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  1. Optolong SII 6.5nm 1.25" filter Optolong SII 6.5nm 1.25

    Optolong SII 6.5nm 1.25" filter

    $159.00
    The SII 6.5nm from Optolong works fantastically as a photographic filter, but also works for viewing faint nebula.
  2. Optolong SII 6.5nm 2" filter Optolong SII 6.5nm 2

    Optolong SII 6.5nm 2" filter

    $229.00
    The SII 6.5nm from Optolong works fantastically as a photographic filter, but also works for viewing faint nebula.
2 Item(s)
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