{
  "bibcode": "2018GCN.22536....1D",
  "body": "P. D'Avanzo, A. Melandri, S. Covino, D. Fugazza (INAF/OAB) report on behalf of the REM team:\n\nWe observed the field of the GRB 180325A (Troja et al., GCN 22532) with the 60-cm robotic telescope REM located at the La Silla Observatory (Chile).  \nThe observations started on 25-03-2018 at 01:53:52 UT, 50s after the burst, and were carried in the g, r, i, z, J, H and K bands.\n\nA preliminary analysis shows that the optical counterpart (Troja et al., GCN 22532; Guidorzi et al. GCN 22534; Heintz et al. GCN 22535) is well detected \nand at a mid time of 123 seconds after the burst it was:\n\nr = 17.2 +/- 0.2 (AB)\nH = 12.7 +/- 0.1 (Vega)\n\nMagnitudes are calibrated against the SDSS (optical) and 2MASS (NIR) catalogues.",
  "circularId": 22536,
  "createdOn": 1521949818000,
  "email": "paolo.davanzo@brera.inaf.it",
  "subject": "GRB 180325A: prompt REM optical/NIR detection",
  "submitter": "Paolo D'Avanzo at INAF-OAB  <paolo.davanzo@brera.inaf.it>",
  "eventId": "GRB 180325A"
}