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  1. Orion - 2" Extra-Narrowband Sulfur-II Filter

    Orion - 2" Extra-Narrowband Sulfur-II Filter

    Effectively blacken the background sky with extra-narrowband filters to produce striking, high-contrast astrophotography of emission nebulae. Orion's 2" Extra-Narrowband Sulfur-II Imaging Filter will do just that. It is ideal for use with monochrome CCD cameras like Orion's Parsec 8300M.

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    Model#: 05546
    $359.95

  2. Astrodon - Photometric Sloan - 1.25" Mounted Gen2 i' Edge Blackened Filter

    Astrodon - Photometric Sloan - 1.25" Mounted Gen2 i' Edge Blackened Filter

    NEW!  Astrodon introduces Generation 2 Sloan filters based upon ongoing input from research organizations.  The changes include

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    Model#: i'2-27R
    $200.00

  3. Levenhuk - 2" Ra UHC Filter

    Levenhuk - 2" Ra UHC Filter

    Levenhuk Ra UHC 2'' filter is a great accessory for deep-sky observations under urban illumination conditions. This filter has a 0.92 transmittance

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    Model#: 35437
    $98.95

  4. Astronomik LRGB Filter Set 31mm Round Unmounted

    Astronomik - LRGB Filter Set - 31mm Round Unmounted

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

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    (48 States)
    Model#: LRGB-31
    $349.95

  5. Astronomik - Luminance Filter - 36mm Round Unmounted

    Astronomik - Luminance Filter - 36mm Round Unmounted

    The Astronomik UV and IR cut Filter is great for for digital photography!

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    Model#: L-36
    $74.95

  6. Astronomik - Luminance Filter - 31mm Round Unmounted

    Astronomik - Luminance Filter - 31mm Round Unmounted

    The Astronomik UV and IR cut Filter is great for for digital photography!

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    Model#: L-31
    $64.95

  7. 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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    (48 States)
    Model#: HBCCD-36
    $249.95

  8. 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

  9. Astronomik - H-Alpha 6nm CCD Filter - 36mm Round Unmounted

    Astronomik - H-Alpha 6nm CCD Filter - 36mm 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#: HA6-36
    $349.95

  10. Astronomik - H-Alpha 6nm CCD Filter - 31mm Round Unmounted

    Astronomik - H-Alpha 6nm CCD Filter - 31mm 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#: HA6-31
    $289.95

  11. Astronomik - H-Alpha 12nm CCD Filter - 36mm Round Unmounted

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

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

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    (48 States)
    Model#: HA12-36
    $229.95

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

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

    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#: HA12-31
    $179.95

  13. Astronomik - Dark Filter - 2"

    Astronomik - Dark Filter - 2"

    Do you have a CCD camera without a mechanical shutter and would like to do dark frames without continually monitoring your equipment?

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    Model#: DARK-2
    $49.95

  14.  Astronomik - Dark Filter - 1.25"

    Astronomik - Dark Filter - 1.25"

    Do you have a CCD camera without a mechanical shutter and would like to do dark frames without continually monitoring your equipment?

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    Model#: DARK-1
    $39.95

  15. 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

  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 LRGB Filter Set 36mm Round Unmounted

    Astronomik - LRGB Filter Set - 36mm Round Unmounted

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

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    FREE SHIPPING
    (48 States)
    Model#: LRGB-36
    $449.95

  18. Astronomik - OIII 12nm CCD Filter - 31mm Round Unmounted

    Astronomik - OIII 12nm CCD Filter - 31mm Round Unmounted

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

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    Model#: OIIICCD-31
    $179.95

  19. Astronomik - OIII 12nm CCD Filter - 36mm Round Unmounted

    Astronomik - OIII 12nm CCD Filter - 36mm Round Unmounted

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

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    FREE SHIPPING
    (48 States)
    Model#: OIIICCD-36
    $224.95

  20. Levenhuk - 1.25" Ra UHC Filter

    Levenhuk - 1.25" Ra UHC Filter

    This filter was designed for observations of dim and low-contrast deep-sky objects. The passband includes the Hβ wavelength (4861 Å) and the OIII doublet (4959 Å and 5007 Å).

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    Model#: 45128
    $68.95

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