Uncategorized · Astrophoto Filter

Antlia Hydrogen Alpha (Ha) 4.5nm EDGE 31mm Filter (ANT-HA-45NM-EDGE-31MM)

Antlia · sold by All-Star Telescope Canada · CAD 276.90 · in stock

Antlia H-alpha EDGE narrowband filter optimizes the FWHM (full width half maximum) to 4.5nm bandpass. The suppression of optical density (OD) 5 on unwanted wavelengths and the excellent transmittance characteristics found in the Antlia 3nm Pro series has been incorporated into the 4.5nm EDGE narrowband filters. The result is that these filters deliver superior SNR (signal to noise ratio) and better contrast in your images. Conventional broader narrowband filters cause a heavy loss in transmission due to the strong Center Wavelength (CWL)-shift. We guarantee T>90% within 1nm range of the…

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:2b83dc94-cab1-4788-96e4-da76016db61b; delivered price GET /v1/quote; order with POST /v1/orders or MCP place_order.