Purpose
With no arguments, show the current position angle of the LRIS
polarimeter waveplate [in degrees]. WIth 1 argument, change
the angle of the polarimeter waveplate to the specified value.
Usage
plangle [angle]
Arguments
angle = polarimeter waveplate position angle [degrees]
Output
The new/current waveplate position angle is printed on stdout
Restrictions
- "angle" must be a number
Exit values
0 = normal completion
1 = wrong number of arguments
Example