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    Orion has made the difficult decision to close our warehouse facility in the Netherlands. With the continuing supply chain/logistics challenges and slowness in the economy we have found that it is not economically feasible to maintain operations in the UK and Europe.

    We have therefore stopped taking orders on this website. We apologize for any inconvenience.

    We will continue to have Orion dealers in Europe to meet the needs of Orion consumers. We will also continue to honor the 30-Day product return period as well as honoring the Orion warranty for purchases made in the UK and Europe.

    Our US-based Customer Service Representatives are here to help. Contact them via email at support@telescope.com or in the United Kingdom, via phone at 0-800-041-8146 (Monday-Friday between the hours of 1300 and 2400 GMT).

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    Orion Oxygen-III Nebula Filters for Eyepieces

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    Orion Oxygen-III Nebula Filters for Eyepieces

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    € 99.99 - € 129.99
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    • Our Oxygen-III Nebula filter provides extremely selective filtration to bring out elusive detail in diffuse and planetary nebulas
    • Orion's O-III eyepiece filter transmits close to 90% of the light corresponding to the two oxygen-III spectral lines at 496nm and 501nm while completely blocking virtually all other wavelengths
    • The O-III Nebula filter provides enhanced views of diffuse and planetary nebulas such as the Veil, Swan, Ring, Dumbbell, Helix, and Eagle nebulas, to name a few
    • Recommended for visual use, not intended for astrophotography
    • Available in two sizes, 2" and 1.25" for use with either 2" or 1.25" telescope eyepieces and accessories
    More Info

    You can't turn up the luminosity on nebulas, but you can crank up the contrast between them and the night sky to reveal more of their wondrous detail. Our Oxygen-III filters provide extremely selective filtration to bring out elusive detail in diffuse and planetary nebulas. These filters do so by transmitting close to 90% of the light corresponding to the two oxygen-III spectral lines at 496nm and 501nm while completely blocking virtually all other visible wavelengths.

    The results are remarkable. You'll see more detail than you ever could before in nebular gems such as the Swan, Ring, Dumbbell, Helix, and Eagle, to name a few. The O-III provides an even greater contrast boost on some objects than the UltraBlock narrowband filter. And for nebulas, every little bit helps! Try the O-III with a low-power 2" eyepiece and take in the whole Veil Nebula. Wow!

    Due to the amount of light blockage, the O-III filter is recommended for telescopes of 8" aperture or greater, and for visual use only. It features the highest quality optical glass in a double-threaded, anodized aluminum cell.


    Warranty
    Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-447-1001.
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    Why Buy From Orion

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    Since 1975

    Why Buy From Orion

    • 30 Day Money Back Guarantee
    • Safe & Secure Shopping
    • Next Day Shipping
    • Easy Returns
    • Sale Price Guarantee
    • Free Technical Support
    More Information
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    About Orion Telescopes & Binoculars

    Since 1975 Orion Telescopes & Binoculars has been offering telescopes for sale direct to customers. Now an employee-owned company, we pride ourselves on an unswerving commitment to best quality products, value and unmatched customer care. Our 100% satisfaction guarantee says it all.

    Orion offers telescopes for every level: Beginner, Intermediate, and Advanced. From our entry-level beginner telescopes for amateur astronomers to our Dobsonian telescopes to our most advanced Cassegrain telescopes and accessories, you can find the best telescope for you. Because we sell direct, we can offer you tremendous value at a great price. Not sure how to choose a telescope? Orion's Telescope Buyer's Guide is a great place to start.

    Orion binoculars are known for quality optics at a great price. We offer binoculars for every viewing interest, including astronomical binoculars, compact binoculars, waterproof binoculars, birding binoculars, and sport and hunting binoculars.

    Orion's telescope and astrophotography accessories will enhance your telescope enjoyment without breaking the bank. Expand your viewing experience with accessories ranging from moon filters to power-boosting Barlow lenses to advanced computerized telescope mounts. Capture breathtaking photos with our affordable astrophotography cameras. And when you're stargazing, Orion's telescope cases and covers, observing gear, red LED flashlights, astronomy books and star charts will make your observing sessions more convenient, comfortable and meaningful.

    At Orion, we are committed to sharing our knowledge and passion for astronomy and astrophotography with the amateur astronomy community. Visit the Orion Community Center for in-depth information on telescopes, binoculars, and astrophotography. You can find astrophotography "how to" tips and share your best astronomy pictures here. Submit astronomy articles, events, and reviews, and even become a featured Orion customer!