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  • Baader Planetarium OIII 8.5 nm Narrowband Filter - 1.25
    Baader Planetarium Baader Planetarium OIII 8.5 nm Narrowband CCD Filter - 1.25" Mounted - FOIIIN-1
    $149.00
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  • Baader Planetarium 2
    Baader Planetarium Baader OIII 8.5 nm Narrowband CCD Filter - 2" Mounted - FOIIIN-2
    $227.00
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  • Orion Orion X-tra Narrowband Oxygen Three O-III 1.25" Filter - 5578
    $129.99
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  • Optolong Optolong OIII 25nm Filter - 1.25" Mounted - OIII-125
    $78.00
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  • Optolong Optolong 25nm OIII Filter - 2" Mounted - OIII-200
    $108.00
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  • Optolong Optolong OIII CCD 6.5nm Filter - 1.25" Mounted - OIIICCD65-125
    $159.00
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  • Optolong Optolong OIII CCD 6.5nm Filter - 2" Mounted - OIIICCD65-200
    $255.00
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  • Optolong Optolong OIII CCD 6.5nm Filter - 31mm Unmounted - OIIICCD65-31U
    $189.00
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  • Optolong Optolong OIII CCD 6.5nm Filter - 36mm Unmounted - OIIICCD65-36U
    $195.00
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  • 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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  • Astronomik OIII 12 nm CCD Filter - 1.25
    Astronomik Filters Astronomik OIII 12 nm CCD Filter - 1.25" Round Mounted - OIIICCD-1
    $129.95
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  • Astronomik 12 nm OIII CCD Filter - EOS Clip
    Astronomik Filters Astronomik OIII 12 nm CCD Filter - EOS Clip - OIIICCD-EOS
    $189.95
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  • Baader OIII 8.5 nm Filter - 36 mm Unmounted
    Baader Planetarium Baader OIII 8.5 nm Narrowband CCD Filter - 36 mm Unmounted - FOIIIN-RD36
    $182.00
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  • Baader OIII 8.5 nm Filter - 50 mm Round Unmounted
    Baader Planetarium Baader OIII 8.5 nm Narrowband CCD Filter - 50.4 mm Round Unmounted - FOIIIN-RD50
    $292.00
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  • Baader OIII 8.5 nm Filter - 50 mm Square Unmounted
    Baader Planetarium Baader OIII 8.5 nm Narrowband CCD Filter - 50 mm Square Unmounted - FOIIIN-SQ50
    $374.00
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  • Baader OIII 8.5 nm Filter - 65 mm Square Unmounted
    Baader Planetarium Baader OIII 8.5 nm Narrowband CCD Filter - 65 mm Square Unmounted - FOIIIN-SQ65
    $492.00
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  • Baader OIII High Speed f/2 CCD Filter
    Baader Planetarium Baader f/2 High Speed OIII CCD Filter - 1.25" Mounted - FOIIIHS-1
    $213.00
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  • 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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  • Explore Scientific 1.25
    Explore Scientific Explore Scientific 1.25" OIII Nebula Filter - 310205
    $89.99
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  • Explore Scientific 2
    Explore Scientific Explore Scientific 2" OIII Nebula Filter - 310200
    $119.99
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  • ZWO Astronomy Cameras ZWO OIII 7nm Filter - 1.25" - OIII125
    $129.00
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  • ZWO Astronomy Cameras ZWO OIII 7nm Filter - 31mm - OIII31
    $149.00
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  • ZWO Astronomy Cameras ZWO OIII 7nm Filter - 36mm - OIII36
    $169.00
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  • Astronomik OIII 12 nm CCD Filter - 31 mm Round
    Astronomik Filters Astronomik OIII 12 nm CCD Filter - 31 mm Round - OIIICCD-31
    $169.95
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  • Astronomik 12 nm O-III CCD Filter - 36 mm Round
    Astronomik Filters Astronomik OIII 12 nm CCD Filter - 36 mm Round - OIIICCD-36
    $189.95
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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 6 nm OIIICCD Filter - 1.25
    Astronomik Filters Astronomik OIII 6 nm CCD Filter - 1.25" Round Mounted - OIIICCD6-1
    $199.95
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  • Astronomik 2
    Astronomik Filters Astronomik OIII 6 nm CCD Filter - 2" Round Mounted - OIIICCD6-2
    $469.95
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  • Astronomik OIII 6 nm CCD Filter - 31 mm Round
    Astronomik Filters Astronomik OIII 6 nm CCD Filter - 31 mm Round - OIIICCD6-31
    $249.95
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  • Astronomik 36 mm Round OIII 6 nm CCD Filter
    Astronomik Filters Astronomik OIII 6 nm CCD Filter - 36 mm Round - OIIICCD6-36
    $289.95
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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 6 nm OIII CCD T-Mount Filter
    Astronomik Filters Astronomik OIII 6 nm CCD Filter - T-Mount - OIIICCD6-T
    $419.95
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  • Astronomik OIII 12 nm CCD T-Mount Filter
    Astronomik Filters Astronomik OIII 12 nm CCD Filter - T-Mount - OIIICCD-T
    $269.95
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  • Astronomik OIII SCT Rear Cell Visual Filter
    Astronomik Filters Astronomik OIII Visual Filter - SC Rear Cell - OIII-SCT
    $199.95
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  • Astronomik OIII 12 nm CCD EOS XL Full Frame Clip Filter
    Astronomik Filters Astronomik OIII 12 nm CCD Filter - EOS XL Full Frame Clip - OIIICCD-EOSXL
    $319.95
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  • Astronomik OIII 6 nm CCD EOS XL Full Frame Clip Filter
    Astronomik Filters Astronomik OIII 6 nm CCD Filter - EOS XL Full Frame Clip - OIIICCD6-EOSXL
    $489.95
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  • Astronomik OIII 6 nm CCD Filter - Canon EOS APS-C Clip
    Astronomik Filters Astronomik OIII 6 nm CCD EOS Clip Filter - OIIICCD6-EOS
    $289.95
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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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  • Zhumell 1.25
    Zhumell Zhumell 1.25" High Performance O-III Telescope Filter - ZHUL062-1
    $49.99
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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.

High Point Scientific is rated 4.9/5 based on 1347 reviews

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