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    • Please Note

    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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    Telescope & Eyepiece Filters
     
    Orion UltraBlock Narrowband Filters

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    Orion UltraBlock Narrowband Filters

    Free Standard Shipping

    € 79.99 - € 99.99
    Accepted Payment
    • Orion UltraBlock eyepiece filters greatly increase contrast of emission and planetary nebulas when viewing from areas plagued with significant light pollution
    • Using an UltraBlock eyepiece filter allows you to see features and details that would normally be lost due to light pollution
    • UltraBlock filters block all forms of light pollution while passing critical hydrogen-beta and ionized oxygen wavelengths of light
    • Enhances the sky presence of a significant number of fainter deep-sky objects
    • Available in both 1.25" and 2" sizes, compatible with 1.25" and 2" Orion telescope eyepieces threaded for filters
    More Info

    If you observe from highly light-polluted sites, or if you want the maximum contrast enhancement for observing faint emission nebulas from areas of moderate light pollution, an Orion UltraBlock filter is just for you. With an UltraBlock filter attached to your telescope eyepiece, emission and planetary nebulas are visible from urban areas, where they are completely invisible without such a filter! In darker-sky locations with only moderate light pollution, many celestial objects will appear significantly enhanced over unfiltered and wideband-filtered views. Orion UltraBlock filters block all forms of light pollution. They reject wavelengths from incandescent and fluorescent lighting, which wideband filters cannot stop. Extremely high (99.9%) blocking of critical mercury and sodium emission bands and very high transmission of hydrogen-beta and ionized oxygen wavelengths result in the highest contrast gain of any competing light pollution filter. Available in 1.25" or 2" sizes for use with either 1.25" telescope eyepieces or 2" oculars, Orion UltraBlock filters make views of emission and planetary nebulas better. Get one today for your own telescope eyepieces!


    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

    • 30 Day Money Back Guarantee
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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!