Lumicon 1.25" Oxygen III (OIII) Filter - LF3040

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Lumicon 1.25" Oxygen III (OIII) Filter - LF3040 has a rating of 5.0 stars based on 5 reviews.

Item #LUMI-LF3040

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  • The Lumicon 1.25" OIII Filter isolates just the two doubly ionized oxygen lines
  • Faint objects become much more visible
  • Great for the Veil, Ring, Dumbbell and Orion
  • Performs great under light-polluted and dark skies
  • Each filter individually inspected by Lumicon
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  • Description

    The renowned, original Lumicon 1.25" OIII narrow bandpass filter (11nm) isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae while blocking the rest of the overall spectrum of light. The result is extreme contrast between the black background of space and the delicate photons of OIII light needed for near-photographic views of the Veil, Ring, Dumbbell and Orion nebulae, among other objects. See for yourself; it's truly amazing what the OIII filter allows you to see! Lumicon tests every filter individually on a Perkin-Elmer Double-Beam spectrophotometer, inscribing on the filter its % transmission for each of the primary lines. Do not settle for cheap imitations.

    Not intended for photography (use the Lumicon Deep Sky Filter).


    Supplier SKU


  • Dimensions & Specifications


    1.25 Inch




    1.25 Inches


    Oxygen III Filters

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    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    One Year

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

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