My first try of the combo, SH2-129 Flying Bat and OU-4 Squid Nebula. I think they don't need any introduction.
This is by far the most demanding project I've ever done. My f/5.6 optics is a bit slow and Bortle 5/6 skies certainly don't give me a lot of advantage in terms of capturing those elusive photons. I could barely see anything in a single 10 min sub. From reading several CN discussions, I knew that the Squid is extremely faint, but I never realized this animal is so shy that you need tons of subs for it to show up. Luckily, over the past 20 days or so the weather in Northern California was really nice. The cloud coverage was constantly around or below 6-8%, the worst being 12-15%. So apart from a guiding issue I still need to sort out, imaging went pretty smoothly.
Processing the data, however, is another story. Even with hundreds of subs, the OIII signal in the master light is mixed with noise. Stretching the Squid without blowing up the noise was really pushing my processing skills to the limit. I ended up using a mask in order to suppress the noise. Not a fan of the approach, but that is the best I can do. Now I realize why people go to dark sites for serious works
All in all, this is a fun project and I certiainly learned a lot from it...
R: 10 x 300s
G: 10 x 300s
B: 10 x 300s
Ha: 219 x 300s
OIII: 321 x 300s + 146 x 600s
Total integration time: 71 hrs 50 mins