Astrodon 5nm H-alpha Filter is the perfect tool for your imaging set up in order to knockout Hydrogen gas and pick up faint details

Astrodon HA5_36R H-Alpha Narrowband Filter for Astrophotography

♦ 36mm Narrowband Filter - unmounted

♦ Emission line: H-Alpha 5nm bandwidth

♦ Thickness: 3mm - parfokal with all other Astrodon filters

♦ Transmission: better than 90%