{
  "subject": "GRB080310, LBT and MDM photometry",
  "eventId": "GRB 080310",
  "bibcode": "2008GCN..7423....1W",
  "createdOn": 1205718758000,
  "circularId": 7423,
  "submitter": "Peter Garnavich at U of Notre Dame  <pgarnavi@nd.edu>",
  "email": "pgarnavi@nd.edu",
  "body": "G. Wegner (Dartmouth), P. Garnavich (Notre Dame), J. L. Prieto,\nand K. Z. Stanek (OSU) report:\n\nWe observed the position of GRB 080310 (Chornock et al. GCN 7381;\nCummings et al., GCN 7382) with the Large Binocular Telescope\n(LBC red and blue cameras) on March 13.40 (UT) and with the\nMDM 2.4-m Hiltner telescope (Retrocam) on March 14.39 (UT) through\nSloan-r filters.\n\nUsing stars calibrated by the SDSS, we estimate the following\nr-band magnitudes:\n\nage (days)  r mag   error   telescope\n3.04        22.45    0.05     LBT\n4.03        23.10    0.10     MDM\n\nThe photometry indicates that the afterglow has resumed a steep\ndecline. Including LBT photometry from March 12 (Garnavich et al.,\nGCN 7414), we estimate a power-law decline index of 2.1 between\n2 and 4 days after the burst.\n\nA plot of the light curve is available at:\nhttp://www.nd.edu/~pgarnavi/LBT/grb080310/LBT_lightcurve.jpg\n\nThe LBT is an international collaboration among institutions in the\nUnited States, Italy and Germany. The LBT Corporation partners are:\n*  The University of Arizona on behalf of the Arizona university system\n*  Istituto Nazionale di Astrofisica, Italy\n*  LBT Beteiligungsgesellschaft, Germany, representing the Max Planck\nSociety, the Astrophysical Institute Potsdam, and Heidelberg University\n*  The Ohio State University\n*  The Research Corporation, on behalf of The University of Notre Dame,\nUniversity of Minnesota and University of Virginia\n\nThis message may be cited."
}