AR 2585 – September 1, 2016
Active region 2585 is very active these days, and offers a nice show in the Hydrogen alpha line.
I’ve experimented with a few settings on the Daystar Quark filter, the results being shown below. The images show slightly different contrasted details.
Equipment: 115mm APO Refractor, Daystar Quark Chromosphere H-alpha filter with Baader 1.25″ UV/IR-cut filter, ASI 174MM camera. 700 out of 3000 frames for each image.