{
  "bibcode": "2014GCN.17240....1S",
  "body": "E. Sonbas (Adiyaman Univ.), T. Guver (Istanbul Univ.), E. Gogus (Sabanci\nUniv.), M. Parmaksizoglu, M. Dindar, H. Kirbiyik (TUG) report on behalf of\na larger collaboration\n\n\n We observed the field of Swift GRB 141225A (D'Avanzo et al., GCN#17229)\nwith the 0.60 meter robotic T60 telescope (Dindar et al. 2014; Bakirlitepe,\nTUBITAK National Observatory, Turkey), starting December, 25, 23:03:16.37\nUT (~ 129 second after the trigger). Observations were carried out with the\nR and B filters. The afterglow (Gorosabel et al., GCN 17230; Guidorzi et\nal., GCN 17231; Malesani et al., GCN 17232; Kuin & D'Avanzo, GCN 17233, Xu\net al. GCN 17236, Buckley et al. GCN 17237) is clearly detected in the R\nband images with an exposure time of 60 s.\n\n\nUsing USNO-B1 star USNO-B1 1237-0186662 (R.A.=138.789, Dec=+33.797) in the\nfield, the R magnitudes of the OT were estimated as follows;\n\n\nt-t0 (sec) exp.(s) filt mag err (+/-)\n\n~129 60 R 17.04 0.04\n\n~195 60 R 17.15 0.02\n\n\nFurther analysis are ongoing.\n\n\nWe are grateful to TUBITAK National Observatory for a partial support in\nusing T60 telescope with project number 539 and technical support.",
  "circularId": 17240,
  "createdOn": 1419610501000,
  "email": "edasonbas@gmail.com",
  "subject": "GRB 141225A: very early T60 observations",
  "submitter": "Eda Sonbas at NASA/GSFC  <edasonbas@gmail.com>",
  "eventId": "GRB 141225A"
}