Well this doesn't compare to Warren's animation from today...but it's the biggest prom I have seen to date. And lots of other little stuff going on as well. I wish I would have tried my Barlow on the big prom...
LS50 DS + 178MM.
Surface: 2.1 ms, gain 194, best 25% of 1000 frames
Proms: 14.5 ms, gain 324, best 25% of 1000 frames
SharpCap + AS3 + RS6 + Gimp