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Let our non-commissioned product advisors help you select the best filter to achieve your observation goals! Whether you need filters for astrophotography or visual use we'll help you find the perfect filter to complement your equipment.


Bring out as much detail as possible in your celestial targets with OIII, ultra high contrast, and hydrogen filters perfect for astrophotography. Or get more details on planets with neutral density, Skyglow, Longpass and color filters. We offer high-quality deep sky and planetary filters from manufacturers like Lumicon, Baader Planetarium, Celestron, TeleVue, Meade, Orion, High Point & Thousand Oaks.

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  • Optolong UBVRI Filter Set
    Optolong Optolong UBVRI Filter Set - 1.25" Mounted - UBVRI-125
    $685.00 $548.00
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  • Optolong UBVRI Filter Set
    Optolong Optolong UBVRI Filter Set - 2" Mounted - UBVRI-200
    $830.00
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  • Optolong Optolong UBVRI Filter Set - 31mm Unmounted - UBVRI-31U
    $740.00 $481.00
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  • Baader Planetarium Ultraviolet Photometric Filter - 1.25
    Baader Planetarium Baader 1.25" Photometric Filter - Ultraviolet - FUBVRI-U
    $197.00
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  • Baader Planetarium Visual Photometric Filter - 1.25
    Baader Planetarium Baader 1.25" Photometric Filter - Visual - FUBVRI-V
    $197.00
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  • Baader Planetarium Blue Photometric Filter - 1.25
    Baader Planetarium Baader 1.25" Photometric Filter - Blue - FUBVRI-B
    $197.00
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  • Baader Planetarium Red Photometric Filter - 1.25
    Baader Planetarium Baader 1.25" Photometric Filter - Red - FUBVRI-R
    $197.00
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  • Baader Planetarium 1.25
    Baader Planetarium Baader 1.25" Photometric Filter - Infrared - FUBVRI-I
    $197.00
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  • Baader 1.25
    Baader Planetarium Baader 1.25" UBVRI Photometric Filter Set - FUBVRIS-1
    $899.00
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  • Astrodon Sloan Generation 2 U Filter - 1.25
    Astrodon Astrodon Photometric Sloan Gen2 U Filter - 320/385 nm - 1.25" Threaded Cell - U2-27R
    $212.00
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  • Astrodon Edge-Blackened Sloan Generation 2 Filters with Transmission Chart
    Astrodon Astrodon Photometric Sloan Gen2 G Filter - 401/550 nm - 1.25" Threaded Cell - G2-27R
    $212.00
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  • Astrodon Edge-Blackened Sloan Generation 2 Filters with Transmission Chart
    Astrodon Astrodon Photometric Sloan Gen2 R Filter - 562/695 nm - 1.25" Threaded Cell - R2-27R
    $212.00
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  • Astrodon Edge-Blackened Sloan Generation 2 Filters with Transmission Chart
    Astrodon Astrodon Photometric Sloan Gen2 I Filter - 695/844 nm - 1.25" Threaded Cell - I2-27R
    $212.00
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  • Astrodon Edge-Blackened Sloan Generation 2 Filters
    Astrodon Astrodon Photometrics Sloan Gen2 Y Filter - 950/1058 nm - 1.25" Threaded Cell - Y2-27R
    $212.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins UV Filter - 1.25" Threaded Cell - UV-27R
    $216.00
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  •  Photometric Johnson-Cousins B Filter
    Astrodon Astrodon Photometric Johnson-Cousins B Filter - 1.25" Threaded Cell - B-27R
    $216.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins V Filter - 1.25" Threaded Cell - V-27R
    $216.00
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  • Photometric Johnson-Cousins Rc Filter
    Astrodon Astrodon Photometric Johnson-Cousins Rc Filter - 1.25" Threaded Cell - RC-27R
    $216.00
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  • Photometric Johnson-Cousins Ic Filter - 1.25
    Astrodon Astrodon Photometric Johnson-Cousins Ic Filter - 1.25" Threaded Cell - IC-27R
    $216.00
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  • Astrodon Edge-Blackened Sloan Generation 2 Filters
    Astrodon Astrodon Photometrics Sloan Gen2 Z Filter - >826 nm - 1.25" Threaded Cell - Z2-27R
