Hello,
very quick imaging session with a vintage 300 f/4.5 telelens, a filter wheel and the ASI178MM cooled down to -10°C. The location was a swamp, we were attacked by mosquitos and the haze ended the imaging session. In addition, the objects were very low, 10-15° above the horizon. Thus I took advantage of 3x binning to strongly shorten the exposure. I didn't have time enough to take B and G images of Omega. The B image of Trifid was completly spread by haze and water vapor above the swamp.
One dark only, no offset, no autoguiding.
I played with the curves to synthesize red shades of Omega while keeping the stars white.
The results are by far superior to DSLR despite the poor conditions.
Nicolas.
