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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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  • Orion Orion SkyGlow Broadband Light Pollution Reduction Filter 2" - 05659
    $69.99
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  • Celestron 2
    Celestron Celestron Ultra High Contrast (UHC) Light Pollution Reduction 2" Filter - 94124
    $109.95 $92.95
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  • Orion Orion Ultrablock Narrowband Light Pollution Reduction Filter 2" - 05657
    $99.99
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    No free shipping.
  • Thousand Oaks Optical Thousand Oaks LP-2 Narrowband Nebula Filter - 1.25" - LP-225
    $89.00
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    free shipping
  • Celestron Celestron 1.25" Ultra High Contrast (UHC) Light Pollution Reduction Filter - 94123
    $79.95 $69.95
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  • Orion Orion Ultrablock Narrowband Light Pollution Reduction Filter 1.25" - 05654
    $79.99
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    No free shipping.
  • Orion Orion SkyGlow Broadband Light Pollution Reduction Filter 1.25" - 05660
    $49.99
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    No free shipping.
  • Astronomik 1.25
    Astronomik Filters Astronomik CLS Light Pollution Filter 1.25" - CLS-1
    $75.95
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    free shipping
  • Astronomik 2
    Astronomik Filters Astronomik CLS Light Pollution Filter 2" - CLS-2
    $159.95
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    free shipping
  • Astronomik 31 mm CLS Light Pollution Filter
    Astronomik Filters Astronomik CLS Light Pollution Filter - 31 mm Round - CLS-31
    $95.95
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    free shipping
  • Astronomik Filters Astronomik CLS-CCD Light Pollution Filter - 1.25" - CLSCCD-1
    $99.95
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    free shipping
  • Astronomik 2
    Astronomik Filters Astronomik CLS-CCD Light Pollution Filter - 2" - CLSCCD-2
    $199.95
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    free shipping
  • Astronomik CLS CCD Canon EOS Clip Filter
    Astronomik Filters Astronomik CLS CCD Canon EOS Clip Filter - CLSCCD-EOS
    $159.95
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  • Astronomik CLS-CCD Canon EOS XL Full Frame Clip Filter
    Astronomik Filters Astronomik CLS CCD Canon EOS XL Full Frame Clip Filter - CLSCCD-EOSXL
    $199.95
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  • Astronomik CLS Canon EOS Clip Filter
    Astronomik Filters Astronomik CLS Canon EOS Clip Filter - CLS-EOS
    $129.95
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  • Astronomik CLS Canon EOS XL Clip Filter
    Astronomik Filters Astronomik CLS Canon EOS XL Full Frame Clip Filter - CLS-EOSXL
    $179.95
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  • Astronomik T-Thread CLS CCD Light Pollution Filter
    Astronomik Filters Astronomik CLS CCD Light Pollution Filter - T-Mount - CLSCCD-T
    $179.95
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    free shipping
  • Celestron RASA Light Pollution Filter
    Celestron Celestron RASA 11 Light Pollution Imaging Filter - 72mm - 93617
    $529.95
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    free shipping
  • Optolong Optolong CLS Filter - 1.25" Mounted - CLS-125
    $55.00
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    free shipping
  • Optolong Optolong CLS Filter - 2" Mounted - CLS-200
    $85.00
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    free shipping
  • Optolong Optolong CLS-CCD Filter -1.25" Mounted - CLSCCD-125
    $96.00
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    free shipping
  • Optolong Optolong CLS-CCD Filter - 2" Mounted - CLSCCD-200
    $159.00
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    free shipping
  • Explore Scientific 1.25
    Explore Scientific Explore Scientific 1.25" CLS Filter - 310225
    $89.99
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  • Explore Scientific Explore Scientific 2" CLS Filter - 310220
    $99.99
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  • Astronomik 36 mm CLS-CCD Light Pollution Filter
    Astronomik Filters Astronomik CLS CCD Light Pollution Filter - 36 mm Round - CLSCCD-36
    $129.95
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    free shipping
  • Astronomik 36 mm CLS Light Pollution Filter
    Astronomik Filters Astronomik CLS Light Pollution Filter - 36 mm Round - CLS-36
    $109.95
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  • Astronomik SCT Rear Cell CLS Light Pollution Filter
    Astronomik Filters Astronomik CLS Light Pollution Filter - SC Rear Cell - CLS-SCT
    $159.95
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    free shipping
  • Astronomik T-Thread CLS Light Pollution Filter
    Astronomik Filters Astronomik CLS Light Pollution Filter - T-Mount - CLS-T
    $139.95
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    free shipping
  • Astronomik Filters Astronomik CLS-CCD Light Pollution Filter - 31 mm Round - CLSCCD-31
    $109.95
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    free shipping
  • Astronomik SCT Rear Cell CLS CCD Light Pollution Filter
    Astronomik Filters Astronomik CLS CCD Light Pollution Filter - SC Rear Cell - CLSCCD-SCT
    $199.95
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  • Astronomik 50 mm Round CLS Light Pollution Filter
    Astronomik Filters Astronomik CLS Light Pollution Filter - 50 mm Round - CLS-50R
    $159.95
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  • Astronomik 50 mm Round CLS CCD Light Pollution Filter
    Astronomik Filters Astronomik CLS CCD Light Pollution Filter - 50 mm Round - CLSCCD-50R
    $199.95
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  • Astronomik CLS Light Pollution Filter - 50x50 mm Square
    Astronomik Filters Astronomik CLS Light Pollution Filter - 50 mm Square - CLS-50SQ
    $189.95
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  • Astronomik 50x50 mm CLS CCD Light Pollution Filter
    Astronomik Filters Astronomik CLS CCD Light Pollution Filter - 50 mm Square - CLSCCD-50SQ
    $249.95
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  • Celestron Light Pollution Imaging Filter for 8
    Celestron Celestron Light Pollution Imaging Filter for 8" RASA - 93614
    $219.95
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  • Astronomik CLS Clip Filter for Canon EOS M Series Cameras
    Astronomik Filters Astronomik CLS Canon EOS M Clip Filter - CLS-EOS-M
    $139.95
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  • Astronomik CLS Sony Alpha 7 Clip Filter
    Astronomik Filters Astronomik CLS Filter - Sony Alpha 7 Clip - CLS-SONY
    $199.95
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  • Astronomik CLS CCD Clip Filter for Canon EOS M Series Cameras
    Astronomik Filters Astronomik CLS CCD Canon EOS M Clip Filter - CLSCCD-EOS-M
    $159.95
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  • Astronomik CLS CCD Sony Alpha 7 Clip Filter
    Astronomik Filters Astronomik CLS CCD Filter - Sony Alpha 7 Clip - CLSCCD-SONY
    $239.95
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  • Astronomik CLS Filter - Canon XT EOS Clip
    Astronomik Filters Astronomik CLS Canon EOS XT Clip Filter - CLS-EOS-XT
    $149.95
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