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  • Lumicon Lumicon Gen 3 OIII Oxygen III Filter - 2" - LF3045
    $200.00
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  • Thousand Oaks Optical Thousand Oaks LP-3 Oxygen III Nebula Filter - 2" - LP-348
    $179.00
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  • Baader Planetarium 1.25
    Baader Planetarium Baader Visual OIII Nebula Filter - 1.25" - FOIII-1
    $109.00
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  • Baader Planetarium 2
    Baader Planetarium Baader Visual OIII Nebula Filter - 2" - FOIII-2
    $189.00
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  • Celestron OIII Narrowband Filter - 1.25
    Celestron Celestron Oxygen III (OIII) Narrowband 1.25" Filter - 93623
    $89.95 $75.95
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  • Celestron Celestron Oxygen III (OIII) Narrowband 2" Filter - 93624
    $119.95 $99.95
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  • Lumicon 1.25
    Lumicon Lumicon Gen 3 OIII Oxygen III Filter - 1.25" - LF3040
    $100.00
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  • Lumicon Lumicon Oxygen III (OIII) Thread-on Filter for Schmidt-Cassegrain Rear Cell - LF3050
    $200.00
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  • Orion Orion Oxygen III Nebula 1.25" Filter - 05581
    $99.99
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  • Orion Orion Oxygen III Nebula 2" Filter - 05582
    $129.99
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  • Orion Orion X-tra Narrowband Oxygen Three O-III 1.25" Filter - 5578
    $129.99
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  • Thousand Oaks Optical Thousand Oaks LP-3 Nebula Filter Oxygen III - 1.25" - LP-325
    $89.00
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  • Astronomik 1.25
    Astronomik Filters Astronomik OIII Visual Filter - 1.25" Round Mounted - OIII-1
    $109.95
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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 2
    Astronomik Filters Astronomik OIII Visual Filter - 2" Round Mounted - OIII-2
    $219.95
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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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  • 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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  • 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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Your new telescope finally arrived- you opened the box and assembled the scope as carefully as you can. Once darkness falls, the first thing you do is point it up at the Moon and look into the eyepiece. Wow. But if you can imagine, the Moon actually can appear better than that when properly filtered. Telescopes have the ability to attach filters for many different purposes - some of the most common filters are for looking at the Moon, Planets, and Sun.


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.


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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