Thanks for all the nice comments everyone, I’ll pass them on to the “gods of seeing”...
I was using a full aperture solar filter made from Baader astro solar film, the photographic density type. In addition, for the 1st time, I also used a 1 ¼” Baader Solar Continuum Filter (BSCF) fitted to the DMK31, ahead of the standard IR block filter.
With just the IR cut filter, the DMK31 settings were 1/2000 sec with a Gain of around 295. With the addition of the BSCF, these changed to around 1/120 sec with a gain of around 450, quite a significant loss of light.
As the seeing was quite variable, I was pausing/re-starting the 2500 frame avi’s whilst eyeballing the screen and I think that the BSCF definitely revealed finer detail and seemed to cut through the seeing, although this effect was quite subtle – you still very good seeing to harvest this level of detail.
Cheers
Dennis