6 m.o - Top Quality 9nm 97.2% Lumicon H-Beta Filter (Horse Head) 2" SCT. Mint
In many cases, the Lumicon Hydrogen-Beta Filter is the ONLY way to view these objects. Top Quality Lumicon H-Beta Filter (Horse Head) SCT 1386. "The Best H-Beta filter available" - this is how this Lumicon filter is widely regarded.