M33

[xanthic]

Thanks to a run of clear nights, I gathered this data over four sessions, using my Esprit 100, ASI533MC and Optolong l-pro. This is the longest integration I've managed to date, with 515 x 120 sec. No Xtermintors used, I personally think they are detrimental. I'd rather have a noisy image than one "fixed" by AI.

 

Edited January 26, 2023 by xanthic

[Sarek]

Great picture, you must be pleased with that.

I'm interested to know what calibration frames you took and when. Were you guiding as well? How did you settle on 120 seconds as your exposure time?

[xanthic]

13 minutes ago, Sarek said:

Great picture, you must be pleased with that.

I'm interested to know what calibration frames you took and when. Were you guiding as well? How did you settle on 120 seconds as your exposure time?

Thanks Sarek! I used 30 dark flats and 30 flats. Same set for all 4 sessions as they were only days apart. The target is fairly faint, so 2 mins seemed reasonable. If I had the time, it'd be interesting to see if different sub lengths gave a better end result.

The subs are guided, I use ZWO AM5 mount with an ASIAir Plus.