Astrodon 2nd Quality Filters

10 products

    Astrodon filters are known for the highest of quality and perfection.  Some of our filters don't make the cut to be sold in our premium line, however they are still excellent by normal standards and we are offering them here at a discount.

    Please keep in mind that even though we have "rejected" these filters they still exceed industry standard for optical filters.  Have confidence that these filters will still produce the same high quality images as our other filters even though they have a minor imperfection.

    These filters are offered at 50% list price and are limited to stock on hand.  Returns will only be accepted if the filter is in exactly the same condition we sent it.  We photograph each filter in transmission and reflection as part of our QC process and images are retained for reference.  A 25% re-stocking fee will be assessed for returns.


    10 products
    Astrodon 3 nm Narrowband H-alpha Filter (6795795202201)
    5 nm Narrowband Filters - RedCon (6795795202201)
    2nd Quality Astrodon 3 nm Narrowband H-alpha Filter
    from $341.00
    Astrodon Narrowband Astrophotography Filters - OIII 3nm (6795795267737)
    5 nm Narrowband Filters - RedCon (6795795267737)
    2nd Quality Astrodon 3 nm Narrowband OIII Filter
    from $341.00
    Astrodon 3 nm Narrowband Filters - SII filter (6795795333273)
    2nd Quality Astrodon 3 nm Narrowband Filters - SII filter
    from $341.00
    Astrodon 5nm Narrowband Filters - H-alpha 5nm (6795794874521)
    2nd Quality Astrodon 5nm H-Alpha Narrowband filter
    from $229.90
    Astrodon 5 nm Narrowband Filters - SII 5nm (6795794972825)
    5 nm Narrowband Filters - RedCon (6795794972825)
    2nd Quality Astrodon 5nm SII Narrowband filter
    from $229.90
    Astrodon LRGB Gen2 I-Series Tru-Balance Filters, INDIVIDUAL FILTERS (6795795988633)
    Astrodon LRGB Gen2 E-Series Tru-Balance Filters_comp (6795795988633)
    2nd Quality Astrodon LRGB Gen2 E-Series Tru-Balance Filters, INDIVIDUAL FILTERS
    from $111.10
    Sold Out
    NII3 28 (6795795234969)
    2nd Quality Astrodon Narrowband Filters - 3nm NII Filter
    from $341.00
    Astrodon Photometrics Johnson-Cousins Filters (6795795660953)
    Astrodon Photometrics UVBRI Filters_3 (6795795660953)
    2nd Quality Astrodon Photometrics Johnson-Cousins Filters
    from $130.90
    Astrodon Photometrics Sloan Filters (6795795464345)
    Astrodon Photometrics Sloan Filters (6795795464345)
    2nd Quality Astrodon Photometrics Sloan Filters
    from $130.90
    Sold Out
    MOAG Eye (6795795792025)
    2nd Quality Astrodon ExoPlanet Light Curve Filters
    from $111.65