Index

Image CIF dictionary (imgCIF) version 3.00.04

_diffrn_detector_element.reference_center_fast

Definition:

   
    The value of _diffrn_detector_element.reference_center_fast is
    the fast index axis beam center position relative to the detector
    element face in the units specified in the data item
    '_diffrn_detector_element.reference_center_units' along the fast
    axis of the detector from the center of the first pixel to
    the point at which the Z-axis (which should be colinear with the
    beam) intersects the face of the detector, if in fact is does.
    At the time of the measurement all settings of the detector
    positioner should be at their reference settings.  If more than
    one reference setting has been used the value given whould be
    representive of the beam center as determined from the ensemble
    of settings.
    It is important to note that for measurements in millimetres,
    the sense of the axis is used, rather than the sign of the
    pixel-to-pixel increments.

Type: Real

Category:
diffrn_detector_element