Posted 06 June 2012 - 08:34 AM
Thanks for the kind comments everyone. It was a bit of a balancing act, positioning the off-axis mask so that the sunlight didn't hit the primary mirror (and that any that did then missed the focuser). But as Venus won't be so close to the Sun for another 8 years it was worth the effort (on June 3rd, 2020, 19h UT it will be at 14' from the Sun's limb and 0.003% illuminated).
Mike, the image was submitted to Spaceweather.com, it's (burried) in the Transit gallery.
We also planned a post-transit observation, but at T+8.5h the sky here is still too milky and the immediate vicinity of the Sun far too bright for any reasonable chance of success.