I did a quick test last month, but found it a challenge to focus precisely. Nevertheless i did get a couple of rough test shots before it clouded in that evening.
Wasn't sure if the odd star shapes at the bottom of the image is due to the lens, or my modded DSLR which could have some residual sensor tilt from the modification process. i have another unmodded 400D which I am planning to use to confirm this.
This is a 30sec exposure (full frame reduced by 50%, top @ 100%, centre @ 100%, bottom @ 100%)
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