OIII (Oxygen) CCD Filters
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Astrodon - Narrowband - 1.25" Mounted OIII 3 nm Filter
Narrowband FiltersNarrowband (NB) filters enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII, 501 nm), sulfur (SII, 672nm) and others ... Learn More
FREE SHIPPINGModel#: OIII3-27R(48 States)
$425.00 -
Astrodon - Narrowband - 1.25" Mounted OIII 5 nm Filter
Narrowband FiltersNarrowband (NB) filters enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII, 501 nm), sulfur (SII, 672nm) and others ... Learn More
FREE SHIPPINGModel#: OIII5-27R(48 States)
$295.00 -
Astrodon - Narrowband - 50mm dia. OIII 3 nm Filter
Narrowband Filters Narrowband (NB) filters enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII, ... Learn More
FREE SHIPPINGModel#: OIII3-50R(48 States)
$925.00 -
Astrodon - Narrowband - 50mm dia. OIII 5 nm Filter
Narrowband Filters Narrowband (NB) filters enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII, ... Learn More
FREE SHIPPINGModel#: OIII5-50R(48 States)
$625.00 -
Astrodon - Narrowband - 50mm Square OIII 3 nm Filter
Narrowband Filters Narrowband (NB) filters enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII, ... Learn More
FREE SHIPPINGModel#: OIII3-50S(48 States)
$1,095.00 -
Astrodon - Narrowband - 50mm Square OIII 5 nm Filter
Narrowband Filters Narrowband (NB) filters enhance contrast of emission objects by accepting only a narrow range of wavelengths around the emission lines of hydrogen (H-a, 656 nm), oxygen (OIII,
... Learn MoreFREE SHIPPINGModel#: OIII5-50S(48 States)
$745.00 -
Astrodon - Narrowband 5 nm OIII > 90%T 36mm Diameter Filter for SBIG ST-8300
Astrodon - Narrowband 5 nm OIII 90%T 36mm Diameter Filter for SBIG ST8300
... Learn MoreFREE SHIPPINGModel#: OIII5-36R(48 States)
$375.00 -
Astronomik - OIII 12nm CCD Filter - 1.25" Round Mounted
The Astronomik OIII CCD filter is a narrow band emission-line-filter for CCD photography.
... Learn MoreModel#: OIIICCD-1
$149.95 -
Astronomik - OIII 12nm CCD Filter - 2" Round Mounted
The Astronomik OIII CCD filter is a narrow band emission-line-filter for CCD photography.
... Learn MoreFREE SHIPPINGModel#: OIIICCD-2(48 States)
$329.95 -
Astronomik - OIII 12nm CCD Filter - 31mm Round Unmounted
The Astronomik OIII CCD filter is a narrow band emission-line-filter for CCD photography.
... Learn MoreModel#: OIIICCD-31
$179.95 -
Astronomik - OIII 12nm CCD Filter - 36mm Round Unmounted
The Astronomik OIII CCD filter is a narrow band emission-line-filter for CCD photography.
... Learn MoreFREE SHIPPINGModel#: OIIICCD-36(48 States)
$224.95 -
Astronomik - OIII 12nm CCD Filter - 50mm Square Unmounted
The Astronomik OIII CCD filter is a narrow band emission-line-filter for CCD photography.
... Learn MoreFREE SHIPPINGModel#: OIIICCD-50SQ(48 States)
$429.95 -
Astronomik - OIII 12nm CCD Filter - Canon EOS Clip
The Astronomik OIII CCD filter is a narrow band emission-line-filter for CCD photography.
... Learn MoreFREE SHIPPINGModel#: OIIICCD-EOS(48 States)
$219.95 -
Astronomik - OIII 12nm CCD Filter - T-Threads
The Astronomik OIII CCD filter is a narrow band emission-line-filter for CCD photography.
... Learn MoreFREE SHIPPINGModel#: OIIICCD-T(48 States)
$239.95 -
Astronomik - OIII CCD Filter - 50mm Round Unmounted
The Astronomik OIII CCD filter is a narrow band emission-line-filter for CCD photography.
... Learn MoreFREE SHIPPINGModel#: OIIICCD-50R(48 States)
$329.95 -
Baader Planetarium- Baader 36mm Narrowband Filter Set - Ha, OIII, SII
Baader Planetarium- Baader 36mm Narrowband Filter Set - Ha, OIII, SII ... Learn More
FREE SHIPPINGModel#: BA-36NBSET(48 States)
$495.00 -
FLI - Research Grade 50mm Diameter OIII
RG 50D O IIIFLI Research Grade filter sets are par focal to F4.5Size: 50 mm +0.2 / -0.5mmShape: roundThickness: 5mm +/-0 ... Learn More
FREE SHIPPINGModel#: RG 50D OIII(48 States)
$495.00 -
Opticstar - 1.25 " Nebula Deep Sky Filter
This Opticstar 1.25" eyepiece is suitable for both visual observation and imaging these are all-in-one high-transmission deep sky filters.
... Learn MoreModel#: OSRIFNEB1
$60.00 -
Opticstar - 2" Nebula Deep Sky Filter
This Opticstar 2" eyepiece is suitable for both visual observation and imaging these are all-in-one high-transmission deep sky filters.
... Learn MoreModel#: OSRIFNEB2
$105.00 -
Orion - 2" Extra-Narrowband Oxygen III Filter
If you're using a monochrome CCD camera like Orion's Parsec 8300M, these specialized "line" filters are the perfect complement. Orion's 2" Oxygen-III Filter has a full-width half maximum (FWHM) bandpass of just 7nm, ensuring high-contrast images, even in heavily light-polluted or brightly moonlit skies. The filter can be used separately or in combination with a filter wheel for advanced tri-color imaging of emission nebulae.
... Learn MoreModel#: 05545
$359.95
