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Deep Sky Filters

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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 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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  • Thousand Oaks Optical Thousand Oaks LP-3 Nebula Filter Oxygen III - 1.25" - LP-325
    $89.00 $71.20
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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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  • Lumicon Lumicon Gen 3 OIII Oxygen III Filter - 2" - LF3045
    $200.00
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  • Lumicon 1.25
    Lumicon Lumicon Gen 3 OIII Oxygen III Filter - 1.25" - LF3040
    $100.00
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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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  • 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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  • Explore Scientific 1.25
    Explore Scientific Explore Scientific 1.25" OIII Nebula Filter - 310205
    $89.99 $71.99
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  • Explore Scientific 2
    Explore Scientific Explore Scientific 2" OIII Nebula Filter - 310200
    $119.99
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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 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 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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  • Zhumell 2
    Zhumell Zhumell 2" High Performance O-III Telescope Filter - ZHUL067-1
    $59.99
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  • Tele Vue Tele Vue Bandmate OIII Filter - 1.25" - B2O-0125
    $100.00
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  • Tele Vue Bandmate OIII Filter - 2
    Tele Vue Tele Vue Bandmate OIII Filter - 2" - B2O-0200
    $200.00
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  • Astronomik OIII 12 nm CCD Filter - EOS M Clip
    Astronomik Filters Astronomik OIII 12 nm CCD Clip Filter for Canon EOS M Series Cameras - OIIICCD-EOS-M
    $209.95
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  • Astronomik 12 nm OIII CCD Clip Filter for Sony Alpha 7 Series Cameras
    Astronomik Filters Astronomik OIII 12 nm CCD Sony Alpha 7 Clip Filter - OIIICCD-SONY
    $329.95
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