This is a total of 12.5hours of 1800s subs in 3nm Ha and Oiii blended Ha, 70%Oiii + 30%Ha, Oiii
Kit list: Takahashi FSQ106ED @ f3.6, Atik 460exm, Chroma 3nm filters, 10 Micron GM1000HPS mount.
Acquired using SGPro (naturally!) (Beta 2.6.0.5 - which worked flawlessly for both nights I imaged this target) and PHD2, and processed in Pixinsight.
I’m very happy the Chroma filters in general. The Oiii particularly is an enormous improvement over my previous Baader filter - no flare, no reflections, no halos - just nice, tight stars (not as tight as the Ha stars, but nevertheless tight)
Here’s the stretched Oiii stack in case you’re interested:
Looks great Steve. It was mostly the halo issue I was wondering about.
I’ve heard great things about Chroma filters and am glad to see they have
3nm filters now.