{
  "bibcode": "2014GCN.16096....1J",
  "body": "S. Jeong, S. R. Oates, J. C. Tello, J. Gorosabel, A. Sota and A. J.\nCastro-Tirado (IAA-CSIC), on behalf of a larger collaboration, report:\n\n\"Following the detection of GRB140408A by Swift (D'Elia et al., GCNC\n16082), we observed the field of GRB 140408A with the 1.5 m OSN telescope\nat Observatorio de Sierra Nevada in the R and I-bands. The observation\nstarted on Apr 9, 04:01:16 UT (i.e. ~0.62 d post burst). No optical\nafterglow is found at the position of the optical candidate reported by\nVarela et al. (GCNC 16089) in the median combined images (6 x 300s)\ndown to 21.7 mag (I band) and 22.5 mag (R band) (3-sigma upper limits,\nwith all magnitudes in Vega system and no correction for the Galaxy\nreddening).\"",
  "circularId": 16096,
  "createdOn": 1397154862000,
  "email": "soominjeong@gmail.com",
  "subject": "GRB 140408A: 1.5m OSN optical upper limit",
  "submitter": "Soomin Jeong at CSIC  <soominjeong@gmail.com>",
  "eventId": "GRB 140408A"
}