{
  "bibcode": "2010GCN.10955....1G",
  "body": "G. Greco (INAF-Astronomical Observatory of BOLOGNA), C. Bartolini, A. Guarnieri, A. Piccioni\n(University of Bologna), G. Pizzichini (INAF/IASF-Bologna), F. Giovannelli (INAF/IASF-Roma)\nand A. Deblasi (INAF-Astronomical Observatory of BOLOGNA) report:\n\nWe observed the location of the  GRB GRB 100713A (Mereghetti et al. 2010, GCN 10951)\nwith the 152 cm Cassini Telescope located in Loiano under clear sky conditions\n(seeing approximately 2 arcsec).\n\nOne R-band observation (1x2400 sec) was done on 2010 July at 13.891 UT middle exposure time.\n\nComparison to the DSS (second epoch) reveals no new sources within the\nINTEGRAL/IBAS error circle or the Swift/XRT error circle (D'Elia et al. 2010, GCN 10952).\n\nOur 3-sigma limiting magnitude is R = 21 calibrated against the\nUSNO-B1.0 catalog stars and not corrected for the Galactic extinction.\n\nThis message can be cited.",
  "circularId": 10955,
  "createdOn": 1279064011000,
  "email": "giuseppe.greco2@studio.unibo.it",
  "subject": "GRB 100713A: optical upper limit",
  "submitter": "Giuseppe Greco at U Bologna  <giuseppe.greco2@studio.unibo.it>",
  "eventId": "GRB 100713A"
}