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  1. 1.25" Filters (8)
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  1. Astrodon (28)
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  1. 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

  2. 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

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

  3. 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

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

  4. 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),

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

  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,

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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

Items 1 to 20 of 28 total

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Page:
  1. 1

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