Lunt 50mm tunable H-alpha filter 2" diagonal 12mm blocking filter for scopes under 1200mm focal length

I purchased this system when Lunt Solar Systems was first announced in 2008. It was an upgrade from a Coronado PST. I mounted it (with proper adapters) to a Borg 76ED scope. That system (the Borg 76ED with the Lunt LS50 filter) became my default (and only) H-alpha filter system for several years. Its views of the Sun were always pleasing and satisfying, and images taken with this system were spectacular. I still use this filter as a double-stack element for a Lunt LS60 H-alpha telescope. My only regret is that I wish I got the 60mm version of filter! (Posted on 10/21/2019)