Purpose
Given the (x,y) pixel coordinates of an LRIS target, move
target to the expected coordinates of the LRIS slit.
Usage
scentr x y
Arguments
x = column location of target [pixels]
y = row location of target [pixels]
Restrictions
The object may not end up exactly on the slit, because the
various LRIS longslits have slightly different centers.
Exit values
0 = normal completion
1 = wrong number of arguments
2 = arguments are not valid numbers
Example