ONOFF observations with WOBBLER SWITCHING are a special case, because the offsets for the subscans must be in system trueHorizon and their values must be selected according to the offsets of the WOBBLER SWITCHING! E. g.,
SWWOBBLER -33 +33 ONOFF 33 0 /REFERENCE -33 0 trueHorizon /SYSTEM trueHorizon
This can also be achieved simply by saying
SWWOBBLER -33 ONOFF
PAKO ``knows'' the special requirements for onoff wobbler switching, and will set the offset parameters for ONOFF accordingly, if SWWOBBLER has been previously selected. 3
In this special case, in order to map the source, the observer may
add offsets on the source and
using the command OFFSETS
with the system ``projection'', e.g.:
SWWOBBLER -33 OFFSETS 110 120 /SYSTEM projection ONOFF
NOTES. SOURCE does not clear offsets set with OFFSETS.
NOTES. If you are unsure about any of this, read the additional information in Section 6.1, or ask an astronomer whi is familiar with the NCS. For the time being, it is recommended not to try ``fancy'' combinations of offsets, which probably have not yet been fully tested and debugged.