It cleared up late last night, so I set up the observatory and went to bed. By the next morning MaxIm DL had managed to collect 2-1/2 hours of exposure before it shut down the observatory due to twilight. This is a Hubble palette Ha-SII-OIII shot of the Veil Nebula. Seeing was averaging around 3.3 arc-seconds so mediocre but not surprising. I always get my best seeing in the spring for some reason.
So much detail in there - the sensitivity of this camera is just nuts. There's really a lot of faint filaments in the background that I don't typically see from shots taken in suburbia. My guess is the daytime heating is the issue - sets up a lot of upper atmosphere convection, and formation of cumulus cloud beyond 40,000 feet. It takes quite a few hours for that to settled down. Any weather/upper atmosphere experts out that that can comment?
very well done Doug... Figured I'd give it a go also, this is only two stack at 6 minutes each. Seeing was about same ~3.5 FWHM. Didn't come close to the master. This always seemed a challenging object being somewhat dim. On the plus side, not an HDR.
