{
  "bibcode": "2017GCN.21642....1T",
  "body": "J. C. Tello, A. J. Castro-Tirado, R. Cunniffe, B.-B. Zhang, Y. Hu and A.\nGonz��lez-Rodr��guez (IAA-CSIC), I. Carrasco (Univ. de Malaga), D. Hiriart,\nW. H. Lee (UNAM), S. Jeong and I. H. Park (SKKU) and P. Kubanek (Inst. of\nPhysics, CZ) on behalf of a larger collaboration, report:\n\nThe 60 cm BOOTES-5/JGT at Observatorio Astron��mico Nacional in San Pedro\nM��rtir (M��xico) automatically responded in 7s (and 102s after the GRB onset) to\nthe Swift trigger of GRB 170822A (Melandri et al., GCN  21640).\nThe first unfiltered images (10 s exposures) were obtained at 09:13:38 UT\n(mid exposure). At the position of the Swift  X-ray afterglow, we detect\nthe likely optical afterglow at a magnitude of 18.3 (comparing to\nUSNO-B1.0) and fading by 0.8 mag at 09:14:00 UT. The preliminary position\nis RA (J2000) = 6:17:32.89, Dec (J2000) = +55:00:16.13 (+/- 0\".5). Further\nobservations are being carried out. Spectroscopic observations are\nencouraged.\n\nWe thank the staff at Observatorio Astron��mico Nacional in San Pedro M��rtir\nfor its excellent support.\n\n[GCN OPS NOTE(22aug17):  Per author's request, in the second line\nthe \"after the alert\" was changed to \"after the GRB onset\".]",
  "circularId": 21642,
  "createdOn": 1503400339000,
  "email": "jtello@iaa.es",
  "subject": "GRB 170822A:BOOTES-5/JGT optical afterglow candidate",
  "submitter": "Juan Carlos Tello at IAA-CSIC  <jtello@iaa.es>",
  "eventId": "GRB 170822A"
}