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  • Astronomik 50 mm Round LRGB Filter Set
    Astronomik Filters Astronomik LRGB Filter Set - 50 mm Round - LRGB-50R
    $569.95
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  • Astronomik OIII 12 nm CCD Filter - 50 mm Round
    Astronomik Filters Astronomik OIII 12 nm CCD Filter - 50 mm Round - OIIICCD-50R
    $299.95
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  • Astronomik 50 mm Round 6 nm OIII CCD Filter
    Astronomik Filters Astronomik OIII 6 nm CCD Filter - 50 mm Round - OIIICCD6-50R
    $469.95
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  • Astronomik 50 mm Round SII 12 nm CCD Filter
    Astronomik Filters Astronomik SII 12 nm CCD Filter - 50 mm Round - SII-50R
    $299.95
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  • Astronomik 50 mm Round SII 6 nm CCD Filter
    Astronomik Filters Astronomik SII 6 nm CCD Filter - 50 mm Round - SII6-50R
    $469.95
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  • Astronomik 50 mm Round MC Clear Glass Filter
    Astronomik Filters Astronomik MC Clear Glass Filter - 50 mm Round - C-50R
    $59.95
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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 50 mm Deep Sky RGB Color Filters - Round
    Astronomik Filters Astronomik Deep Sky RGB Color Filter Set - 50 mm Round - DRGB-50R
    $579.95
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  • Astronomik 50 mm Round H-Alpha 6 nm CCD Filter
    Astronomik Filters Astronomik H-Alpha 6 nm CCD Filter - 50 mm Round - HA6-50R
    $469.95
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  • Astronomik L-1 UV-IR Blocking Luminance Filter - 50 mm Round
    Astronomik Filters Astronomik L-1 UV-IR Blocking Filter - 50 mm Round - L1-50R
    $129.95
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  • Astronomik L-2 UV-IR Blocker - 50 mm Round Filter
    Astronomik Filters Astronomik L-2 UV-IR Blocking Filter - 50 mm Round - L2-50R
    $109.95
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  • Astronomik 50 mm Round L-3 UV-IR Blocking Filter
    Astronomik Filters Astronomik L-3 UV-IR Blocking Filter - 50 mm Round - L3-50R
    $129.95
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  • Astronomik 50x50 mm MC Clear Glass Filter
    Astronomik Filters Astronomik MC Clear Glass Filter - 50 mm Square - C-50SQ
    $89.95
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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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  • Astronomik 50 mm Square H-Alpha 12 nm CCD Filter
    Astronomik Filters Astronomik H-Alpha 12 nm CCD Filter - 50 mm Square - HA12-50SQ
    $329.95
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  • Astronomik H-Alpha 6 nm CCD Filter - 50x50 mm
    Astronomik Filters Astronomik H-Alpha 6 nm CCD Filter - 50 mm Square - HA6-50SQ
    $499.95
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  • Astronomik L-1 Luminance UV-IR Blocking Filter - 50 mm Square
    Astronomik Filters Astronomik L-1 UV-IR Blocking Filter - 50 mm Square - L1-50SQ
    $179.95
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  • Astronomik UV-IR Blocking L-2 Luminance Filter - 50x50 mm
    Astronomik Filters Astronomik L-2 UV-IR Blocking Filter - 50 mm Square - L2-50SQ
    $149.95
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  • Astronomik L-3 Luminance UV-IR Blocking Filter - 50x50 mm
    Astronomik Filters Astronomik L-3 UV-IR Blocking Filter - 50 mm Square - L3-50SQ
    $179.95
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  • Astronomik 50 mm x 50 mm OIII 12 nm CCD Filter
    Astronomik Filters Astronomik OIII 12 nm CCD Filter - 50 mm Square - OIIICCD-50SQ
    $329.95
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  • Astronomik 50 mm Square OIII 6 nm CCD Filter
    Astronomik Filters Astronomik OIII 6 nm CCD Filter - 50 mm Square - OIIICCD6-50SQ
    $499.95
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  • Astronomik 50 mm ProPlanet 642 IR-Pass Filter - Round
    Astronomik Filters Astronomik ProPlanet 642 IR Pass Filter - 50 mm Round - P642-50R
    $129.95
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  • Astronomik 50x50 mm ProPlanet 642 IR-Pass Filter
