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  1. Astrodon - Photometric Sloan - 50mm Unmounted Gen2 z' Edge Blackened Square Filter

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 z' Edge Blackened Square Filter

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

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    (48 States)
    Model#: z'2-50S
    $440.00

  2. Astrodon Photometric Sloan 50mm Unmounted Gen2 z' Edge Blackened Filter

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 z' Edge Blackened Filter

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

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    (48 States)
    Model#: z'2-50R
    $400.00

  3. Astrodon - Photometric Sloan - 1.25" Mounted Gen2 z' Edge Blackened Filter

    Astrodon - Photometric Sloan - 1.25" Mounted Gen2 z' 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#: z'2-27R
    $200.00

  4. Astrodon Photometric Sloan 50mm Unmounted Gen2 i' Edge Blackened Square Filter

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 i' Edge Blackened Square Filter

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

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    (48 States)
    Model#: i'2-50S
    $440.00

  5. Astrodon Photometric Sloan 50mm Unmounted Gen2 i' Edge Blackened Filter

    Astrodon - Photometric Sloan - 50mm Unmounted 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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    (48 States)
    Model#: i'2-50R
    $400.00

  6. Astrodon - 50mm" Gen 2 Parfocal UV Blocked Clear Square Filter

    Astrodon - 50mm" Gen 2 Parfocal UV Blocked Clear Square Filter

    Astrodon's new improvements of photometric Sloan filters generation 2 feature excellent out of band clocking and other edge-blackended compounds to reduce stray light reflections to assist in CCD imaging.

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    (48 States)
    Model#: C2_50S_Gen2
    $295.00

  7. SBIG - FW5-STX Filter Wheel

    SBIG - FW5-STX Filter Wheel

    Filter wheel for STX series cameras, 5-position 65mm square filters.

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    (48 States)
    Model#: FW5-STX
    $1,795.00

  8. Orion - 2" Extra-Narrowband Oxygen III Filter

    Orion - 2" Extra-Narrowband Oxygen III Filter

    If you're using a monochrome CCD camera like Orion's Parsec 8300M, these specialized "line" filters are the perfect complement. Orion's 2" Oxygen-III Filter has a full-width half maximum (FWHM) bandpass of just 7nm, ensuring high-contrast images, even in heavily light-polluted or brightly moonlit skies. The filter can be used separately or in combination with a filter wheel for advanced tri-color imaging of emission nebulae.

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    Model#: 05545
    $359.95

  9. IDAS Hutech 28.6mm Nebular Filter II

    IDAS - Hutech - 28.6mm Nebular Filter II

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    Model#: LPS-V4-28.6
    $189.00

  10. IDAS Hutech 28.6mm Nebula Filter

    IDAS - Hutech - 28.6mm Nebula Filter

    "A chain is only as good as its weakest link." This well-known truth applies to many "chains", including the optical chain, which includes a telescope, eyepiece, and filter.

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    Model#: LPS-V3-28.6
    $59.00

  11. IDAS - Hutech - LRGB set (31mm unmounted) for QSI 500 series

    IDAS - Hutech - LRGB set (31mm unmounted) for QSI 500 series

    Hutech LRGB filter set for QSI 500 series cameras.

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    (48 States)
    Model#: RS-31
    $575.00

  12. FLI - 7 position Color Filter Wheel (for 65mm square filters)

    FLI - 7 position Color Filter Wheel (for 65mm square filters)

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    (48 States)
    Model#: CFW-10-7
    $2,795.00

  13. Astrodon - Narrowband - 36mm Unmounted OIII 3 nm Filter

    Astrodon - Narrowband - 36mm Unmounted OIII 3 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),

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    (48 States)
    Model#: OIII3-36R
    $650.00

  14. Astrodon - Narrowband - 36mm Unmounted SII 3 nm Filter

    Astrodon - Narrowband - 36mm Unmounted SII 3 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),

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    (48 States)
    Model#: SII3-36R
    $650.00

  15. Astrodon - Narrowband - 36mm Unmounted H-Alpha 3 nm Filter

    Astrodon - Narrowband - 36mm Unmounted H-Alpha 3 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),

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    (48 States)
    Model#: HA3-36R
    $650.00

  16. Opticstar - 1.25" High Transparency Imaging Filters

    Opticstar - 1.25" High Transparency Imaging Filters

    These high transparency filters from Opticstar are placed 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#: OSRHRGBI

    Regular Price: $150.00

    Special Price: $142.50

  17. Opticstar - 1.25" Infra-Red Cut-Off Imaging Filter

    Opticstar - 1.25" Infra-Red Cut-Off Imaging Filter

    For the use in CCD imaging this high-transmission filter will exclude any IR wavelengths beyond H-alpha showing a very steep desirable curve.

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    Model#: OSRIFIR

    Regular Price: $45.00

    Special Price: $42.75

  18. Opticstar - 2" Nebula Deep Sky Filter

    Opticstar - 2" Nebula Deep Sky Filter

    This Opticstar 2" eyepiece is suitable for both visual observation and imaging these are all-in-one high-transmission deep sky filters.

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    Model#: OSRIFNEB2

    Regular Price: $105.00

    Special Price: $99.75

  19. Orion - 2" Extra Narrowband Filter Set

    Orion - 2" Extra Narrowband Filter Set

    These specialized astrophotography filters pass select wavelengths and essentially block all other wavelengths of light, including light pollution, so you can capture images in less than ideal conditions.

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    Model#: 25545
    $969.95

  20. Orion - 2" Extra-Narrowband Hydrogen Alpha Filter

    Orion - 2" Extra-Narrowband Hydrogen Alpha Filter

    Filter for astrophotography transmits 90% of light at 656.3nm wavelength (H-alpha).

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    Model#: 05547
    $359.95

Items 41 to 60 of 998 total

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