I was a bit disappointed with my last effort for NGC6960, so I had another go. The image comprises of narrowband and broadband data, a HaOIIIRGB image, with each sub at 10 minutes in length. Thus we have 60 minutes for Ha, 230 minutes for OIII and 120 minutes for each of the R, G and B. The total exposure time was 650 minutes which is 10 hours and 50 minutes.
For M45, I had some difficulty sorting out the main star's halo, although I think it is a bit better than it was, but this is a straight RGB picture. Each sub was 5 minutes long and there were 12 subs for each of the R, G and B channels. The exposure time was thus 3 hours.
Pier 7 is a William Optics FLT132 F5.6 APO, with a QSI 660-WSG Mono CCD camera, all on a Paramount MX mount.
