

>> flagjumps

ok discard missing subarray...
! read and process astrometry
  --> check VPA rotation
  --> check chop
ok internal pixel ordering
ok  --> by subarray blocks...
! array geometry
  --> offsets and rotations (units!!!)
! bias values and calibration...
  --> 'biasref'
  --> bias data file format and management...
  --> 'calibrate=<flux>' option -> write to bias.dat...

+ custom console help
+ documentation
+ logging quantities  

==============================================================================


>> pointing native->equatorial; equatorial->native



* 'platescale' for conversion mm -> arcsec
* offset.R1,R2,T1,T2 to take values in mm (convert via platescale)
* pixelsize in mm (converted via platescale)
* Option to restrict analysis to subarrays. e.g. subarray={R,T,R1,R2,T1,T2}
  This is useful to determine subarray offsets / rotations...
* getLocalFixedIndices() with polarray misalignent (offset and rotation)
* log quantities and (also in READMEs).