    Astronomik Filters Astronomik ProPlanet 642 IR Pass Filter - 50 mm Square - P642-50SQ
    $159.95
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  • Astronomik 50 mm x 50 mm SII 12 nm CCD Filter
    Astronomik Filters Astronomik SII 12 nm CCD Filter - 50 mm Square - SII-50SQ
    $329.95
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  • Astronomik SII 6 nm CCD 50 mm Square Filter
    Astronomik Filters Astronomik SII 6 nm CCD Filter - 50 mm Square - SII6-50SQ
    $499.95
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  • Astronomik 50 mm Square Deep Sky RGB Color Filter Set
    Astronomik Filters Astronomik Deep Sky RGB Color Filter Set - 50 mm Square - DRGB-50SQ
    $699.95
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  • Astronomik Luminance Filter Type 2C - 50 mm Round Mounted
    Astronomik Filters Astronomik Luminance Filter Type 2C - 50 mm Round Mounted - L-50R
    $99.95 $84.95
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  • Astronomik UHC-E 50 mm Round Filter
    Astronomik Filters Astronomik UHC-E Filter - 50 mm Round - UHCE-50R
    $129.95
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  • Astronomik 50 mm x 50 mm UHC-E Filter
    Astronomik Filters Astronomik UHC-E Filter - 50 mm Square - UHCE-50SQ
    $159.95
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  • Astronomik 50 mm Round Color Filter - Red
    Astronomik Filters Astronomik Red Type 2c Filter - 50 mm Round - R-50R
    $159.95
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  • Astronomik 50 mm Round Color Filter - Green
    Astronomik Filters Astronomik Green Type 2c Filter - 50 mm Round - G-50R
    $159.95
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  • Astronomik 50 mm Round Color Filter - Blue
    Astronomik Filters Astronomik Blue Type 2c Filter - 50 mm Round - B-50R
    $159.95
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  • Astronomik 50 mm Round ProPlanet 742 IR-Pass Filter
    Astronomik Filters Astronomik ProPlanet 742 IR-Pass Filter - 50 mm Round - P742-50R
    $99.95
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  • Astronomik 50x50 mm ProPlanet 742 IR-Pass Filter
    Astronomik Filters Astronomik ProPlanet 742 IR-Pass Filter - 50 mm Square - P742-50SQ
    $109.95
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  • Astronomik 50 mm Round ProPlanet 807 IR-Pass Filter
    Astronomik Filters Astronomik ProPlanet 807 IR Pass Filter - 50 mm Round - P807-50R
    $99.95
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  • Astronomik 50 mm x 50 mm ProPlanet 807 IR-Pass Filter
    Astronomik Filters Astronomik ProPlanet 807 IR Pass Filter - 50 mm Square - P807-50SQ
    $109.95
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  • Astronomik 50 mm Round H-Alpha 12 nm CCD Filter
    Astronomik Filters Astronomik H-Alpha 12 nm CCD Filter - 50 mm Round - HA12-50R
    $299.95
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One of the most crucial accessories of astro-imaging is filters. Eyepiece filters are an invaluable aid in lunar and planetary observing. They reduce glare and light scattering, increase contrast through selective filtration, increase definition and resolution, reduce irradiation and lessen eye fatigue. Different filters will act differently, highlighting a rainbow of wavelengths to enhance a variety of features in the night sky.


Deep-space imaging in particular benefits from filters. Far away celestial objects, such as nebulae come to life in your photos with vivid colors. We recommend starting out with an h-alpha filter to filter out broadband light pollution while only allowing a very narrow bandwidth of light to pass through. These are a favorite filter among astrophotographers!


We offer deep sky filters and planetary filters from Lumicon, Baader Planetarium, Celestron, TeleVue, Meade, Orion, High Point & Thousand Oaks. Telescope filters will add to the performance of virtually any telescope and are a highly recommended telescope accessory. Feel free to contact one of our telescope experts for advice on selecting the filter assortment that is right for you.

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