Hi As far as I am aware beamline BL17U at Shanghai has what we in the Mosflm world call "reverse phi" (or in the XDS world you'd want to change the ROTATION AXIS vector).
There are often good reasons (to the engineers who have installed the equipment on the beamline) why the crystal rotation is in the opposite direction. Unfortunately no-one bothers to tell us developers, and we have to find out when we get a 'problem' dataset. I believe that James Holton has a pretty comprehensive list of the conventions used on the PX beamlines around the world.... On 12 May 2015, at 16:04, luzuok wrote: > > I not so familiar with data collection hardware! I still have a lot to learn. > This data set was collected from SSRF(Shanghai China). I don't know how they > rotate the spindle. > Can you provide me some reference material？ > > Best wishes! > > > > -- > 卢作焜 > 南开大学新生物站A202 > > > At 2015-05-12 22:41:24, "Kay Diederichs" <kay.diederi...@uni-konstanz.de> > wrote: > >You found it! > > > >XDS.INP needs > >ROTATION_AXIS=-1 0 0 > > > >with this setting, IDXREF indexes more than half of the reflections: > > REFINED VALUES OF DIFFRACTION PARAMETERS DERIVED FROM 10956 INDEXED SPOTS > > REFINED PARAMETERS: AXIS BEAM ORIENTATION CELL > > STANDARD DEVIATION OF SPOT POSITION (PIXELS) 0.60 > > STANDARD DEVIATION OF SPINDLE POSITION (DEGREES) 0.15 > > > >I assume this is beamline BL17B1 from the Taiwanese NSRRC synchrotron, > >right? Why oh why do they rotate the spindle this way? > > > >Kay > > > >On Tue, 12 May 2015 14:50:26 +0100, Huw Jenkins <h.t.jenk...@me.com> wrote: > > > >>On 12 May 2015, at 13:09, luzuok <luzuo...@126.com> wrote: > >> > >>> STANDARD DEVIATION OF SPINDLE POSITION (DEGREES) 11.13 > >> > >>Is the oscillation range and rotation axis direction correct in your > >>XDS.INP file? > >> > >> > >> > >>Huw > > Harry -- Dr Harry Powell, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge Biomedical Campus, Cambridge CB2 0QH Chairman of International Union of Crystallography Commission on Crystallographic Computing Chairman of European Crystallographic Association SIG9 (Crystallographic Computing)
