25in, 2in | 2in | 190 | current | |
| Baader CMOS-Optimized LRGB Filter Set An LRGB filter set optimised for modern CMOS mono cameras, for building colour images of galaxies, clusters and nebulae. | lrgb | mono | 1.25in, 31mm, 36mm, 2in, 50mm | 2in | 440 | current | ||
| Baader IR-Pass Filter 685nm An infrared-pass filter transmitting light beyond 685 nm to steady planetary and lunar images in poor seeing. | planetary | any | 1.25in, 2in | 1.25in | 90 | current | ||
| Baader Moon & Skyglow Filter A broadband filter that suppresses skyglow from artificial lighting and improves contrast on the Moon and planets, for visual use and imaging. | light-pollution | any | 1.25in, 2in | 2in | 150 | current | ||
| Baader Neodymium Filter A neodymium-glass filter that boosts contrast and colour on the Moon and planets and slightly reduces light pollution at the eyepiece. | planetary | any | 1.25in, 2in | 2in | 120 | current | ||
| Baader Neutral Density Filter ND 0.9 A neutral density filter that cuts the brightness of the Moon to about an eighth for comfortable viewing. | planetary | any | 1.25in, 2in | 1.25in | 50 | current | ||
| Baader UHC-S Filter A UHC nebula filter that passes the Hβ and OIII emission lines while cutting light pollution, for visual use and imaging. | visual-nebula | hb, oiii | any | 1.25in, 2in | 2in | 140 | current | |
| Baader Ultra-Narrowband Filter Set 3.5/4nm A set of ultra-narrowband filters (Hα 3.5 nm, OIII 4 nm, SII 4 nm) for mono cameras and SHO imaging. | narrowband | sii, ha, oiii | 4 | mono | 1.25in, 31mm, 36mm, 2in, 50mm | 2in | 950 | current |
| Baader UV/IR Cut L-Filter A UV/IR cut luminance filter that blocks ultraviolet and infrared light for sharp stars with mono and colour cameras. | uv-ir-cut | any | 1.25in, 2in, 31mm, 36mm, 50mm | 2in | 130 | current | ||
| Celestron UHC/LPR Filter A UHC/LPR nebula filter that blocks sodium and mercury lamp light and lifts the contrast of emission nebulae at the eyepiece. | visual-nebula | hb, oiii | any | 1.25in | 1.25in | 65 | current | |
| Chroma 3nm Hα/OIII/SII Narrowband Filter Set A premium set of 3 nm Hα, OIII and SII narrowband filters for mono cameras, aimed at narrow-band imaging from bright skies. | narrowband | sii, ha, oiii | 3 | mono | 1.25in, 31mm, 36mm, 2in, 50mm | 2in | 1400 | current |
| DGM Optics NPB Filter A narrow-pass-band nebula filter that passes the OIII, Hβ and Hα lines for visual observing and imaging. | visual-nebula | hb, oiii, ha | any | 1.25in, 2in | 2in | 190 | current | |
| IDAS LPS-D1 A broadband light pollution suppression filter for DSLR and astronomy cameras that blocks sodium and mercury lamp emission. | light-pollution | any | 1.25in, 2in | 2in | 170 | current | ||
| IDAS LPS-D3 A broadband IDAS light pollution suppression filter for DSLR and astronomy cameras used under bright urban skies. | light-pollution | any | 1.25in, 2in | 2in | 200 | current | ||
| IDAS LPS-P2 A broadband light pollution suppression filter from IDAS for DSLR and astronomy cameras, sold mounted or as an unmounted 50 mm filter. | light-pollution | any | 1.25in, 2in, 50mm | 2in | 170 | current | ||
| Lumicon H-Beta Filter An Hβ line filter for visual observers, used to detect faint targets such as the Horsehead and California nebulae. | visual-nebula | hb | any | 1.25in, 2in | 2in | 200 | current | |
| Lumicon OIII Filter Gen 3 An OIII line filter that lifts planetary nebulae, supernova remnants and faint emission nebulae for visual observers. | visual-nebula | oiii | any | 1.25in, 2in | 2in | 200 | current | |
| Lumicon UHC Filter Gen 3 A UHC filter that passes the Hβ and OIII lines to lift emission nebulae at the eyepiece under light-polluted skies. | visual-nebula | hb, oiii | any | 1.25in, 2in | 2in | 180 | current | |
| Optolong CLS A City Light Suppression broadband filter that blocks sodium and mercury street-lamp light, for visual use and imaging with DSLR, colour and mono cameras. | light-pollution | any | 1.25in, 2in, 31mm, 36mm, 50mm, clip-in | 2in | 150 | current | ||
| Optolong H-Alpha 7nm A 7 nm hydrogen-alpha narrowband filter for mono cameras that isolates Hα emission from nebulae through light pollution and moonlight. | narrowband | ha | 7 | mono | 1.25in, 2in, 31mm, 36mm, 50mm | 2in | 230 | current |
