/SKY xOffsetC yOffsetC
or
/SKY NO ! do not do sky calibration
Do a calibration subscan on sky.
Real :: xOffsetC ! x-offset
Real :: yOffsetC ! y-offset
NOTES: with the usage /SKY xOffsetC yOffsetC, both parameters are required,
but you can replace either parameter with * to leave it unchanged.
The system for the offsets is selected through the option /SYSTEM.