M16 taken last night. Quite windy so couldn't continue the 8" Newt short exposure experiments so thought I'd try something else with the ED80. I have a 5nm Ha filter and, thanks to some bargain hunting, found an SII 3nm filter online. I have on order an OIII 3nm filter but after being sent the wrong one its replacement is yet to arrive. So, I'd thought I catch some data anyway and see what I could get. Ha is 59 x 2 minute subs, and SII is 29 x 2 minute subs (it got cold and late to get the matching number). While I've had fun playing with combining them in StarTools some areas remain really unclear. How far to stretch the SII data? Is some noise okay or should it really be as clean as possible even if much less visible data? The Ha and SII stacked files are attached as well as the final result - Ha as luminance and an Ha/SII/SII RGB composite loaded into each of the RGB channels. So while I had hoped to kick off with a SHO narrowband this will have to do. Comments always welcome, particularly those who use StarTools or see compelling reasons to process this differently, or just anything to do with Narrowband imaging... I know nothing...
Astrobin link:
https://www.astrobin.com/full/351715...cks&real=&mod=