Uncategorized · Astrophoto Filter
Antlia Sulfur II (SII) 2.5nm Ultra Narrowband 2" Filter (ANT-25-SII-2)
Antlia · sold by All-Star Telescope Canada · CAD 837.80 · in stock
The Antlia SHO 2.5nm Ultra series filters are made with quartz glass and undergo precisely controlled coating processes to ensure optimal performance. The 2.5nm Ultra series is designed with a FWHM (full width half maximum) of 2.5nm +0.3/-0.1nm and a transmission efficiency >92-95% at the Central Wavelength. The quartz glass possesses an ultra-low thermal expansion coefficient with outstanding thermal and mechanical properties. When combined with advanced coating processes, these filters exhibit remarkable durability for imaging and research in the most challenging environmental conditions.…
| Option | Price | Stock | |
|---|---|---|---|
| Default Title | CAD 837.80 | in stock | Order via Kaupia → · Buy at All-Star Telescope Canada |
Prices and stock from all-startelescope.com’s public catalog, last checked 2026-11-01 19:35 UTC. “Order via Kaupia” shows the delivered price to your zip (item + the store’s shipping + est. tax) and places the order through Kaupia with a delivery guarantee; “Buy at the store” goes to the store’s own checkout. Agents: JSON at https://api.kaupia.com/v1/product?id=kp:40e3c415-e81d-425c-baef-1bb314dc7cb2; delivered price GET /v1/quote; order with POST /v1/orders or MCP place_order.