#### Example 4

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. 7

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