{
  "body": "T. Fatkhullin (SAO-RAS Nizhnij Arkhyz), A. de Ugarte Postigo (ESO \nSantiago), A. J. Castro-Tirado, J. Gorosabel and M. Jelínek (IAA-CSIC \nGranada), V. Sokolov (SAO-RAS), S. Guziy (Nikolaev State Univ.), A. \nPozanenko (IKI-RAS Moscow), E. Sonbas (Cukurova Univ.) and D. \nPérez-Ramírez (U. Leicester), on behalf of a larger collaboration, report:\n\n\"Continuing with our monitoring campaign of the field of the SGR \n0501+4516 (Holland et al. GCNC 8112, Barthelmy et al. GCNC 8113) we have \nused the 6.0m BTA telescope (equipped with SCORPIO) at the Special \nAstrophysical Observatory (SAO, Russia). A combination of exposures \nadding a total of 1530s in the I-band obtained at a mean epoch of August \n25.18468 UT shows a low S/N source consistent with the NIR object \nreported by Tanvir and Varrycatt (GCN 8126), with a magnitude of I = \n23.3 ± 0.4. Taking into account the nIR magnitude reported by Rea et al. \nat about the same epoch (GCNC 8159), we derive an apparent color index \n(I-Ks) = 4.1 ± 0.6, uncorrected for Galactic extinction in the line of \nsight to the source. Further observations are planned.\"\n\nThis message can be quoted.",
  "subject": "SGR 0501+4516: Detection of possible optical counterpart",
  "submitter": "Alberto Castro-Tirado at Inst.de Astro. de Andalucia  <ajct@iaa.es>",
  "createdOn": 1220010578000,
  "circularId": 8160,
  "bibcode": "2008GCN..8160....1F",
  "version": 2,
  "email": "ajct@iaa.es",
  "editedOn": 1731923010551,
  "format": "text/plain",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>",
  "eventId": "SGR 0501+4516"
}