MRTCAL splits the antenna extension in the antenna slow and antenna fast descriptions. Antenna slow:
XTENSION (C) = BINTABLE / binary table extension BITPIX (I4) = 8 / 8-bit bytes NAXIS (I4) = 2 / 2-dimensional binary table NAXIS1 (I4) = 6228 / width of table in bytes NAXIS2 (I4) = 8 / number of rows in table PCOUNT (I4) = 0 / size of special data area GCOUNT (I4) = 1 / one data group (required keyword) TFIELDS (I4) = 19 / number of fields in each row EXTNAME (C) = IMBF-antenna / name of this binary table extension SCANNUM (I4) = 138 / Scan number OBSNUM (I4) = 1 / Observation number DATE-OBS (C) = 2017-03-29T10:54:54.41 / observation start in TIMESYS system MJD_BEG (R8) = 57841.4547964699 / Duplicate of DATE-OBS (memory only) DATE-END (C) = 2017-03-29T10:54:58.42 / observation end in TIMESYS system MJD_END (R8) = 57841.4548428241 / Duplicate of DATE-END (memory only) OBSTYPE (C) = calibrate / Observation type SUBSTYPE (C) = calSky / Subscan type SUBSTIME (R8) = 5.00000000000000 / [s] Subscan time SYSTEMOF (C) = projection / System for offsets SUBSXOFF (R8) = -2.908882000000000E-03 / [rad] Subscan x offset SUBSYOFF (R8) = 0.00000000000000 / [rad] Subscan y offset SETYPE01 (C) = / Segment type SETIME01 (R8) = 0.00000000000000 / [s] Segment time SEXOFF01 (R8) = 0.00000000000000 / [rad] Segment x offset SEYOFF01 (R8) = 0.00000000000000 / [rad] Segment y offset SEXSTA01 (R8) = 0.00000000000000 / [rad] Segment x start SEYSTA01 (R8) = 0.00000000000000 / [rad] Segment y start SEXEND01 (R8) = 0.00000000000000 / [rad] Segment x end SEYEND01 (R8) = 0.00000000000000 / [rad] Segment y end SESPES01 (R8) = 0.00000000000000 / [rad/s] Speed at start of segment SESPEE01 (R8) = 0.00000000000000 / [rad/s] Speed at end of segment DOPPLERC (R8) = 0.999881490337000 / Doppler correction factor OBSVELRF (R8) = 28.8325140071000 / [km/s] Observer velocity in rest frame MJD (R8) = 57841.4547916667 ... 57841.4548726852 / [Julian day] MJD at integration start LST (R8) = 83367.2657212536 ... 83374.2848861940 / [s] Local apparent sidereal time (integration s LONGOFF (R8) = -2.908881986513734E-03 ... -2.908881986513734E/ [rad] long. offset from source in user native f LATOFF (R8) = 0.00000000000000 ... 0.00000000000000 / [rad] lat. offset from source in user native fr CAZIMUTH (R8) = 1.31577241984522 ... 1.31600523032287 / [rad] Commanded Azimuth CELEVATI (R8) = 0.630288975389516 ... 0.630683181202881 / [rad] Commanded Elevation TRACEFLA (I4) = 0 ... 0 / Trace Flag
Antenna fast:
XTENSION (C) = BINTABLE / binary table extension BITPIX (I4) = 8 / 8-bit bytes NAXIS (I4) = 2 / 2-dimensional binary table NAXIS1 (I4) = 6228 / width of table in bytes NAXIS2 (I4) = 8 / number of rows in table PCOUNT (I4) = 0 / size of special data area GCOUNT (I4) = 1 / one data group (required keyword) TFIELDS (I4) = 19 / number of fields in each row EXTNAME (C) = IMBF-antenna / name of this binary table extension DATE-OBS (C) = 2017-03-29T10:54:54.41 / observation start in TIMESYS system MJD_BEG (R8) = 57841.4547964699 / Duplicate of DATE-OBS (memory only) DATE-END (C) = 2017-03-29T10:54:58.42 / observation end in TIMESYS system MJD_END (R8) = 57841.4548428241 / Duplicate of DATE-END (memory only) TRACERAT (I4) = 128 / No. of fast traces per slow trace MJDFAST (R8) = 57841.4547569444 ... 57841.4548494466 / [Julian day] MJD at integration start AZIMUTH (R8) = 1.31550400027680 ... 1.31576626838095 / [rad] Encoder Azimuth ELEVATIO (R8) = 0.631753369365499 ... 0.632199246447845 / [rad] Encoder Elevation