{
  "bibcode": "2023GCN.34349....1Q",
  "eventId": "GRB 230805B",
  "subject": "GRB  230805B: Bassano Bresciano observatory upper limit",
  "body": "U.Quadri and  L.Strabla (Bassano Bresciano Astronomical Observatory),\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)\nreport: \n\nWe imaged the field of GRB 230805B detected by SWIFT(trigger 1183217)\nwith the robotic telescope of (IAU station 565) Bassano Bresciano \nObservatory, Italy. Member of: \nAAVSO - American Association of Variable Star Observers.\nUAI/SSV - Unione Astrofili Italiani/sezione stelle variabili.\nGAC - Gruppo Astrofili Cremonesi.\n\nThe observations started 8.74 hour after the GRB trigger, At the end of twilight \nwith our Newton telescope D=250 mm F/D=4.8.\n\nWeather conditions were good.\n\nWe co-added 4 series of 20 exposures of 60 sec each.\n\nStart T0+      End T0+     CR lim\n8.74 hour   10.00 hour      19.5\n\nCR is unfiltered with R zero point\n\nWe did not found any optical counterpart in the error box of the XRTcandidate.\nS. B. Cenko (GSFC) et al. GCN 34339\n\nMagnitudes were estimated with the USNO-B1.0 cat. and \nare not corrected for galactic dust extinction.\n\nReference:\nhttp://www.osservatoriobassano.org/GRB.asp\n\nThe message may be cited.",
  "createdOn": 1691305461875,
  "circularId": 34349,
  "submittedHow": "email-legacy",
  "submitter": "Ulisse Quadri at Bassano Bresciano Obs <oabb@ulisse.bs.it>"
}