Well, rather than just throw away those 57 test frames, here is a pretty image cropped from the stack, less than half the 20D frame. Not bad for a f/1.9 OTA! Not bad at all :-) By the way, notice that the above is a mirror image of what is in the actual sky, since the OTA has a single mirror (the secondary is removed in Hyperstar configuration). Of course it's trivial to flip it, but I thought it better to leave it as is for completeness.