| Optolong L-eNhance A tri-band filter passing Hα, Hβ and OIII for one-shot colour and DSLR cameras, cutting light pollution while keeping star colours. | multi-band | ha, hb, oiii | color | 1.25in, 2in, 31mm, 36mm, 50mm, clip-in | 2in | 230 | current | |
| Optolong L-eXtreme A 7 nm Hα and OIII dual-band filter for one-shot colour and DSLR cameras that isolates emission nebulae from heavy light pollution. | dual-band | ha, oiii | 7 | color | 1.25in, 2in, 31mm, 36mm, 50mm, clip-in | 2in | 310 | current |
| Optolong L-Pro A broadband light pollution filter that suppresses sodium and mercury street-lamp lines while keeping natural colour for galaxies, clusters and nebulae. | light-pollution | any | 1.25in, 2in, 31mm, 36mm, 50mm, clip-in | 2in | 200 | current | ||
| Optolong L-Quad Enhance A quad-band light pollution suppression filter for colour cameras that passes the Hβ, OIII, Hα and SII emission lines. | multi-band | ha, oiii, sii, hb | color | 2in | 2in | 220 | current | |
| Optolong L-Ultimate A 3 nm Hα and OIII dual-band filter for one-shot colour and DSLR cameras, a tighter option than the 7 nm L-eXtreme for strong light pollution. | dual-band | ha, oiii | 3 | color | 1.25in, 2in, 31mm, 36mm, 50mm | 2in | 390 | current |
| Optolong LRGB Filter Set An L, R, G and B filter set for mono cameras, for building full-colour images of galaxies, clusters and reflection nebulae. | lrgb | mono | 1.25in, 2in, 31mm, 36mm, 50mm | 2in | 360 | current | ||
| Optolong OIII 6.5nm A 6.5 nm OIII narrowband filter for mono cameras that isolates the oxygen emission of planetary and emission nebulae. | narrowband | oiii | 6.5 | mono | 1.25in, 2in, 31mm, 36mm, 50mm | 2in | 230 | current |
| Optolong SHO Narrowband Filter Set 3nm A three-filter 3 nm Hα, OIII and SII set for mono cameras, for narrow-band SHO imaging in bright skies or under a strong Moon. | narrowband | sii, ha, oiii | 3 | mono | 1.25in, 2in, 31mm, 36mm, 50mm | 2in | 1200 | current |
| Optolong SHO Narrowband Filter Set 7nm A three-filter narrowband set (Hα 7 nm, OIII 6.5 nm, SII 6.5 nm) for mono cameras to shoot Hubble-palette SHO images. | narrowband | sii, ha, oiii | 7 | mono | 1.25in, 2in, 31mm, 36mm, 50mm | 2in | 670 | current |
| Optolong SII 6.5nm A 6.5 nm SII narrowband filter for mono cameras that isolates the sulphur emission used for SHO colour palettes. | narrowband | sii | 6.5 | mono | 1.25in, 2in, 31mm, 36mm, 50mm | 2in | 230 | current |
| Orion UltraBlock Narrowband Nebula Filter A narrowband nebula filter that passes the OIII and Hβ lines and blocks most skyglow, for visual observing. | visual-nebula | hb, oiii | any | 1.25in, 2in | 2in | 110 | current | |
| SVBONY SV220 Dual-Band Filter A 7 nm Hα and OIII dual-band filter from SVBONY for one-shot colour and DSLR cameras. | dual-band | ha, oiii | 7 | color | 1.25in, 2in | 2in | 80 | current |
| Tele Vue Bandmate Type 2 Nebustar A Tele Vue UHC-type nebula filter passing the Hβ and OIII lines for visual observing under light-polluted skies. | visual-nebula | hb, oiii | any | 1.25in, 2in | 2in | 350 | current | |
| Tele Vue Bandmate Type 2 OIII A Tele Vue OIII line filter for visual observing of planetary nebulae, supernova remnants and emission nebulae. | visual-nebula | oiii | any | 1.25in, 2in | 2in | 320 | current | |
| ZWO 7nm Narrowband Filter Set A three-filter 7 nm Hα, OIII and SII narrowband set from ZWO for mono cameras and filter wheels. | narrowband | sii, ha, oiii | 7 | mono | 1.25in, 31mm, 36mm, 2in | 2in | 650 | current |
| ZWO Duo-Band Filter A dual-band filter passing Hα (15 nm) and OIII (35 nm), aimed at ASI colour cameras but usable with any camera, in 1.25 in and 2 in cells. | dual-band | ha, oiii | 35 | color | 1.25in, 2in | 2in | 170 | current |
| ZWO LRGB Filter Set A matched L, R, G and B filter set from ZWO for building colour images with mono cameras and filter wheels. | lrgb | mono | 1.25in, 31mm, 36mm, 2in | 2in | 330 | current | ||
| ZWO UV/IR Cut Filter A UV/IR cut luminance filter that blocks ultraviolet and infrared light to keep star halos tight with colour and mono cameras. | uv-ir-cut | any | 1.25in, 2in | 2in | 70 | current |