Skip to product information
1 of 3

Explore Scientific

Explore Scientific S-II 7nm Narrowband Filter 1.25" | Telescope Wolves

Explore Scientific S-II 7nm Narrowband Filter 1.25" | Telescope Wolves

Regular price $159.99
Regular price Sale price $159.99
Sale Sold out
Shipping calculated at checkout.
Quantity

Tighter bandwidth for deeper sulfur-II contrast. The Explore Scientific 7nm S-II filter 1.25-inch (310125) isolates the sulfur emission line with a narrow 7nm passband — maximizing rejection of light pollution and the Moon to reveal faint S-II emission in nebulae used for Hubble palette (SHO) color imaging. Pairs with H-Alpha and O-III filters to build a complete three-channel narrowband setup. Fits standard 1.25-inch filter threads. Ships free to the US.

View full details

Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
Most orders ship within 5 business days. You'll receive tracking information within 24 hours of your order leaving the warehouse. For full details, visit our Shipping Policy.
Orders cancelled after 48 hours are subject to a $20 administration fee. If your order has shipped, you are responsible for return shipping costs. Refunds are issued to the original payment method. See our full Refund Policy for details.
Yes! If you find a lower price at another authorized online retailer within 6 months of your purchase, we'll refund the difference. Learn more on our Price Match Guarantee page.
All telescopes on Telescope Wolves are hand-picked with beginners in mind. If you're unsure which telescope is right for you, check out our Telescope Buying Guide.
Please inspect your package on arrival and note any damage when signing for delivery. Send photos to info@telescopewolves.com and we'll process a claim on your behalf.
Absolutely. Our team is available Monday to Friday, 9am–5pm EST. The best way to reach us is by live chat (in the bottom right hand corner) or by email at info@telescopewolves.com. You can also visit our Contact Us Page.