Uncategorized · Astrophoto Filter

Antlia Hydrogen Alpha (Ha) 3nm Pro Highspeed 31mm Filter (ANT-HA-3NM-PRO-31MM-HS)

Antlia · sold by All-Star Telescope Canada · CAD 408.96 · in stock

Antlia's SHO 3nm Pro Highspeed Filters are further optimized for high-speed imaging systems by pre-shifting the center wavelength. This specially-optimized version will provide significantly SNR (Signal to Noise Ratio) for the fast telescopes with focal ratio between f/2.6 and f/3.6 than the standard 3nm Pro version. The optical light path of a telescope is cone-shaped, which creates an angle, and the center wavelength of the interference filter will shift toward shorter (blue) wavelengths as the angle of incidence (AOI) increases; the greater the angle, the greater the shift. The amount of…

Prices and stock from all-startelescope.com’s public catalog, last checked 2026-11-02 19:51 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:7df48bce-0cda-4ee6-bbb6-31153ad89860; delivered price GET /v1/quote; order with POST /v1/orders or MCP place_order.