Keywords: pako

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#### 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. 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.

Next: Receiver Setup and Calibration Up: Coordinate Systems, Map Projections, Previous: Example 3 Contents Index