This format has been extensively used at the Weizmann Institute of Science, Rehovot, Israel. Their spindle axis lies in the horizontal plane (( film rotation 90.000).
The RAXIS-II CCD detector has a raster size of 105 
m and 1900 by 2048 pixels.
The sensitive area is considered to be squared with a size of 198 by 198 mm.
The program should be able to take into account a non-one scaling factor between
the horizontal and vertical spot coordinates ( y scale).