2" O-III Nebula Filter (310200)

I used this filter on a faint supernova remnant last night, and the contrast boost was dramatic—the two oxygen lines really made the structure pop. Even with my 8-inch scope, the view was cleaner than I'd expected.

Took this out to a dark site for the Veil Nebula and was blown away by how much it cut through light pollution. The dual O-III bands really make those faint supernova remnants pop against a black sky.

Used it last night on the Dumbbell Nebula and the difference was night and day from my unfiltered view, the background sky turned completely black. The two emission lines really cut through the light pollution perfectly.