Purpose
Move the telescope a given number of pixels in the "y"
direction (parallel to detector COLUMNS) on the LRIS red detector.
Usage
pyr y
Arguments
y = offset in the direction parallel with CCD rows [pixels]
Exit values
0 = normal completion
1 = wrong number of arguments
2 = arguments not floating point
Example
1) Move the telescope -100 pixels in "y"
pyr -100