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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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  • Baader Planetarium Baader UV IR-Cut L Filter - 2" Mounted - FUVIR-2
    $132.00
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    No free shipping.
  • Baader Planetarium 2
    Baader Planetarium Baader Planetarium 2" IR Pass (685 nm) Filter - FIRP-2
    $144.00
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    No free shipping.
  • Baader Planetarium 2
    Baader Planetarium Baader Visual OIII Nebula Filter - 2" - FOIII-2
    $189.00
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    No free shipping.
  • Baader 2
    Baader Planetarium Baader UHC-S Nebula Filter - L Booster - 2" - FUHC-2
    $147.00
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    No free shipping.
  • Baader 50.5 mm Round Unmounted UV-IR Cut/L Filter
    Baader Planetarium Baader UV-IR-Cut L Filter - 50.4 mm Round Unmounted - FUVIR-RD50
    $156.00 $124.80
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    No free shipping.
  • Lumicon Lumicon 2" UV/Infrared Filter - LF3145
    $255.00 $204.00
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    free shipping
  • Orion Orion SkyGlow Imaging 2" Filter - 05561
    $159.99
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    No free shipping.
  • Baader 2
    Baader Planetarium Baader 35 nm Midband H-Alpha CCD Filter - 2" Mounted - FHAL-2
    $199.00
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    free shipping
  • Baader Planetarium 2
    Baader Planetarium Baader H-Alpha 7 nm Narrowband CCD Filter - 2" Mounted - FHALN-2
    $309.00
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    free shipping
  • Baader 8.5 nm H-Beta Filter
    Baader Planetarium Baader 8.5 nm H-Beta Narrowband CCD Filter - 2" Mounted - FHBN-2
    $219.00
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    free shipping
  • Baader Planetarium 2
    Baader Planetarium Baader OIII 8.5 nm Narrowband CCD Filter - 2" Mounted - FOIIIN-2
    $227.00
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    free shipping
  • Baader Planetarium 2
    Baader Planetarium Baader S-II 8 nm Narrowband CCD Filter - 2" Mounted - FSIIN-2
    $234.00
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    free shipping
  • Astronomik ProPlanet 742 IR-Pass Filter - 2
    Astronomik Filters Astronomik ProPlanet IR - 742 Filter - 2" Round Mounted - P742-2
    $99.95
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    free shipping
  • Astronomik 2
    Astronomik Filters Astronomik SII 12 nm CCD Filter - 2" - SII-2
    $289.95
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    free shipping
  • Astronomik 2
    Astronomik Filters Astronomik H-Alpha 12 nm CCD Filter - 2" Round Mounted - HA12-2
    $289.95
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    free shipping
  • Astronomik OIII 12 nm CCD Filter - 2
    Astronomik Filters Astronomik OIII 12 nm CCD Filter - 2" Round Mounted - OIIICCD-2
    $289.95
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    free shipping
  • Astronomik 2
    Astronomik Filters Astronomik OIII Visual Filter - 2" Round Mounted - OIII-2
    $219.95
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    free shipping
  • Baader H-alpha High Speed f/2 CCD Filter
    Baader Planetarium Baader f/2 High Speed H-Alpha CCD Filter - 2" Mounted - FHALHS-2
    $389.00
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    free shipping
  • Baader OIII High Speed f/2 CCD Filter
    Baader Planetarium Baader f/2 High Speed OIII CCD Filter - 2" Mounted - FOIIIHS-2
    $329.00
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    free shipping
  • Baader SII High Speed f/2 CCD Filter
    Baader Planetarium Baader f/2 High Speed SII CCD Filter - 2" Mounted - FSIIHS-2
    $352.00
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    free shipping
  • Optolong Optolong L-Pro Filter - 2" Mounted - LPRO-200
    $199.00
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    free shipping
  • Optolong Optolong 25nm OIII Filter - 2" Mounted - OIII-200
    $108.00
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    free shipping
  • Optolong Optolong OIII CCD 6.5nm Filter - 2" Mounted - OIIICCD65-200
    $255.00
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    free shipping
  • Optolong Optolong SII CCD 6.5nm Filter - 2" Mounted - SIICCD65-200
    $250.00
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    free shipping
  • Optolong Optolong H-Alpha 7nm CCD Filter - 2" Mounted - HAL7-200
    $259.00
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    free shipping
  • Optolong Optolong UV-IR Cut Filter - 2" Mounted - UVIR-200
    $65.00
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    free shipping
  • Optolong Optolong Night Sky H-Alpha Filter - 2" Mounted - NSHA-200
    $119.00
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    free shipping
  • Optolong Optolong IR Pass 685nm Filter - 2" Mounted - IRPS685-200
    $119.00 $95.20
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    free shipping
  • Explore Scientific 2
    Explore Scientific Explore Scientific 2" OIII Nebula Filter - 310200
    $119.99
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    No free shipping.
  • High Point High Point IR Blocking Filter - 2" - IRBF2
    $24.95
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    No free shipping.
  • Astronomik 6 nm H-Alpha Filter in 2
    Astronomik Filters Astronomik H-Alpha 6 nm CCD Filter - 2" Round Mounted - HA6-2
    $469.95
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    free shipping
  • Daystar 2
    DayStar Filters Daystar 2" UV/IR Filter - DSIUV2
    $125.00
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  • Astronomik UV-IR L2 Luminance Filter - 2
    Astronomik Filters Astronomik L-2 UV-IR Blocking Filter - 2" Round Mounted - L2-2
    $109.95
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    free shipping
  • ZWO 2
    ZWO Astronomy Cameras ZWO 2" IR-Cut Filter - IRCUT2
    $49.00
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    No free shipping.
  • Astronomik 2
    Astronomik Filters Astronomik OIII 6 nm CCD Filter - 2" Round Mounted - OIIICCD6-2
    $469.95
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    free shipping
  • Astronomik 2
    Astronomik Filters Astronomik SII 6 nm CCD Filter - 2" - SII6-2
    $469.95
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    free shipping
  • Astronomik 2
    Astronomik Filters Astronomik IR Blocking Filter - 2" Round Mounted - IR-2
    $79.95
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    free shipping
  • Astronomik L-1 UV-IR Blocking Filter - 2
    Astronomik Filters Astronomik L-1 UV-IR Blocking Filter - 2" Round Mounted - L1-2
    $129.95
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    free shipping
  • Astronomik L-3 Luminance UV-IR Blocking Filter - 2
    Astronomik Filters Astronomik L-3 UV-IR Blocking Filter - 2" Round Mounted - L3-2
    $129.95
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    free shipping
  • Astronomik 2
    Astronomik Filters Astronomik ProPlanet 642 IR Pass Filter - 2" Round Mounted - P642-2
    $139.95
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    free shipping
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