Also cross posted in the Astronomy Group
Since the latter part of '16 & mostly so far in '17, haven't had any extended clear skies to do much photon collecting. The brief outings w/ the K3ii have been basically all I've been able to collect, so looked back through some of my old data & found some captured w/the K5ii that I hadn't really worked with, so played around with it. Don't have easy access to the # of sub's & exposure time/ISO settings, but "guessing", probably around 30-50, with some & 800 & some @ 1600, & from 120s-480s, as this is kind of my normal routine on a target like this.
Used the SN8 f/4 w/the BaaderComaCorrector V1, & a LP filter (yet can't know/remember for sure if it was the CLS, or SkyGlow,or?)
Had to crop the field more than normal, as the stack used for the "L" layer was different from the one used for the RGB. It's evident in the upper right and a bit lower, as it was a bit tricky trying to line up the layers.
There are (2) versions. The first is "normal" processing (if one can call it that), in PS6..curves,levels,layers,Annies,Carboni's,GradeX,HLVG..all the "normal behavior" for those like myself to yet be a "Pixsiter" convert.
Added to this posting here:
Another PENTAX offering - DSLR & Digital Camera Astro Imaging & Processing - Cloudy Nights