These were taken with my 70-200mm f/2.8 with 2x extender on the 7D body. They're mainly for me to use as a baseline when for when I get the 100-400mm f/4.5-5.6 that I just ordered. Hopefully with twice the image size on that lens, there should be more detail visible. At least you can make out the rings in these.
(The images have been scaled up by 3x in Photoshop to make them a little more usable.)
Category:Science and Technology