{
  "bibcode": "2019GCN.24016....1N",
  "body": "M. Niwano,�� K. L. Murata, R. Itoh, Y. Tachibana,\nK. Morita, K. Iida, K. Shiraishi, R. Adachi, M. Oeda,�� Y. Yatsu,\nand N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration\n\nWe searched for the optical counterpart of\nGRB 190326A (M. H. Siegel et al., GCN #24009)\nwith optical three color (g', Rc, and Ic) cameras attached to the \nMITSuME 50 cm\n\nreflector in the Okayama��Astrophysical Observatory, Japan.\n\nThe observation started at 19:01:19 UT which corresponds to 41151 \nsec��since the trigger.\nWe did not find any new point source within the Swift BAT error circle\n(M. H. Siegel et al., GCN #24009) in all three bands.\n\nThe obtained 5 sigma upper limits of the optical counterpart are \nsummarize below:\n\nT0+[sec]������ MID-UT���������� T-EXP[sec]������ g'������������ Rc�������������� Ic\n------------------------------------------------------------------------------------------------------- \n\n41151�� 19:33:27�� 600���� >16.8�������� >16.8�������� >16.2\n------------------------------------------------------------------------------------------------------- \n\n\nT0+ : Elapsed time after the burst\nT-EXP: Total Exposure time\nWe used UCAC-4 catalog for flux calibration.",
  "circularId": 24016,
  "createdOn": 1553669538000,
  "email": "niwano@hp.phys.titech.ac.jp",
  "subject": "GRB 190326A: MITSuME Okayama optical upper limits",
  "submitter": "Masafumi Niwano at Tokyo Institute of Tech  <niwano@hp.phys.titech.ac.jp>",
  "eventId": "GRB 190326A"
}