{
  "bibcode": "2015GCN.17756....1M",
  "body": "D. Malesani (DARK/NBI), D. Xu (NAOC/CAS), D. J. Watson (DARK/NBI), and \nP. Blay (IAC/NOT), report on behalf of a larger collaboration:\n\nWe observed the optical counterpart (Perley, GCN 17745; Marshall & \nBeardmore, GCN 17751) of the short GRB 150424A (Beardmore et al., GCN \nCirc. 17743), using the Nordic Optical Telescope equipped with the \nAlFOSC camera. The first 300-s R-band exposure was taken starting at \n20:57 UT (13.2 hr after the GRB)\n\nWe clearly detect the counterpart with a magnitude R = 20.67 +- 0.06 \n(assuming R = 16.27 for the USNO star at RA = 10:09:11.09, Dec = \n-26:36:58.4).\n\nThis magnitude is just slightly fainter than the value reported by \nPerley (GCN 17745) 1.6 hr after the trigger, indicating a very slow \ndecay - consistent with the UVOT report. The brightness of the afterglow \nis unprecedented for a short GRB this late after the GRB. Such a \nbehaviour is unusual and we encourage further observations.",
  "circularId": 17756,
  "createdOn": 1429916933000,
  "email": "malesani@dark-cosmology.dk",
  "subject": "GRB 150424A: NOT optical observations",
  "submitter": "Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst  <malesani@dark-cosmology.dk>",
  "eventId": "GRB 150424A"
}