SKU: 86855929374

Nebula Filter S-II 1.25-inch 6.5nm

Sale price$143.99 Regular price$159.99
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Description

Nebula Filter S-II 1.25-inch 6.5nmSee Faint Nebulae Clearly, Even in Light Polluted Skies Struggling to observe deep sky objects through city lights? The Explore Scientific S II Filter reveals faint nebulae with enhanced contrast, without upgrading your telescope. Features 6. 5nm Passband Bandwidth: Specially designed to isolate the ionized sulfur (S II) emission line at 672nm, allowing you to observe faint nebulae and deep sky objects with enhanced clarity. Blocks Artificial Light:

See Faint Nebulae Clearly, Even in Light-Polluted Skies

 

Struggling to observe deep-sky objects through city lights? The Explore Scientific S-II Filter reveals faint nebulae with enhanced contrast, without upgrading your telescope.

 

Features

  • 6.5nm Passband Bandwidth: Specially designed to isolate the ionized sulfur (S-II) emission line at 672nm, allowing you to observe faint nebulae and deep-sky objects with enhanced clarity.
  • Blocks Artificial Light: Effectively absorbs most artificial light, including streetlights and other common light pollution sources, for clearer, high-contrast views in urban and suburban environments.
  • Optimized for 1.25-Inch Eyepieces: Perfect for smaller telescopes with 1.25-inch eyepieces, making it an accessible, high-performance tool for beginner to intermediate astronomers and astrophotographers.
  • Improved Contrast and Detail: Dramatically increases the contrast and detail in faint planetary nebulae, emission nebulae, and supernova remnants, revealing celestial objects that are often invisible without a filter.
  • Premium Quality with Individual Test Report: Each filter comes with an individual test report, ensuring top-tier quality and performance, so you can trust that you're receiving a precision-tested product.
  • Astrophotography Friendly: Ideal for astrophotographers looking to enhance deep-sky imaging by reducing light pollution, delivering sharper and clearer images of nebulae from light-polluted skies.

The Explore Scientific S-II 1.25-Inch Nebula Filter is for you if…

  • You’re struggling to observe faint nebulae or deep-sky objects due to light pollution in your city or suburb.
  • You use a telescope with a 1.25-inch eyepiece and need a high-quality, compatible filter to improve your stargazing experience.
  • You’re a beginner or intermediate astrophotographer who wants to capture clearer, more detailed images of nebulae, even in light-polluted areas.
  • You want a filter that significantly enhances contrast and detail without needing to upgrade your telescope or travel to dark-sky locations.
  • You seek a reliable, premium filter that comes with an individual test report, ensuring it meets professional standards for both visual observation and astrophotography.

If you're an urban or suburban astronomer struggling to observe faint nebulae, planetary nebulae, and supernova remnants, the Explore Scientific S-II 1.25-inch Nebula Filter is your ideal solution. Light pollution from streetlights and artificial sources makes it nearly impossible to see the delicate structures of these deep-sky objects. This filter is specially designed to block nearly all artificial light and isolate the specific ionized sulfur (S-II) emission line at 672nm, making faint nebulae visible with stunning clarity. Instead of just glimpsing a faint glow, you’ll be able to see the intricate details of objects like the Crab Nebula or the Helix Nebula.

Tailored for telescopes with 1.25-inch eyepieces, this filter is perfect for beginner to intermediate astronomers who use standard-sized equipment and don’t want to invest in larger, more expensive setups. The 6.5nm passband bandwidth precisely isolates the emission from ionized sulfur while filtering out the surrounding light. This allows you to observe deep-sky objects that are normally invisible under light-polluted conditions, providing a noticeable boost in contrast and detail. Whether you're observing from your backyard, a suburban rooftop, or a balcony, the Explore Scientific S-II filter helps you experience the cosmos without the need for dark-sky locations.

For astrophotographers, the benefits of the Explore Scientific S-II Filter are clear. By reducing unwanted light pollution, it dramatically enhances your ability to capture sharp, detailed images of emission nebulae. Picture photographing the Veil Nebula or the Eagle Nebula from a suburban setting and getting crisp, high-contrast results, without the typical haze and interference from city lights. The narrow 6.5nm passband enables you to isolate ionized sulfur emissions, making your long-exposure shots stand out with greater clarity and structure.

Plus, each filter is individually tested and comes with a test report, ensuring that you're receiving a premium product that meets rigorous quality standards. You’ll know that your filter is optimized for the best possible performance. If you’re ready to take your deep-sky observation or astrophotography to the next level, the Explore Scientific S-II 1.25-inch Nebula Filter is an essential tool for cutting through light pollution and revealing the hidden beauty of the universe. Don't let city lights hold you back—start seeing what you've been missing.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 86855929374

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Geraldine
Omaha, US
★★★★★ 5
Good cushion and comfort for long term wear
Color: Green, 4 Pack, Size: Small
Great quality, very soft and cushioned.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
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Kalee B.
Waukegan, US
★★★★★ 4
Good replacement for GI socks
Color: Green, 4 Pack, Size: Medium
I ordered these for my son, he’s in the military and the socks they issued him were all getting holes worn in the top of the toe area from his work boots. So I ordered him some of these to supplement his normal ones. He said they’re pretty comfortable, we’ll see how they hold up after he wears them for awhile. But initially I’d say they’re a good buy. Points for the affordability.
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Reviewed in the United States on February 23, 2026
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Derek Boyce
Draper, US
★★★★★ 5
Better than described
Color: Green, 4 Pack, Size: Large
Very comfortable socks that stay up in my boots. Look forward to purchasing more!
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Reviewed in the United States on May 30, 2026
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Chris R.
Phoenix, US
★★★★★ 5
New Socks (Finally)
Color: Green, 4 Pack, Size: Large
I haven’t treated myself to new boot socks in WAY too long and all my old ones were starting to get holes in them, so I figured it was time. These were easily the best deal, being really soft and comfortable for a decent price. Hopefully they last a long time!
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Reviewed in the United States on February 5, 2026
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Jaren LeCompte
Birmingham, US
★★★★★ 5
Comfortable, solid sock
Color: Green, 4 Pack, Size: Large
Out of all the military socks I've worn, these are the best. Super comfortable, not that thick heavy material you normally see. These will be my go to from now on. My only gripe is that as a taller person, these socks only go halfway up my calf, but thats a marginal complaint. Definitely get these if you wear these types of socks a lot.
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Reviewed in the United States on March 5, 2026

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