    $212.00
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  • Astrodon Edge-Blackened Sloan Generation 2 Filters
    Astrodon Astrodon Photometrics Sloan Gen2 Z-S Filter - 826/920 nm - 1.25" Threaded Cell - Z-S2-27R
    $212.00
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  • Astrodon 50 mm Round Unmounted Edge-Blackened Photometric Sloan Gen2 U Filter
    Astrodon Astrodon Photometric Sloan Gen2 U Filter - 320/385 nm - 49.7 mm Round Unmounted - U2-50R
    $500.00
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  • Astrodon Edge-Blackened Sloan Generation 2 G Filter - 49.7 mm Round Unmounted
    Astrodon Astrodon Photometric Sloan Gen2 G Filter - 401/550 nm - 49.7 mm Round Unmounted - G2-50R
    $500.00
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  • Astrodon 49.7 mm Round Unmounted Generation 2 Edge-Blackened Sloan R Filter
    Astrodon Astrodon Photometric Sloan Gen2 R Filter - 562/695 nm - 49.7 mm Round Unmounted - R2-50R
    $500.00
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  • Astrodon Photometric Sloan Generation 2 I Filter - 49.7 mm Round Unmounted
    Astrodon Astrodon Photometric Sloan Gen2 I Filter - 695/844 nm - 49.7 mm Round Unmounted - I2-50R
    $500.00
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  • Astrodon 49.7 mm Edge-Blackened Photometrics Sloan Gen2 Y Filter - Round, Unmounted
    Astrodon Astrodon Photometrics Sloan Gen2 Y Filter - 950/1058 nm - 49.7 mm Round Unmounted - Y2-50R
    $500.00
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  • Astrodon Edge-Blackened Sloan Gen2 Z Filter - 49.7 mm Round Unmounted
    Astrodon Astrodon Photometrics Sloan Gen2 Z Filter - >826 nm - 49.7 mm Round Unmounted - Z2-50R
    $500.00
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  • Astrodon 49.7 mm Round Unmounted Edge-Blackened Sloan Gen2 Z-S Filter
    Astrodon Astrodon Photometrics Sloan Gen2 Z-S Filter - 826/920 nm - 49.7 mm Round Unmounted - Z-S2-50R
    $500.00
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  • Astrodon Square Unmounted Sloan Generation 2 Edge-Blackened U Filter - 49.7 mm x 49.7 mm
    Astrodon Astrodon Photometric Sloan Gen2 U Filter - 320/385 nm - 49.7 mm Square Unmounted - U2-50S
    $550.00
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  • Astrodon 49.7 mm Square Unmounted Edge-Blackened Photometric Sloan Gen2 G Filter
    Astrodon Astrodon Photometric Sloan Gen2 G Filter - 401/550 nm - 49.7 mm Square Unmounted - G2-50S
    $550.00
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  • Astrodon Edge-Blackened 49.7 mm Square Unmounted Photometric Sloan Generation 2 R Filter
    Astrodon Astrodon Photometric Sloan Gen2 R Filter - 562/695 nm - 49.7 mm Square Unmounted - R2-50S
    $550.00
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  • Astrodon Edge-Blackened Photometric Sloan Gen2 I Filter - 49.7 x 49.7 mm Unmounted
    Astrodon Astrodon Photometric Sloan Gen2 I Filter - 695/844 nm - 49.7 mm Square Unmounted - I2-50S
    $550.00
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  • Astrodon 49.7 mm Square Unmounted Sloan Generation 2 Photometric Y Filter - Edge-Blackened
    Astrodon Astrodon Photometrics Sloan Gen2 Y Filter - 950/1058 nm - 49.7 mm Square Unmounted - Y2-50S
    $550.00
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  • Astrodon 49.7 mm x 49.7 mm Unmounted Sloan Gen2 Edge-Blackened Z Filter
    Astrodon Astrodon Photometrics Sloan Gen2 Z Filter - >826 nm - 49.7 mm Square Unmounted - Z2-50S
    $550.00
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  • Astrodon 49.7 mm Square Unmounted Edge-Blackened Sloan Gen2 Z-S Filter
    Astrodon Astrodon Photometrics Sloan Gen2 Z-S Filter - 826/920 nm - 49.7 mm Square Unmounted - Z-S2-50S
    $550.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins UV Filter - 49.7 mm Round Unmounted - UV-50R
    $500.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins B Filter - 49.7 mm Round Unmounted - B-50R
    $500.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins V Filter - 49.7 mm Round Unmounted - V-50R
    $500.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins Rc Filter - 49.7 mm Round Unmounted - RC-50R
    $500.00
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  • Astrodon Johnson-Cousins UVBRI Photometric Filters
    Astrodon Astrodon Photometric Johnson-Cousins Ic Filter - 49.7 mm Round Unmounted - IC-50R
    $500.00
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