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  1. Astrodon - Narrowband - 36mm Unmounted SII 5 nm Filter

    Astrodon - Narrowband - 36mm Unmounted SII 5 nm Filter

    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, 501 nm), sulfur (SII, 672nm) and others.

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    (48 States)
    Model#: SII5-36R
    $435.00

  2. Astrodon Gen2 E-Series LRGB (set of 4) Mounted in 31mm Inserts

    Astrodon - Gen2 E-Series LRGB (set of 4) Mounted in 31mm Inserts

    Astrodon Tru-Balance RGB filters have revolutionized CCD imaging. Their popularity is due to ease-of-use, high optical throughput and great resulting color for galaxies, star clusters and nebulae.  There are two varieties of Tru-Balance filters - E-Series and I-Series.

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    (48 States)
    Model#: LRGB2-E31R
    $525.00

  3. Astrodon 36mm Unmounted Gen2 E-Series LRGB (set of 4)

    Astrodon - 36mm Unmounted Gen2 E-Series LRGB Filters (set of 4)

    Astrodon Tru-Balance RGB filters have revolutionized CCD imaging. Their popularity is due to ease-of-use, high optical throughput and great resulting color for galaxies, star clusters and nebulae.  There are two varieties of Tru-Balance filters - E-Series and I-Series.

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    (48 States)
    Model#: LRGB2-E36R
    $675.00

  4. SBIG - Filter Wheel for 8300 for 36mm filters with ASTRODON - 36mm LRGB Filters

    SBIG - Filter Wheel for 8300 for 36mm filters with ASTRODON - 36mm LRGB Filters

    It is a single carousel design with a new filter retaining system that makes changing filters easier than with individual retaining screws for each filter.

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    (48 States)
    Model#: FW5-8300_ASTRODON_36MM_LRGB_SET_B
    $1,195.00

  5. Astrodon 1.25" ExoPlanet-BB Filter

    Astrodon - 1.25" Mounted ExoPlanet-BB Filter

    Astrodon introduces the ExoPlanet-BB filter for use in amateur-scale telescopes to measure light curves of exoplanets.

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    Model#: XOPBB-27R
    $185.00

  6. Astronomik - LRGB Filter Set - 1.25" Round Mounted

    Astronomik - LRGB Filter Set - 1.25" Round Mounted

    These filters provide a natural color reproduction of planets, stars, emission- and reflection nebulas.

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    (48 States)
    Model#: LRGB-1
    $329.95

  7. Astronomik - CLS Light Pollution Filter - Canon EOS Clip

    Astronomik - CLS Light Pollution Filter - Canon EOS Clip

    The Astronomik CLS is our inexpensive sollution for the visual deep-sky observation, b&w photography and CCD observation

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    Model#: CLS-EOS
    $139.95

  8. Astronomik - Planet IR Pro 742 Filter - 1.25" Round Mounted

    Astronomik - Planet IR Pro 742 Filter - 1.25" Round Mounted

    The Astronomik ProPlanet 742 is the ideal filters for the reception of the moon and planets, notably Mars, with telescopes from 6" (150mm) aperture.

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    Model#: P742-1
    $49.95

  9. 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

    Regular Price: $189.95

    Special Price: $169.95

  10. 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

  11. Astronomik - H-Alpha 12nm CCD Filter - Canon EOS Clip

    Astronomik - H-Alpha 12nm CCD Filter - Canon EOS Clip

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

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    (48 States)
    Model#: HA12-EOS
    $219.95

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

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

    The Astronomik H-alpha filter is a narrow band filter for CCD photography. The filter lets the H-alpha light of emission nebulae pass and blocks nearly the whole remainder of the spectrum where the CCD is sensitive.

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    Model#: HA12-1
    $149.95

  13. Astronomik - H-Alpha 12nm CCD Filter - 2" Round Mounted

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

    The Astronomik H-alpha filter is a narrow band filter for CCD photography. The filter lets the H-alpha light of emission nebulae pass and blocks nearly the whole remainder of the spectrum where the CCD is sensitive.

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    (48 States)
    Model#: HA12-2
    $329.95

  14. Astronomik - H-Alpha 6nm CCD Filter - 50mm Round Unmounted

    Astronomik - H-Alpha 6nm CCD Filter - 50mm Round Unmounted

    The Astronomik 6nm H-alpha filter is an extremely narrow emission-line filter for CCD photography.

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    (48 States)
    Model#: HA6-50R
    $499.95

  15. Astronomik - H-Alpha 6nm CCD Filter - 1.25" Round Mounted

    Astronomik - H-Alpha 6nm CCD Filter - 1.25" Round Mounted

    The Astronomik 6nm H-alpha filter is an extremely narrow emission-line filter for CCD photography.

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    (48 States)
    Model#: HA6-1
    $239.95

  16. Astronomik - H-Alpha CCD Filter 6nm - 2" Mounted

    Astronomik - H-Alpha CCD Filter 6nm - 2" Mounted

    The Astronomik 6nm H-alpha filter is an extremely narrow emission-line filter for CCD photography.

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    (48 States)
    Model#: HA6-2
    $529.95

  17. 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.

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    (48 States)
    Model#: HA12-50R
    $329.95

  18. Astronomik - H-Alpha 12nm CCD Filter - T Threads

    Astronomik - H-Alpha 12nm CCD Filter - T Threads

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

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    (48 States)
    Model#: HA12-T
    $239.95

  19. Astronomik - H-Alpha 6nm CCD Filter - 50mm Square Unmounted

    Astronomik - H-Alpha 6nm CCD Filter - 50mm Square Unmounted

    The Astronomik 6nm H-alpha filter is an extremely narrow emission-line filter for CCD photography.

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    (48 States)
    Model#: HA6-50SQ
    $649.95

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

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

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

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    (48 States)
    Model#: HA12-50SQ
    $429.95

Items 61 to 80 of 1015 total

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