Oxygen III Narrowband Filter

Installed this filter last night and the contrast on the Dumbbell Nebula was immediately better than my old dual-band setup. The 8nm bandpass really isolates the OIII signal without letting in too much sky glow.

I was worried the 8nm bandpass would cut too much signal, but it really brings out the faint OIII detail in my nebula shots without washing out the stars. Works perfectly with my standard camera setup so far.

Swapped this in on my rig last clear night and the 8nm bandwidth made a huge difference on the Veil—the doublet really pops now. Star shapes stayed tight even at f/5, which I wasn't completely expecting.