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I believe that the problem referred to in Guido Hansen's and Enrico Malito's Emails is due to the direction of spindle rotation on BM14-C at APS being in the opposite direction to most beamlines. While I do not know this for a fact, the suggested solution, setting OMEGA to 180, would indeed be correct if the direction of rotation needs to be reversed. This would also fit the observation that indexing (on a single image) would work, but integrating a dataset would not. The alternative way of correcting for this is to include the REVERSEPHI keyword: DETECTOR ADSC REVERSEPHI This has the advantage that you do not need to know what OMEGA value to assign. This will work equally well for other detector types. It should be possible to simply give the keywords: DETECTOR REVERSEPHI and let MOSFLM work out the type of detector, but unfortunately this does not work (due to a bug), so the detector type does need to be given explicitly if the REVERSEPHI subkeyword is used. Andrew Leslie
