{
  "bibcode": "2001GCN...957....1C",
  "body": "GRB 010220, simultaneous optical observations by BOOTES-1\n---------------------------------------------------------\n\nAlberto Castro-Tirado, IAA-CSIC (Granada) and LAEFF-INTA (Madrid)\nJosé María Castro Cerón, ROA (San Fernando)\nTomás Mateo, CEDEA-INTA (Arenosillo)\nRené Hudec and Jan Soldán, ASU (Ondrejov)\nPetr Páta and Martin Bernas, CVUT-FEL (Prague)\nJosé Ángel Berná, Univ. de Alicante (Alicante)\nJavier Gorosabel, DSRI (Copenhagen)\nBenito de la Morena, CEDEA-INTA (Arenosillo)\nJosé Torres, DEC-INTA (Madrid)\non behalf of the BOOTES-1 Team\n\nreport:\n\n\"We have obtained about 30 images of a field containing the BSAX/WFC\nerror box for the 150 s long GRB 010220 (Piro et al. GCN 953, Manzo et al.\nGCN 956) with the ultra wide-field CCD of BOOTES-1 during the time interval\nFeb 20.93-Feb 20.97 UT (+/- 0.5 h around the GRB occurrence). The exposures,\nwith integration time of 60 s, cover a field of 40 x 28 deg� and reach a\nlimiting magnitude of about R = 10. None of the frames, including the one\nending at 22:51:15 UT, i.e. covering the first 8 s of the event, reveals an\noptical transient within the BSAX/WFC error circle. The next frame started\nat 22:52:15 UT and covers the time interval t_0 + 68 s to t_0 + 128 s.\nWe notice that the galactic nebula IC 1805 lies along the line of sight of\nthe GRB, at a galactic latitude of b = +1.38 deg, i.e. the extinction\nis high (A_v = 3.3 mag). Images and additional information can be found\nat http://www.LAEFF.ESA.Es/~ajct/GRBs/GRB010220/ .\n\nThis message can be cited.\"\n\n[GCN OPS NOTE(12Mar01): Two typos have been corrected.\nThe phrase \"GCN 957) with the\" has been changed to \"GCN 956) with the\".\nAnd \"Feb 21.93-Feb 21.97 UT\" has been changed to \"Feb 20.93-Feb 20.97 UT\".]",
  "eventId": "GRB 010220",
  "editedOn": 1730919554406,
  "editedBy": "Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>",
  "subject": "GRB 010220, simultaneous optical observations",
  "submitter": "Alberto Castro-Tirado at LAEFF-INTA  <ajct@laeff.esa.es>",
  "version": 2,
  "createdOn": 982796164000,
  "format": "text/plain",
  "circularId": 957,
  "email": "ajct@laeff.esa.es"
}