Must have been an exceptionally strong wind to cause that much vibration in your tripod and mount!
About force 6 with gusts to gale force.... "Exceptionally strong" here would be storm force but I'd not normally be out in such conditions.
Incidentally I did get useful data from the session - had to reject 7 out of 21 frames of this set due to excessive vibration and the residuals from the remaining frames were larger than usual (0.04 - 0.05 mags instead of 0.01 - 0.02); using two different comparison stars I found V Vul at 8.757 +/- 0.045 and 8.741 +/- 0.050 (V band) on 2009 August 29.02. The sets on epsilon Aurigae, gamma Cassiopeiae and rho Cassiopeiae were much more successful due to the shorter focal length employed for measuring bright objects.
Is anyone else following epsilon Aurigae?
