{
  "bibcode": "2017GCN.20601....1I",
  "body": "Myungshin Im, Yongjung Kim, & Joonho Kim (CEOU/SNU)\n\nWe continued the observation of the GRB 170202A afterglow with the SQUEAN\ninstrument on the 2.1m Otto Struve telescope at the McDonald Observatory,\nTexas. The 2nd night observation started at 2017-02-04 09:45:52 UT,\n��� ���or\nabout 39.3 hours after the BAT alert.\n\nThe afterglow shows the following preliminary magnitude based on the\nphotometry calibration using SDSS stars in the vicinity.\n\n Filter    Mag (AB)  Mag_err   Exp.time  Start-time (UT)\n\nr             21.8         0.15      180s x 10    09:45:52���",
  "circularId": 20601,
  "createdOn": 1486206937000,
  "email": "mim@astro.snu.ac.kr",
  "subject": "GRB 170202A: SQUEAN Observation (2nd night)",
  "submitter": "Myungshin Im at Seoul Nat U  <mim@astro.snu.ac.kr>",
  "eventId": "GRB 170202A"
}