{
  "bibcode": "2011GCN.11974....1X",
  "body": "Dong Xu (WIS), Erkki Kankare, Tuomas Kangas (U. Turku), and Pall\nJakobsson (U. Iceland) report on behalf of a large collaboration:\n\nWe continued to observe the field of GRB 110422A (Mangano et al., GCN\n11957) at the Nordic Optical Telescope (NOT) equipped with ALFOSC. We\nobtained 2x360 s in the R filter with some clouds and a seeing ~0.9\".\n\nThe optical afterglow (Elunko et al., GCN 11958; Gres et al., GCN\n11960; Xu et al., GCN 11961) has decayed to R=22.5+/-0.2 mag with a\nmedian time 21:17:58.8 UT on April 25 (i.e., 77.6 hr after the BAT\ntrigger), calibrated with the #1651-0050630 star (R1=19.08) in the\nUSNO B1 catalog.",
  "circularId": 11974,
  "createdOn": 1303768009000,
  "email": "dong.xu@weizmann.ac.il",
  "subject": "GRB110422A: NOT optical follow-ups",
  "submitter": "Dong Xu at Weizmann Inst  <dong.xu@weizmann.ac.il>",
  "eventId": "GRB 110422A"
}