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  1. Astronomik - LRGB Filter Set - 36mm Round Unmounted - Type 2c

    Astronomik - LRGB Filter Set - 36mm Round Unmounted - Type 2c

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

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    (48 States)
    Model#: LRGB-36
    $349.95

  2. 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
    $169.95

  3. 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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    Model#: OIIICCD-36R
    $189.95

  4. Astronomik - Planet IR Pro 742 Filter - 36mm Round Unmounted

    Astronomik - Planet IR Pro 742 Filter - 36mm Round Unmounted

    The Astronomik ProPlanet 742 is the ideal filter for imaging the moon and planets with telescopes 6" (150mm) aperture and greater....

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    Model#: P742-36
    $55.95

  5. Astronomik - Planet IR Pro 807 Filter - 31mm Round Unmounted

    Astronomik - Planet IR Pro 807 Filter - 31mm Round Unmounted

    The Astronomik ProPlanet 807 filter is a deal addition to the Astronomik ProPlanet 742 for imaging the moon and planets, with telescopes larger then 10" (250mm) when the seeing is poor.

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    Model#: P807-31
    $55.95

  6. Astronomik - Planet IR Pro 807 Filter - 36mm Round Unmounted

    Astronomik - Planet IR Pro 807 Filter - 36mm Round Unmounted

    The Astronomik ProPlanet 807 filter is a deal addition to the Astronomik ProPlanet 742 for imaging the moon and planets, with telescopes larger then 10" (250mm) when the seeing is poor.

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    Model#: P807-36
    $55.95

  7. Astronomik - SII 12nm CCD Filter - 31mm Round Unmounted

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

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

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    Model#: SII-31
    $169.95

  8. Astronomik - SII 12nm CCD Filter - 36mm Round Unmounted

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

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

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    Model#: SII-36
    $189.95

  9. Levenhuk - 1.25" Ra CLS' Filter

    Levenhuk - 1.25" Ra CLS' Filter

    Levenhuk Ra CLS 1.25'' filter is capable of enhancing the contrast of observed nebulae and other deep-sky objects, which will be very useful for those who often stargaze in the city.

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    Model#: 45130
    $59.95

  10. Opticstar 1.25" CRGbB Filter Set

    Opticstar - 1.25" CRGbB Filter Set

    These filters are positioned within a thin metal ring with a full 26mm clear aperture that threads into the barrel of any standard 1.25" eyepiece or filter wheel that can accept 1.25" filters.

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    Model#: OSRCRGB
    $85.50

  11. Baader Planetarium - Baader UHC-S Nebula Filter 50.4mm Square, L-Booster

    Baader Planetarium - Baader UHC-S Nebula Filter 50.4mm Square, L-Booster

    The Baader Planetarium UHC-S Nebula filter excels at delivering a high-contrast and natural view of emission nebula - without excessive dimming and loss of background star fields.

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    (48 States)
    Model#: FUHC-SQ50
    $226.00

  12. Orion 1.25" Sulfur-II Extra-Narrowband Filter

    Orion - 1.25" Sulfur-II Extra-Narrowband Filter

    Now you can capture dramatic Hubble-like CCD images of emission nebulas from the heart of the city or under a full Moon.

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    Model#: 05579
    $168.29

  13. Orion OIII Nebula Telescope Filter 2"

    Orion - OIII Nebula Telescope Filter 2"

    You can't turn up the luminosity on nebulas, but you can crank up the contrast between them and the sky to reveal more of their wondrous detail.

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    Model#: 05582
    $168.25

  14. Orion 1.25" Hydrogen-Beta Eyepiece Filter

    Orion - 1.25" Hydrogen-Beta Eyepiece Filter

    A Hydrogen-Beta telescope filter may be the only way to see the faint and elusive Horsehead, California, and Cocoon Nebulas.

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    Model#: 05583
    $116.00

  15. Orion 2" Hydrogen-Beta Nebula Eyepiece Filter
  16. Orion 1.25" H-Alpha Extra-Narrowband Filter

    Orion - 1.25" H-Alpha Extra-Narrowband Filter

    Get Great Nebula Images Under City Lights or a Full Moon with the Orion Hydrogen-Alpha Extra Narrowband Astrophotography Filter!

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    Model#: 05587
    $189.71

  17. Orion 1.25" Mars Observation Eyepiece Filter Set

    Orion - 1.25" Mars Observation Eyepiece Filter Set

    You may not see little green guys with antennae, but you will resolve plenty of subtle features with this Orion Mars-optimized telescope filter set. It consists of three 1.25" glass filters in threaded aluminum cells:

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    Model#: 05591
    $84.65

  18. Orion Deluxe Stargazer's 1.25" Eyepiece Filter Set
  19. Orion 1.25" 25% Transmission Moon Filter

    Orion - 1.25" 25% Transmission Moon Filter

    Useful telescope eyepiece filter transmits 25% of incoming light. Ideal for viewing crescent Moon phases and for lunar viewing in smaller-aperture telescopes, for which less dimming is required.

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    Model#: 05598
    $20.59

  20. Astronomik - ProPlanet 642 BP IR-Pass Filter - 1.25"

    Astronomik - ProPlanet 642 BP IR-Pass Filter - 1.25"

    The Astronomik ProPlanet 642 BP will give you three filters in one single product. Depending on your..... ... Learn More
    Model#: P642-1
    $59.95

Items 81 to 100 of 360 total

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