{
  "eventId": "GRB 230805B",
  "body": "Giulio Scarfì (Gruppo Astronomia Digitale - Iota Scorpii Observatory, La\nSpezia,\nItaly)\nin a large collaboration with:\nM.G. Dainotti (National Astronomical Observatory of Japan),\nY. Niino (Tokyo University, Institute of Astronomy),\nK. Kalinowski (Aarhus University, Department of Physics and Astronomy),\nB. De Simone (Universita' degli Studi Di Salerno)\nUnione Astrofili Italiani (UAI)\nreport:\n\nWe imaged the field of GRB 230805B detected by SWIFT(trigger 11:23:51 UT)\nwith the telescope GSO 16” of Iota Scorpii Observatory, La Spezia Italy\n\nMember of:\n\nUAI/SSV - Unione Astrofili Italiani/sezione stelle variabili, GRB section.\nGAD - Gruppo Astronomia Digitale.\n\nThe observations started 550 min after the GRB trigger, at the end of\ntwilight,\nwith a Ritchey Cretien D=406 mm with reducer F/D=6,15.\nWeather conditions were very good.\n\nWe co-added 6 exposures of 300 sec each.\n\n\nStart T0+      End T0+       R lim\n550 min        581 min         20\n\n\nWe did not found any optical counterpart in the error box of the XRT\ncandidate.\nPage et al. GCN 34339\n\nMagnitudes were estimated with the Gaia EDR3 cat. and\nare not corrected for galactic dust extinction. 20.0\n\nReference:\nhttps://www.parcodellestelle.com/\n\nThe message may be cited.\n\n",
  "circularId": 34377,
  "bibcode": "2023GCN.34377....1S",
  "submittedHow": "email-legacy",
  "createdOn": 1691610918219,
  "subject": "GRB 230805B: Iota Scorpii Observatory, La Spezia, Italy upper limit",
  "submitter": "GIULIO SCARFI at IOTA SCORPII OBSERVATORY <terziaria@gmail.com>"
}