My favorite open cluster is definitely M6 - The Buttryfly Cluster. I haven't been able to image it for ages so last night - once the moon backed off a bit, was a good night to revisit it.
The Luminance I shot while the moon was still up and it was too washed out to even stack properly so I ditched those and made an artificial luminance just stacking the RGBs together.
This is only 45 minutes in 5 minute subs in RGB through Astrodon filers, a BabqQ and an SXVR_H16. The BabyQ is reduced down to a FL of 330mm so the field is nice and wide.
I hope others find this area as nice as I do.
Peter
