Compensating like this is of course not the best (go and recollect!) but still way better than unusable data in the meantime. In the case Sergei originally described it would at least indicate what the problem may be. Sergei did not say which detector was used for the data collection so we don't know if it was a Pilatus or a CCD. Maybe Sergei can fill us in on the details?
>The data that Sergei described were collected by yours truly at beamline ID14-2 of the ESRF, so detector is a Quantum CCD. I collected data for another protein crystal a few hours before with 0.5 degree oscillations - no abnormal statistics here, so I don't suspect cryo or loop instabilities are the underlying cause as suggested before. The choice of 0.1 degree oscillations appears somewhat unfortunate in retrospect, but this is what several programs (Best/mosflm/DNA) suggested to reduce overlaps. The data were collected for the only crystal that showed decent diffraction to ~3A out of more than 30-40 screened. -Chris