{
  "bibcode": "1999GCN...415....1G",
  "body": "GRB 990907, optical observations\n--------------------------------------\n\nJavier Gorosabel, LAEFF-INTA (Madrid)\nAlberto Castro-Tirado, LAEFF-INTA (Madrid) and IAA-CSIC (Granada) \nIan Bond, Nick Rattembury and Phil Yock, University of Auckland \nPam Kilmartin, University of Canterbury\nT. Sumi (Japan)\nHernan Muriel, IATE (Cordoba)\nEnrico Costa, IAS (Frascati), on behalf of the BSAX team \n\nreport:\n\n\"We have obtained three 10-minute exposures of the BeppoSAX \nposition of GRB 990907 (Gandolfi et al. GCN 404, 405) with the \n0.61-m Mount John University Observatory (MJUO) telescope. \nThe images were taken on Sep 9.40 UT through a broad band filter \n(R + I bandpass). After a visual comparison with the Digital Sky \nSurvey, no sources varying by more than 0.3 mag were seen to the \nDSS-2 limit within the BSAX NFI error box (GCN 409) in agreement \nwith the negative results provided by Palazzi et al. (GCN 413).\"",
  "circularId": 415,
  "createdOn": 938336881000,
  "email": "ajct@laeff.esa.es",
  "subject": "GRB 990907 optical observations",
  "submitter": "Alberto Castro-Tirado at LAEFF-INTA  <ajct@laeff.esa.es>",
  "eventId": "GRB 990907"
}