Hi all, thanks a lot for all the responses! As anticipated, the solution is rather simple - the origin of the beam: denzo refines to: x=82.6 y=80.3 mosflm reads from header: x=80.0 y=84.0 - bad indexing etc mosflm works with: x=82.6 y=80.3 No swapping of x and y between denzo and mosflm in this case.
Cheers Jan On 8/22/07, Harry Powell <[EMAIL PROTECTED]> wrote: > Hi > > I'd guess from the input file that the beam centre may be defined in a > different reference frame to that which Mosflm expects in the image > header; other possibilities are that the distance, wavelength, or > something else (!) is wrong. Indexing is critically dependent on having > the beam centre, distance and wavelength all being pretty close to the > true values, though some indexing routines allow more latitude than > others. > > My understanding (IMWBW) is that other programs (such as XDS or HKL2000) > don't use the information in the image headers, and expect the parameters > to be supplied by the user. With Mosflm, we try to make the user's life > easier by trusting this information, especially from images collected at > synchrotron beamlines; sometimes this trust is not warranted, and the user > has to intervene! > > > processing data collected on APS beamline BM17 on a MAR165 detector > > causes unexpected troubles. Even though the crystals are > > well-diffracting and the spots are sharp and well-resolved, indexing > > only works with a certain selection of frames, the refinement the goes > > totally hairwire. Probalby just a parameter or so set wrong. My input > > file in the attachment. The last three lines do not make much of a > > difference. Any ideas? > > Thanks! > > > > Cheers > > Jan > > > > ************************ > > mosflm.in: > > detector marccd > > directory ../Images > > template Image_0###.img > > image 001 > > nullpix 1 > > separation 0.95 0.95 close > > !LIMITS XMIN 0 XMAX 165 YMIN 0 YMAX 165 xscan 2048 yscan 2048 > > !SIZE 2048 2048 > > !PIXEL 0.07934 > > ************************ > > > > Harry > -- > Dr Harry Powell, MRC Laboratory of Molecular Biology, MRC Centre, Hills > Road, Cambridge, CB2 2QH >
