4x640s shot with the modified D70 @ 1600 ISO with the C9.25 @ f/6.3 on the Vixen GP DX. I wasn't able to see this thing visually through the scope under a very dark sky.
I'll span some fishing lines in front of the corrector plate next time.
Wouldn't surpise me if there is a procedure in Iris to do that, maybe with the FFT/FFTD command combination? Probably Terry is capable to figure that one out.