Using C9.25 and RGB filters with an IR filter as the lum channel.
The seeing was average, but later it was worse.

The seeing got steadily worse later, so I packed up, just as well I was frozen!
As an off topic aside, I went to work today and was going around a very gentle bend in the road at about 20mph and my BMW did a complete 180 degree turn on some black ice!. Luckily there were no other cars around at the time. :-0