aspecting (version 1.3)

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This routine calculates the aspect point from the attitude file(s). The aspect point is a nominal spacecraft pointing to which sky coordinate images will be registered. The ANG_DIST column in the filter files gives the deviation of the spacecraft pointing from the aspect point.

First all the attitude files are merged. Then the merged attitude file is read with the attitude FTOOL. Finally, the output of attitude is interpreted by the aspect STOOL. aspect bins the the attitude points into .01 degree bins. It then finds the most populous group of four adjacent bins and calculates the mean pointing among those points.

FTOOLS called:

  1. attitude
  2. fmerge
  3. setup_parfile
STOOLS called:
  1. aspect
  2. checkatt
  3. ecl2gal
  4. euler2radec
  5. fixatt
Utilities called:
  1. add_parameter
  2. check_order
  3. exception
  4. file_to_log
  5. ftool_test
  6. log_entry
  7. milestone
  8. read_parfile
  9. setup_parfile
  10. stool_test