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  1. LP-3 Oxygen III line band filter for 2" ep LP-3 Oxygen III line band filter for 2

    LP-3 Oxygen III line band filter for 2" ep

    $159.50
    2 Review(s)
    Product description coming soon . . . . . .
  2. 48mm Oxygen III line band filter for 2" eyepieces 48mm Oxygen III line band filter for 2

    48mm Oxygen III line band filter for 2" eyepieces

    $139.95
    1 Review(s)
    This 2" Celestron Oxygen III light pollution filter has a very narrow passband that blocks out almost all unwanted light pollution, making it a good choice for nebula observing from city and suburban locations . . .
  3. Optolong Oxygen OIII 6.5nm 2" filter Optolong Oxygen OIII 6.5nm 2

    Optolong Oxygen OIII 6.5nm 2" filter

    $229.00
    Take your imaging up a notch with the improved OIII filter from Optolong.
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