The DIP2000 detector has a raster size of 80 by 80 m and 2500 by 2500
pixels: the radius of the detector is 100 mm. If the spindle axis is coming
from the left (seen from the direction of the direct beam), one should use
a film rotation 90.0 in DENZO.
Let be the coordinates x beam y beam of the direct beam position
in millimeters on the image plate.
If there is no misorientation of the image plate ( cassette rotx roty rotz all equal to zero), then the
relations between the pixel coordinates written to the new x-file
and the STRATEGY laboratory axes
are given by:
The display program that is part of the DENZO package, XDISPLAYF, will display the image
in the coordinate system with the origin in the upper left corner
of the image and the
axis horizontal. The pixel coordinates
one gets when one clicks on an arbitrary position of the image are related to
the coordinates
according to:
STRATEGY can deal with misorientations of the detector, but does not correct for any radial offset or angular offset.