docs: def gemini_writer(self, f_handle):
          """
          Write out a GEMINI formated OT ephemeris.  This is just a hack of SSD Horizons output.
          """
          f_handle.write(GEMINI_HEADER)
          # Date__(UT)__HR:MN Date_________JDUT     R.A.___(ICRF/J2000.0)___DEC dRA*cosD d(DEC)/dt
          #          1         2         3         4         5         6         7         8         9
          # 123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890
          # ' 2019-Jan-30 00:00     01 46 56.46 +10 28 54.9 01 47 56.17 +10 34 27.6    3.520
  
          for coordinate in self.coordinates:
              date = coordinate.obstime.datetime.strftime('%Y-%b-%d %H:%M')[:17]
              f_handle.write(" {:16} {:17.9f}    {:27} {:+8.5f} {:+8.5f}\n".format(date,
                                                                                   coordinate.obstime.jd,
                                                                                   coordinate.to_string('hmsdms',
                                                                                                        sep=' ',
                                                                                                        precision=4,
                                                                                                        pad=True)[:27],
                                                                                   float(coordinate.dra),
                                                                                   float(coordinate.ddec)),
                             )
          f_handle.write(GEMINI_FOOTER)
          return