Lumicon 2" Comet Filter - LF3075

First night out with this filter and the difference on comets is striking—the C2 lines at 511 and 514 nm really make the coma pop against a dark sky. I was expecting a subtle change, but the 25nm band-pass cuts through light pollution like nothing else. Already my go-to for lunar imaging too.

I was initially skeptical about how much difference it would make on my 8-inch Dob, but the first night I used it on the Swan Nebula the C2 lines at 511 nm and 514 nm really made the structure pop. That narrow 25 nm band-pass cuts through light pollution like nothing else I've tried, and I'm even pi

I've had this 2" filter for a few weeks now, and the 25 nm band-pass on the OIII line really makes the comet's structure pop without washing out the surrounding stars. It threaded onto my focuser smoothly and feels solid.