NGC 6823

[Rodd]

I’m posting this to give hope to the frustrated imager who struggles with a turbulent sky, hesitating to make the decision to call it a night due to breezy, poor conditions.  The night before, my total guiding rms error was around .4”. This night, no matter what I did - long guide subs, low aggressiveness, high aggressiveness, short guide subs, a range of min move values, recalibrations, changing guide stars, focusing guider - nothing worked.  My total rms ranged from .77” to 1.06”. Needless to say, the fwhm of subs were higher than I like. Fwhm values started out around 4.2” and fell to 2.7” near the meridian, which was not bad, considering. I almost packed it in several times.  I am glad I didn’t.  I’ve never before known AP to be a forgiving endeavor. 
 

TOA 130 and ASI 1600.  About 5 hour of Ha. My goal will be to collect more Ha, hopefully during good seeing, and replace some of the high FWHM subs. Meanwhile, I can live with this Ha mono.