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50mm Filters

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  1. Astrodon - Narrowband - 50mm dia. H-a 3 nm Filter

    Astrodon - Narrowband - 50mm dia. H-a 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 SHIPPING
    (48 States)
    Model#: HA3-50R
    $925.00

  2. Astrodon - Narrowband - 50mm dia. H-a 5 nm Filter

    Astrodon - Narrowband - 50mm dia. H-a 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#: HA5-50R
    $625.00

  3. Astrodon - Narrowband - 50mm dia. OIII 3 nm Filter

    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 SHIPPING
    (48 States)
    Model#: OIII3-50R
    $925.00

  4. Astrodon - Narrowband - 50mm dia. OIII 5 nm Filter

    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 SHIPPING
    (48 States)
    Model#: OIII5-50R
    $625.00

  5. Astrodon - Narrowband - 50mm dia. RED 5 nm Filter

    Astrodon - Narrowband - 50mm dia. RED 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#: REDCON5-50R
    $675.00

  6. Astrodon - Narrowband - 50mm dia. SII 3 nm Filter

    Astrodon - Narrowband - 50mm dia. SII 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 SHIPPING
    (48 States)
    Model#: SII3-50R
    $925.00

  7. Astrodon - Narrowband - 50mm dia. SII 5 nm Filter

    Astrodon - Narrowband - 50mm dia. 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#: SII5-50R
    $625.00

  8. Astrodon - Narrowband - 50mm dia. Unmounted NII 3 nm Filter

    Astrodon - Narrowband - 50mm dia. Unmounted NII 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 SHIPPING
    (48 States)
    Model#: NII3-50R
    $925.00

  9. Astrodon - Narrowband - 50mm Square H-a 3 nm Filter

    Astrodon - Narrowband - 50mm Square H-a 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 SHIPPING
    (48 States)
    Model#: HA3-50S
    $1,095.00

  10. Astrodon - Narrowband - 50mm Square H-a 5 nm Filter

    Astrodon - Narrowband - 50mm Square H-a 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#: HA5-50S
    $745.00

  11. Astrodon - Narrowband - 50mm Square OIII 3 nm Filter

    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 SHIPPING
    (48 States)
    Model#: OIII3-50S
    $1,095.00

  12. 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,

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

  13. 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

  14. 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

  15. 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

  16. 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.

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

  17. 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.

    ... Learn More

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

  18. Astronomik - CLS Light Pollution Filter - 50mm Square Unmounted

    Astronomik - CLS Light Pollution Filter - 50mm Square Unmounted

    Astronomik CLS Filter- 50mm Square UnmountedThe Astronomik CLS is our inexpensive sollution for the visual deep-sky observation, b&w photography and CCD observation

    ...     Learn More
    FREE SHIPPING
    (48 States)
    Model#: CLS-50SQ
    $249.95

  19. Astronomik - CLS Visual Light Pollution Filter - 50mm Round Unmounted

    Astronomik - CLS Visual Light Pollution Filter - 50mm Round Unmounted

    The Astronomik Visual CLS is a light pollution filter for black & white and color imaging of nebulae, galaxies and star clusters.

    ...     Learn More
    Model#: CLS-50R
    $189.95

  20. Astronomik - H-Alpha 12nm CCD Filter - 50mm Round Unmounted

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

    The Astronomik H-alpha filter is a narrow band filter for CCD photography.

    ...     Learn More
    FREE SHIPPING
    (48 States)
    Model#: HA12-50R
    $329.95

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