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  1. Astrodon - Narrowband - 50mm Square OIII 5 nm Filter

    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,

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    FREE SHIPPING
    (48 States)
    Model#: OIII5-50S
    $745.00

  2. Astrodon - Narrowband - 50mm Square RED Continuum 5 nm Filter

    Astrodon - Narrowband - 50mm Square RED Continuum 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 SHIPPING
    (48 States)
    Model#: REDCON5-50S
    $750.00

  3. Astrodon - Narrowband - 50mm Square SII 3 nm Filter

    Astrodon - Narrowband - 50mm Square SII 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 SHIPPING
    (48 States)
    Model#: SII3-50S
    $1,095.00

  4. Astrodon - Narrowband - 50mm Square SII 5 nm Filter

    Astrodon - Narrowband - 50mm Square SII 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 SHIPPING
    (48 States)
    Model#: SII5-50S
    $745.00

  5. Astrodon - Narrowband 5 nm H-a > 90%T 36mm Diameter Filter for SBIG ST-8300

    Astrodon - Narrowband 5 nm H-a > 90%T 36mm Diameter Filter for SBIG ST-8300

    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,

    ...
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    FREE SHIPPING
    (48 States)
    Model#: HA5-36R
    $375.00

  6. Astrodon - Narrowband 5 nm H-a > 90%T 65mm Square Filter for SBIG STX

    Astrodon - Narrowband 5 nm H-a > 90%T 65mm Square Filter for SBIG STX

    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),

    ...
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    FREE SHIPPING
    (48 States)
    Model#: HA5-65S
    $945.00

  7. 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 ST-8300

    Astrodon - Narrowband 5 nm OIII 90%T 36mm Diameter Filter for SBIG ST8300

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    FREE SHIPPING
    (48 States)
    Model#: OIII5-36R
    $375.00

  8. Astrodon - Narrowband 5 nm SII > 90%T 36mm Diameter Filter for SBIG ST-8300

    Astrodon - Narrowband 5 nm SII > 90%T 36mm Diameter Filter for SBIG ST-8300

    Astrodon - Narrowband 5 nm SII 90%T 36mm Diameter Filter for SBIG ST8300

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    FREE SHIPPING
    (48 States)
    Model#: SII5-36R
    $375.00

  9. Astrodon- Narrowband - 1.25" Mounted H-a 5 nm Filter

    Astrodon- Narrowband - 1.25" Mounted H-a 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 SHIPPING
    (48 States)
    Model#: HA5-27R
    $295.00

  10. Astronomik - 12nm H-Beta CCD Filter - 1.25" Round Mounted

    Astronomik - 12nm H-Beta CCD Filter - 1.25" Round Mounted

    The Astronomik H-beta filter is a narrow band emission-line filter for CCD photography.

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    Model#: HBCCD-1
    $149.95

  11. Astronomik - 12nm H-Beta CCD Filter - 2" Round Mounted

    Astronomik - 12nm H-Beta CCD Filter - 2" Round Mounted

    The Astronomik H-beta filter is a narrow band emission-line filter for CCD photography.

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    FREE SHIPPING
    (48 States)
    Model#: HBCCD-2
    $329.95

  12. Astronomik - 12nm H-Beta CCD Filter - 31mm Round Unmounted

    Astronomik - 12nm H-Beta CCD Filter - 31mm Round Unmounted

    The Astronomik H-beta filter is a narrow band emission-line filter for CCD photography.

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    Model#: HBCCD-31
    $179.95

  13. Astronomik - 12nm H-Beta CCD Filter - 36mm Round Unmounted

    Astronomik - 12nm H-Beta CCD Filter - 36mm Round Unmounted

    The Astronomik H-beta filter is a narrow band emission-line filter for CCD photography.

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    FREE SHIPPING
    (48 States)
    Model#: HBCCD-36
    $249.95

  14. Astronomik - 12nm H-Beta CCD Filter - 50mm Round Unmounted

    Astronomik - 12nm H-Beta CCD Filter - 50mm Round Unmounted

    The Astronomik H-beta filter is a narrow band emission-line filter for CCD photography.

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    FREE SHIPPING
    (48 States)
    Model#: HBCCD-50R
    $329.95

  15. Astronomik - 12nm H-Beta CCD Filter - 50mm Square Unmounted

    Astronomik - 12nm H-Beta CCD Filter - 50mm Square Unmounted

    The Astronomik H-beta filter is a narrow band emission-line filter for CCD photography.

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    FREE SHIPPING
    (48 States)
    Model#: HBCCD-50SQ
    $429.95

  16. Astronomik - CLS CCD Light Pollution Filter - 31mm Round Unmounted

    Astronomik - CLS CCD Light Pollution Filter - 31mm Round Unmounted

    The Astronomik CLS CCD is suitable under light-polluted skies for DSLR Cameras, which have been remodeled for astronomical use.

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    Model#: CLSCCD-31
    $129.95

  17. Astronomik - CLS CCD Light Pollution Filter - 36mm Round Unmounted

    Astronomik - CLS CCD Light Pollution Filter - 36mm Round Unmounted

    The Astronomik CLS CCD is suitable under light-polluted skies for DSLR Cameras, which have been remodeled for astronomical use.

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    Model#: CLSCCD-36
    $169.95

  18. Astronomik - CLS Light Pollution Filter - 1.25" Mounted

    Astronomik - CLS Light Pollution Filter - 1.25" Mounted

    The Astronomik CLS is an excellent filter for black & white and color imaging of nebulae, galaxies and star clusters with astronomical instruments of any size.

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    Model#: CLS-1
    $79.95

  19. Astronomik - CLS Light Pollution Filter - 2" Round Mounted

    Astronomik - CLS Light Pollution Filter - 2" Round Mounted

    The Astronomik CLS is an excellent filter for black & white and color imaging of nebulae, galaxies and star clusters with astronomical instruments of any size.

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    Model#: CLS-2
    $189.95

  20. Astronomik - CLS Light Pollution Filter - 31mm Round Unmounted

    Astronomik - CLS Light Pollution Filter - 31mm Round Unmounted

    The Astronomik CLS is an excellent filter for black & white and color imaging of nebulae, galaxies and star clusters with astronomical instruments of any size.

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    Model#: CLS-31
    $99.95

Items 21 to 40 of 150 total

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