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1.25" Filters

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  1. Custom Scientific H-Alpha 656.3/4.5 nm Filter 1.25" Round Mounted

    Custom Scientific - H-Alpha 656.3/4.5 nm Filter - 1.25" Round Mounted

    The Custom Scientific H-Alpha 656.3/4.5 nanometer filter is a great accessory for imaging emission nebulae which emit large amounts of the H-Alpha spectral line at a 4.5 nanometer bandpass due to excited hydrogen atoms.

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    (48 States)
    Model#: CU-HA45NM-125
    $600.00

  2. Custom Scientific UBVRI 1.25" Mounted Round Filter Set

    Custom Scientific - UBVRI 1.25" Mounted Round Filter Set

    Custom Scientific UBVRI filters have been used in institutions and observatories around the world such as Kitt Peak, Mauna Kea, and the CTIO/Chile.

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    (48 States)
    Model#: CU-UBVRI125-SET
    $875.00

  3. Baader Planetarium Set of 5 Photometric UBVRI Filters 1.25" (4mm Glass Thickness, Optically Polished)

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