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  1. Levenhuk - 2" Ra O-III Filter

    Levenhuk - 2" Ra O-III Filter

    Levenhuk Ra O-III 2'' filter is a narrow-passband filter with a barrel diameter of 2'' that transmits wavelengths of the visible spectrum within 150 Å (15 nm) range.

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    Model#: 35436
    $94.95

  2. Levenhuk - 1.25" Ra O-III Filter

    Levenhuk - 1.25" Ra O-III Filter

    Levenhuk Ra O-III 1.25'' filter is a narrow-passband filter with a barrel diameter of 1.25'' that transmits wavelengths of the visible spectrum within 150 Å (15 nm) range.

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    Model#: 45127
    $74.95

  3. Levenhuk - 2" Ra H-Beta Filter

    Levenhuk - 2" Ra H-Beta Filter

    Levenhuk Ra H-Beta 2'' filter is used for observations of deep-sky objects, such as emission nebulae (H II) and others.

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    Model#: 35438
    $119.95

  4. Levenhuk - 1.25" Ra H-Beta Filter

    Levenhuk - 1.25" Ra H-Beta Filter

    Levenhuk Ra H-Beta 1.25'' filter may be used for deep-sky observations of emission nebulae and other marvels. Apart from enhancing the contrast of observed objects, this filter suppresses up to 90% of light.

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    Model#: 45129
    $97.95

  5. Levenhuk - 2" Ra CLS Filter

    Levenhuk - 2" Ra CLS Filter

    Levenhuk Ra CLS 2'' 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#: 35439
    $84.95

  6. 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

  7. 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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    (48 States)
    Model#: SII-36
    $229.95

  8. 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
    $179.95

  9. 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
    $69.95

  10. 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
    $59.95

  11. 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 filters for the reception of the moon and planets, notably Mars, with telescopes from 6" (150mm) aperture.

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    Model#: P742-36
    $74.95

  12. Astronomik - OIII Filter - SCT Rear Cell

    Astronomik - OIII Filter - SCT Rear Cell

    From the start, the Astronomik OIII filter has been very specifically designed for the visual observation of gaseous and planetary nebulae.

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    (48 States)
    Model#: OIII-SCT
    $239.95

  13. Astronomik - CLS Light Pollution Filter - 36mm Round Unmounted

    Astronomik - CLS Light Pollution Filter - 36mm Round Unmounted

    The Astronomik CLS is a budget filter for visual observation, Black & White photography and CCD photographs of nebulae, galaxies and star clusters with astronomical instruments of any size.

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    Model#: CLS-36
    $129.95

  14. Astronomik - CLS Light Pollution Filter - 31mm Round Unmounted

    Astronomik - CLS Light Pollution Filter - 31mm Round Unmounted

    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-31
    $99.95

  15. Chroma Technology - I Band 27mm Filter

    Chroma Technology - I Band 27mm Filter

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    Model#: I Band 27
    $110.00

  16. Chroma Technology - R Band 50mm Square Filter

    Chroma Technology - R Band 50mm Square Filter

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    FREE SHIPPING
    (48 States)
    Model#: R Band 50 Sq
    $220.00

  17. Chroma Technology - R Band 50mm Filter

    Chroma Technology - R Band 50mm Filter

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    FREE SHIPPING
    (48 States)
    Model#: R Band 50
    $220.00

  18. Chroma Technology - R-Band 27mm Filter

    Chroma Technology - R-Band 27mm Filter

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    Model#: R Band 27
    $110.00

  19. Chroma Technology - V-Band 50mm Square Filter

    Chroma Technology - V-Band 50mm Square Filter

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    FREE SHIPPING
    (48 States)
    Model#: V Band 50 Sq
    $220.00

  20. Chroma Technology - V-Band 50mm Filter

    Chroma Technology - V-Band 50mm Filter

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    FREE SHIPPING
    (48 States)
    Model#: V Band 50
    $220.00

Items 81 to 100 of 998 total

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