Purpose
Move the telescope a given number of pixels in the "x" and "y"
directions as defined by the LRIS red detector.
Usage
pxyr x y
Arguments
x = offset in the direction parallel with CCD rows [pixels]
y = offset in the direction parallel with CCD columns [pixels]
Exit values
0 = normal completion
1 = wrong number of arguments
2 = arguments not floating point
Example
1) Move the telescope 100 pixels in "x" and -200 in "y"
pxyr 100 -200