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  1. Astrodon 50mm Unmounted ExoPlanet-BB Filter

    Astrodon - 50mm Unmounted ExoPlanet-BB Filter

    Astrodon introduces the ExoPlanet-BB filter for use in amateur-scale telescopes to measure light curves of exoplanets.

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    (48 States)
    Model#: XOPBB-50R
    $285.00

  2. 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

  3. Astrodon - Tru-Balance E-Series - 50mm Square Generation 2 GREEN Filter

    Astrodon - Tru-Balance E-Series - 50mm Square Generation 2 GREEN Filter

    TRU-BALANCE FILTERSSIMPLIFY YOUR IMAGINGGreat Filters Just Got Better - Generation 2 Now Shipping!        Astrodon Tru-Balance RGB filters have revolutionized CCD imaging ... Learn More
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    (48 States)
    Model#: G2-E50S
    $300.00

  4. Astrodon 50mm Unmounted Clear Square Filter (UV-Blocked, No NIR Blocking)

    Astrodon - 50mm Unmounted Clear Square Filter (UV-Blocked, No NIR Blocking)

    Clear optical windows Pass all frequency of light to the detector.

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    (48 States)
    Model#: C2-50S
    $320.00

  5. Astrodon - Narrowband - 1.25" Mounted SII 5 nm Filter

    Astrodon - Narrowband - 1.25" Mounted SII 5 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, 501 nm), sulfur (SII, 672nm) and others.

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    (48 States)
    Model#: SII5-27R
    $330.00

  6. Astrodon Narrowband - 1.25" Mounted H-a 5 nm Filter

    Astrodon - Narrowband - 1.25" Mounted H-Alpha 5 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, 501 nm), sulfur (SII, 672nm) and others.

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    (48 States)
    Model#: HA5-27R
    $330.00

  7. Astrodon - Narrowband - 1.25" Mounted OIII 5 nm Filter

    Astrodon - Narrowband - 1.25" Mounted OIII 5 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, 501 nm), sulfur (SII, 672nm) and others.

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    (48 States)
    Model#: OIII5-27R
    $330.00

  8. Astrodon - Narrowband - 1.25" Mounted Red Continuum 5 nm Filter

    Astrodon - Narrowband - 1.25" Mounted Red Continuum 5 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, 501 nm), sulfur (SII, 672nm) and others.

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    (48 States)
    Model#: REDCON5-27R
    $330.00

  9. Astrodon - NIR Tricolor - 50mm NIRL Luminance Filter

    Astrodon - NIR Tricolor - 50mm NIRL Luminance Filter

    The NIR region remains largely unexplored by amateur imagers. Perhaps this is due to the impression that the Si CCD camera is not sufficiently sensitive in the NIR.

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    (48 States)
    Model#: NIRL-50R
    $335.00

  10. Astrodon 50mm Unmounted ExoPlanet-BB Square Filter

    Astrodon - 50mm Unmounted ExoPlanet-BB Square Filter

    Astrodon introduces the ExoPlanet-BB filter for use in amateur-scale telescopes to measure light curves of exoplanets.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: XOPBB-50S
    $360.00

  11. Astrodon UVenus 50mm Unmounted UV Filter

    Astrodon - UVenus - 50mm Unmounted UV Filter

    Astrodon introduces a breakthrough in UV filters for CCD imaging. A  durable, hard--coated UV filter of the highest quality having the best transmission available.

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    (48 States)
    Model#: UVenus-50R
    $385.00

  12. 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

  13. 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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    (48 States)
    Model#: Rc*-50R
    $400.00

  14. Astrodon Photometric UVBRIc 50mm Unmounted V Edge Blackened Filter

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

    UVBRI filters have been the standard for photometric measurements for decades.  They have evolved over time as technology changed.  H. Johnson in the 1950s and A.W.J. Cousins in the 1970s designed these filters for photomultiplier tubes (PMT).

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    (48 States)
    Model#: V*-50R
    $400.00

  15. Astrodon - Photometric Sloan - 50mm Unmounted Gen2 z_s Edge Blackened Filter

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 z_s 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_s2-50R
    $400.00

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

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

    UVBRI filters have been the standard for photometric measurements for decades.  They have evolved over time as technology changed.  H. Johnson in the 1950s and A.W.J. Cousins in the 1970s designed these filters for photomultiplier tubes (PMT).

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

  17. Astrodon - 50mm Gen 2 Unmounted Y Filter

    Astrodon - 50mm Gen 2 Unmounted Y 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#: Y2-50R
    $400.00

  18. Astrodon Photometric Sloan 50mm Unmounted Gen2 u' Edge Blackened Filter

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

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

    ...
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    FREE SHIPPING
    (48 States)
    Model#: u'2-50R
    $400.00

  19. Astrodon Photometric Sloan 50mm Unmounted Gen2 r' Edge Blackened Filter

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

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

    ...
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    FREE SHIPPING
    (48 States)
    Model#: r'2-50R
    $400.00

  20. Astrodon - Photometric UVBRIc - 50mm Unmounted B Edge Blackened Filter

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

    UVBRI filters have been the standard for photometric measurements for decades.  They have evolved over time as technology changed.  H. Johnson in the 1950s and A.W.J. Cousins in the 1970s designed these filters for photomultiplier tubes (PMT).

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: B***-50R
    $400.00

Items 21 to 40 of 97 total

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