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    User name Yi Qiang

    Log entry time 08:53:38 on November 05, 2008

    Entry number 246845

    This entry is a followup to: 246817

    keyword=Orientation of Spot++ plot and BeO photo

    The axises of spot++ are defined in Hall system, which means the rb.****.x is to the left of the beam and rb.****.y is pointing vertically up. While on BeO window, the left is left, up is up. Therefore, to compare them, one of the plot needs to be rotated first.

    A copy of this log entry has been emailed to: jinhuang@jlab.org