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Is it just the Pilatus tile boundaries? > On 18 Feb 2016, at 17:55, Kevin Jude <[log in to unmask]> wrote: > > Dear all- > I am working with a data set that is 96% complete that I have assigned to space group C2 with cell dimensions 155.87 59.01 123.32, β=110.72°. I noticed a strange pattern of missing reflections in the data (the h0l slice in 2D and a 3D view approximately along 211 are in a dropbox at http://preview.tinyurl.com/zvqlex7). > > The missing data are in elliptical shells (for k=0, minor axes 10.9 Å, 5.45 Å, 3.64 Å, major axes 8.44 Å, 4.27 Å, and unmeasured). I can find other patterns, eg along the surface of a cylinder approximately around the (2,1,1) projection. The dataset was collected in a single wedge on a Pilatus detector. Does anyone have thoughts about what might give rise to these apparently systematically missing reflections? > > Best wishes > Kevin Jude