{
  "bibcode": "2016GCN.19945....1Q",
  "body": "U.Quadri, L.Strabla and R.Girelli report:\n\nThe photometrical observations of the MASTER optical transient (GCN 19938, 19939, 19941) \nIs it a possible optical counterpart to the FERMI GBM trigger 496473540 (GRB160925A).\n\nThe optical transient has the ID MASTER OT J222817.90-145657.4.\n\nObservations made by the 250 mm F/4.8 Newton robotic telescope of \n(IAU station 565) Bassano Bresciano Observatory.\n\nObservations started on 2016-09-26 at 20h 04m UT and ended 2016-09-26 at 22h 32m UT\nExposures time of 60 sec each.\n\nReference star is: UCAC4 376-178184\nChk Star is: UCAC4 375-181914\n\n------------------------------------\n                       CV Mag.    \n     T (JD)\"         OT      Chk1 \n------------------------------------\n2457658.33643518   16.089   13.981\n2457658.33721064   15.947   13.953\n2457658.33797453   16.051   13.976\n2457658.33875000   16.019   13.962\n2457658.33952546   16.026   13.991\n2457658.34030092   15.986   13.963\n2457658.34107638   16.060   13.968\n2457658.34185185   16.065   13.969\n2457658.34262731   16.132   13.977\n2457658.34339120   16.060   13.991\n2457658.34439814   16.072   13.973\n2457658.34516203   15.988   13.983\n2457658.34592592   16.043   13.959\n2457658.34668981   16.069   13.981\n2457658.34745370   15.963   14.002\n2457658.34840277   16.083   13.969\n2457658.34916666   16.035   13.958\n2457658.34991898   16.068   13.963\n2457658.35069444   16.054   13.989\n2457658.35144675   15.944   13.975\n2457658.35239583   15.962   13.986\n2457658.35315972   16.040   14.013\n2457658.35392361   16.072   13.995\n2457658.35468749   15.956   13.976\n2457658.35543981   15.983   13.990\n2457658.35638888   15.992   13.980\n2457658.35715277   16.010   13.969\n2457658.35791666   15.996   13.990\n2457658.35868055   15.974   13.971\n2457658.35944444   15.992   13.989\n2457658.36039351   16.111   13.952\n2457658.36114583   16.004   14.008\n2457658.36190972   15.980   13.991\n2457658.36267361   15.939   13.978\n2457658.36343749   16.035   14.001\n2457658.36438657   15.972   13.985\n2457658.36515046   16.028   13.989\n2457658.36591435   16.055   13.989\n2457658.36667824   16.063   13.989\n2457658.36743055   16.015   13.987\n2457658.36837962   16.036   13.976\n2457658.36914351   15.971   13.997\n2457658.36990740   15.935   13.997\n2457658.37067129   16.016   13.963\n2457658.37143518   16.077   14.017\n2457658.37238425   15.977   13.968\n2457658.37314814   15.985   13.995\n2457658.37391203   15.905   13.959\n2457658.37466435   15.941   13.974\n2457658.37542824   15.998   13.982\n2457658.37637731   16.002   13.971\n2457658.37714120   15.934   13.970\n2457658.37790509   15.859   13.949\n2457658.37866898   15.994   13.950\n2457658.37942129   16.021   13.966\n2457658.38037037   16.015   13.978\n2457658.38113425   16.142   13.966\n2457658.38189814   15.944   14.019\n2457658.38266203   16.022   13.975\n2457658.38342592   16.174   13.992\n2457658.38436342   16.119   14.019\n2457658.38512731   16.109   13.959\n2457658.38589120   16.112   13.966\n2457658.38665509   15.908   13.963\n2457658.38740740   16.054   13.975\n2457658.38835648   16.030   13.987\n2457658.38912037   16.184   13.968\n2457658.39633101   16.020   14.001\n2457658.39709490   15.941   13.967\n2457658.39785879   16.160   13.989\n2457658.39863425   15.937   13.958\n2457658.39938657   16.069   13.992\n2457658.40033564   16.051   13.993\n2457658.40262731   16.062   13.963\n2457658.40908564   15.910   14.006\n2457658.40984953   16.049   13.979\n2457658.41061342   16.024   13.953\n2457658.41231481   16.074   13.989\n2457658.41307870   16.090   13.996\n2457658.41384259   15.901   13.986\n2457658.41460648   16.137   13.986\n2457658.41537037   16.033   13.994\n2457658.41631944   16.053   13.972\n2457658.41708333   16.132   13.979\n2457658.41783564   16.025   13.963\n2457658.41859953   16.029   13.968\n2457658.41936342   16.067   13.987\n2457658.42031250   16.031   13.965\n2457658.42107638   16.007   13.978\n2457658.42184027   16.031   13.950\n2457658.42260416   15.986   13.958\n2457658.42335648   16.055   13.939\n2457658.42430555   16.011   13.949\n2457658.42506944   15.992   13.983\n2457658.42583333   15.966   13.978\n2457658.42736111   16.004   13.967\n2457658.42829861   16.053   13.975\n2457658.42906250   16.132   13.953\n2457658.42982638   15.971   13.933\n2457658.43059027   16.006   13.955\n2457658.43135416   16.138   13.985\n2457658.43229166   15.972   13.962\n2457658.43305555   15.962   13.966\n2457658.43381944   16.082   13.962\n2457658.43458333   15.992   13.944\n2457658.43534722   15.873   13.947\n2457658.43628472   15.986   13.972\n2457658.43781250   16.153   13.968\n2457658.43857638   16.018   13.957\n\nMagnitudes were estimated with the UCAC4 cat. and \nare not corrected for galactic dust extinction.   \n\nReference: http://www.osservatoriobassano.org/GRB.asp\n\nThe message may be cited.",
  "circularId": 19945,
  "createdOn": 1474969467000,
  "email": "oabb@ulisse.bs.it",
  "subject": "GRB 160925A: Bassano Bresciano Photometry of MASTER optical transient",
  "submitter": "Ulisse Quadri at Bassano Bresciano Obs  <oabb@ulisse.bs.it>",
  "eventId": "GRB 160925A"
}