*calc_bary, apply_bary* - Barycentric Time Corrections

Precise timing analysis requires the conversion of input QPOE event times from raw spacecraft clock units to UTC, and the correction of photon arrival times at the satellite to times at the solar system barycenter. The satellite ephemeris is a necessary input.

  xt> timcor
  ti> help using_timcor	             # gives general instructions for obtaining 
                                          # _ephem tables and using these tasks