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Photometrics

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  1. Astrodon - Photometric Sloan - 1.25" Mounted Gen2 i' Edge Blackened Filter

    Astrodon - Photometric Sloan - 1.25" Mounted 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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    Model#: I'2-27R
    $200.00

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

    Astrodon - Photometric Sloan - 50mm Unmounted Gen2 r' 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#: r'2-50S
    $440.00

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

    Astrodon - Photometric UVBRIc - Johnson-Cousins 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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    (48 States)
    Model#: Ic*-50R
    $400.00

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