Re: [ccp4bb] decrease of background with distance?

2009-11-27 Thread Ian Tickle
Hi Richard The only ones I'm aware of is this one: Acta Cryst. (1990). A46, 315-320, the one mentioned by Colin: Acta Cryst. (1991). B47, 960-968, and this review: Crystallography Reviews, (2003), 9, 229-277. Cheers -- Ian > -Original Message- > From: owner-ccp...@jiscmail.ac.uk > [m

Re: [ccp4bb] decrease of background with distance?

2009-11-27 Thread John R Helliwell
Dear Richard, A most interesting discussion has ensued! The balance of elastic versus inelastic scattering becomes the core point re benefit of moving back the detector as mentioned by Ian. It should be easier now ie with much more beamtime available to measure this as a function of wavelength. Co

[ccp4bb] ligand fitting, refinement?

2009-11-27 Thread ucbccka
In the past, individually, I have had issues with both SKETCHER and PRODRG. A work around that seemed to work for me was building the molecule in PRODRG, loading it into SKETCHER and then saving it, using the library file generated by Sketcher for refinement in REFMAC or whatever. Elbow in PHENIX

Re: [ccp4bb] phenix rigid body ref.

2009-11-27 Thread Pavel Afonine
Hi Tommi, Apologies, i know this is not phenix bb but since i am here (and not subscr. there) no need to apologize! You can just subscribe to it: http://www.phenix-online.org/mailman/listinfo/phenixbb how to control rigid body ref positions in phenix.refine, i am trying to do very low res ch

Re: [ccp4bb] decrease of background with distance?

2009-11-27 Thread Colin Nave
Dear John By inelastic I guess you mean the acoustic scattering? In case people are worried, the change in energy of the x-ray during this interaction is very small. Have you any views on the correct treatment for the halo corresponding to the acoustic scatter (or perhaps for the static case the