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Handling the derotator

If the subscan has no derotator table, the current pixel (obviously the unique pixel) is left centered on the current position (reference + position offset) computed in the section [*]. On the other hand, if a derotator table is present, MRTCAL will apply a per-pixel offset.

First of all, MRTCAL tries to guess the actual derotator angle on sky. The strategy is the following:


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Next: Computing the pixel coordinates Up: Offsets of multi-pixel receiver Previous: Offsets of multi-pixel receiver   Contents
Gildas manager 2023-06-01