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  1. 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

  2. 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

  3. Chroma filters

    Chroma Technology - Green 27mm Diameter Filter - Mounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

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    Model#: Green-27
    $125.00

  4. Chroma Technology Blue 27mm Diameter Filter Mounted

    Chroma Technology - Blue 27mm Diameter Filter - Mounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

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    Model#: Blue-27
    $125.00

  5. Chroma filters

    Chroma Technology - Blue 31mm Diameter Filter - Unmounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

    ...
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    Model#: Blue-31
    $130.00

  6. Chroma Technology - Green 31mm Diameter Filter - Unmounted

    Chroma Technology - Green 31mm Diameter Filter - Unmounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

    ...
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    Model#: Green-31
    $130.00

  7. Chroma Technology - Red 31mm Diameter Filter - Unmounted

    Chroma Technology - Red 31mm Diameter Filter - Unmounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

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    Model#: Red-31
    $130.00

  8. Chroma filters

    Chroma Technology - Luminance 31mm Diameter Filter - Unmounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

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    Model#: Lum-31
    $130.00

  9. Chroma filters

    Chroma Technology - Blue 36mm Diameter Filter - Unmounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

    ...
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    Model#: Blue-36
    $155.00

  10. Chroma filters

    Chroma Technology - Green 36mm Diameter Filter - Unmounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

    ...
    Learn More
    Model#: Green-36
    $155.00

  11. Chroma filters

    Chroma Technology - Red 27mm Diameter Filter - Mounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

    ...
    Learn More
    Model#: Red-27
    $125.00

  12. Chroma filters

    Chroma Technology - Luminance 27mm Diameter Filter - Mounted

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

    ...
    Learn More
    Model#: Lum-27
    $125.00

  13. Shelyak Instruments Star Analyser 100 and M42-31.75 Adapter

    Shelyak Instruments - Star Analyser 100 and M42-31.75 Adapter

    The Star Analyser 100 is a high efficiency 100 lines/mm transmission diffraction grating, blazed in the first order. It is mounted in a standard 1.25 inch diameter threaded cell, to be compatible with most telescopes and accessories. It has been designed to make the production of low resolution spectrum images of a wide range of point like astronomical objects as easy as possible.

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    Model#: PF0003+BA0016
    $239.95

  14. 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

  15. 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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    FREE SHIPPING
    (48 States)
    Model#: SII-36
    $229.95

  16. Astrodon Photometric UVBRIc 50mm Unmounted Rc Edge Blackened Filter

    Astrodon - Photometric UVBRIc - 50mm Unmounted Rc Edge Blackened Filter

    Astrodon Photometrics - UVBRI filters have been the standard for photometric measurements for decades.

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    FREE SHIPPING
    (48 States)
    Model#: Rc*-50R
    $400.00

  17. Farpoint - Romor 48mm UV Filter

    Farpoint - Romor 48mm UV Filter

    Romor 48mm threaded UV filter. Threads fit 2" eyepiece end forming a dust cap. ... Learn More
    Model#: FP502
    $6.80

  18. 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

    Regular Price: $90.00

    Special Price: $85.50

  19. IDAS - Hutech - UV/IR Blocking Filter (to be used with MFA37)

    IDAS - Hutech - UV/IR Blocking Filter (to be used with MFA37)

    IDAS Hutech UV/IR Blocking Filter (to be used with MFA37).

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    Model#: UIBAR-37
    $179.00

  20. IDAS - Hutech - Light Pollution Suppression Filter (to be used with MFA)

Items 21 to 40 of 340 total

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