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  1. 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

  2. Astrodon - 1.25" Gen 2 Parfocal UV Blocked Clear Filter

    Astrodon - 1.25" Gen 2 Parfocal UV Blocked Clear 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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    Model#: C2-27R_gen2
    $140.00

  3. Astrodon - Photometric Sloan - 50mm Unmounted Gen2 g' Edge Blackened Square Filter

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 g' 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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    FREE SHIPPING
    (48 States)
    Model#: g'2-50S
    $440.00

  4. 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

  5. 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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    FREE SHIPPING
    (48 States)
    Model#: HA3-36R
    $650.00

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

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

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: C2_50R_Gen2
    $250.00

  7. 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.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: C2_50S_Gen2
    $295.00

  8. Astrodon Photometric UVBRIc 50mm Unmounted Rc Edge Blackened Square Filter

    Astrodon - Photometric UVBRIc - 50mm Unmounted Rc Edge Blackened Square 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#: Rc*-50S
    $440.00

  9. Astrodon 1.25" dia. Unmounted R Filter

    Astrodon - Photometric UVBRIc - 1.25" Mounted Rc 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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    Model#: Rc*-27R
    $200.00

  10. Astrodon Narrowband 50mm Unmounted NII 3 nm Square Filter

    Astrodon - Narrowband - 50mm Unmounted NII 3 nm Square 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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    FREE SHIPPING
    (48 States)
    Model#: NII3-50S
    $1,250.00

  11. Astrodon - 50mm Gen 2 Unmounted Square Y Filter

    Astrodon - 50mm Gen 2 Unmounted Square Y 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#: Y2-50S
    $440.00

  12. Astrodon - Narrowband - 1.25" Mounted SII 3 nm Filter

    Astrodon - Narrowband - 1.25" Mounted 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),

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: SII3-27R
    $490.00

  13. Astrodon - Narrowband - 50mm Unmounted H-Alpha 5 nm Filter

    Astrodon - Narrowband - 50mm Unmounted 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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    FREE SHIPPING
    (48 States)
    Model#: HA5-50R
    $725.00

  14. Astrodon - Narrowband - 50mm Unmounted OIII 5 nm Filter

    Astrodon - Narrowband - 50mm Unmounted 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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    FREE SHIPPING
    (48 States)
    Model#: OIII5-50R
    $725.00

  15. Astrodon - Narrowband - 50mm Unmounted SII 5 nm Filter

    Astrodon - Narrowband - 50mm Unmounted 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.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: SII5-50R
    $725.00

  16. 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

  17. 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).

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

  18. Astrodon Narrowband 50mm Unmounted  Red Continuum 5 nm Filter

    Astrodon - Narrowband - 50mm Unmounted 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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    FREE SHIPPING
    (48 States)
    Model#: REDCON5-50R
    $725.00

  19. Astrodon - Narrowband - 50mm Unmounted H-Alpha 3 nm Filter

    Astrodon - Narrowband - 50mm 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),

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: HA3-50R
    $995.00

  20. Astrodon - Narrowband - 1.25" Mounted OIII 3 nm Filter

    Astrodon - Narrowband - 1.25" Mounted 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),

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: OIII3-27R
    $490.00

Items 1 to 20 of 66 total

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