[ozalba (Duncan)]

A little late, perhaps, but what the heck.

I've never tried HDR imaging before, but it occurred to me that the partial phase of the eclipse would be a great application for the technique. I'd taken exposures of 1/2 at ISO-1000, 1/8 at 400 and 1/60 at 400, to cover the range of illumination present; if repeating this, I'd use more images, with no more than 2 stops between them.

The software didn't seem to like being asked to combine these three quite different images, so after cropping all three to the same FOV, I added a thin rectangle towards the edge of the frame to give the software something consistent to hang on to, and this seemed to work. (It's also possible that I hadn't got exactly the same cropping in my first attempt, which is what fooled the software, but being unfamiliar with the finer points of HDR, I can't be sure.)

Images taken with a Canon 40D, through an ancient and none-too-flash 6-inch Newtonian, undriven.