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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 CLS Pentax K1 Clip Filter
    Astronomik Filters Astronomik CLS Pentax K1 Clip Filter - CLS-PENTAX
    $189.95
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  • Astronomik CLS CCD Pentax K1 Clip Filter
    Astronomik Filters Astronomik CLS CCD Pentax K1 Clip Filter - CLSCCD-PENTAX
    $239.95
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  • Astronomik L-2 UV-IR Blocking Filter - Pentax K1 Clip Format
    Astronomik Filters Astronomik L-2 UV-IR Blocking Filter - Pentax K-1 Clip - L2-PENTAX
    $129.95
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  • Astronomik ProPlanet 642 IR-Pass Pentax K-1 Clip Filter
    Astronomik Filters Astronomik ProPlanet 642 IR Pass Pentax K1 Clip Filter - P642-PENTAX
    $159.95
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  • Astronomik ProPlanet 742 IR-Pass Pentax K-1 Clip Filter
    Astronomik Filters Astronomik ProPlanet 742 IR Pass Pentax K1 Clip Filter - P742-PENTAX
    $119.95
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  • Astronomik ProPlanet 807 IR-Pass Pentax K-1 Clip Filter
    Astronomik Filters Astronomik ProPlanet 807 IR Pass Pentax K1 Clip Filter - P807-PENTAX
    $119.95
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  • Astronomik OWB Pentax K1 CCD Clip Filter - Type 3
    Astronomik Filters Astronomik OWB Filter - Type 3 - Pentax K1 Clip - OWBCCD-PENTAX
    $199.95
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  • Astronomik H-Alpha 12 nm CCD Filter - Pentax K-1 Clip
    Astronomik Filters Astronomik H-Alpha 12 nm Pentax K1 Clip Filter - HA12-PENTAX
    $329.95
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