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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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  • Astronomik 42 mm Round CLS CCD Light Pollution Reduction Filter
    Astronomik Filters Astronomik CLS CCD Light Pollution Filter - 42 mm Round - CLSCCD-42
    $159.95
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  • Astronomik 42 mm Round L-1 UV-IR Blocking Filter
    Astronomik Filters Astronomik L-1 UV-IR Blocking Filter - 42 mm Round - L1-42
    $99.95
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  • Astronomik L-2 UV-IR Blocking Filter - 42 mm Round
    Astronomik Filters Astronomik L-2 UV-IR Blocking Filter - 42 mm Round - L2-42
    $85.95
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  • Astronomik 42 mm Round L-3 UV-IR Blocking Filter
    Astronomik Filters Astronomik L-3 UV-IR Blocking Filter - 42 mm Round - L3-42
    $99.95
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  • Astronomik 42 mm Round OIII 12 nm CCD Filter
    Astronomik Filters Astronomik OIII 12 nm CCD Filter - 42 mm Round - OIIICCD-42
    $229.95
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  • Astronomik 42 mm Round OIII 6 nm CCD Filter
    Astronomik Filters Astronomik OIII 6 nm CCD Filter - 42 mm Round - OIIICCD6-42
    $359.95
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  • Astronomik 42 mm Round H-Alpha 12 nm CCD Filter
    Astronomik Filters Astronomik H-Alpha 12 nm CCD Filter - 42 mm Round - HA12-42
    $229.95
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  • Astronomik 42 mm Round H-Alpha 6 nm CCD Filter
    Astronomik Filters Astronomik H-Alpha 6 nm CCD Filter - 42 mm Round - HA6-42
    $359.95
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  • Astronomik 42 mm Round 12 nm SII CCD Filter
    Astronomik Filters Astronomik SII 12 nm CCD Filter - 42 mm Round - SII-42
    $229.95
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  • Astronomik 42 mm Round SII 6 nm CCD Filter
    Astronomik Filters Astronomik SII 6 nm CCD Filter - 42 mm Round - SII6-42
    $359.95
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  • Astronomik 42 mm Round ProPlanet 642 IR-Pass Filter
    Astronomik Filters Astronomik ProPlanet 642 IR Pass Filter - 42 mm Round - P642-42
    $109.95
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  • Astronomik 42 mm Round ProPlanet 742 IR-Pass Filter
    Astronomik Filters Astronomik ProPlanet 742 IR-Pass Filter - 42 mm Round - P742-42
    $75.95
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  • Astronomik 42 mm Round ProPlanet 807 IR-Pass Filter
    Astronomik Filters Astronomik ProPlanet 807 IR Pass Filter - 42 mm Round - P807-42
    $75.95
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  • Astronomik 42 mm Round MC Clear Glass Filter
    Astronomik Filters Astronomik MC Clear Glass Filter - 42 mm Round - C-42
    $59.95
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