{
  "subject": "GRB 240805B Bassano Bresciano Observatory upper limit",
  "createdOn": 1722957626988,
  "circularId": 37076,
  "eventId": "GRB 240805B",
  "submitter": "Ulisse Quadri at Bassano Bresciano Observatory <osservatoriobassano@gmail.com>",
  "format": "text/plain",
  "submittedHow": "web",
  "body": "U.Quadri, L.Strabla and P.Madurini (Bassano Bresciano Astronomical Observatory),\n\nMembers of: \nAAVSO - American Association of Variable Star Observers.\nUAI - Unione Astrofili Italiani/GRB section.\nGAC - Gruppo Astrofili Cremonesi.\n\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 240805B detected by SWIFT (trigger num. 1246989)\nwith the robotic telescope of (IAU station 565) Bassano Bresciano Observatory, Italy.\n\nThe observations started 6.72 hour after the GRB trigger, At the end of twilight \nwith our Newton telescope D=450 mm F/D=4.5.\n\nWeather conditions were good.\n\nWe co-added 2 series of 50 exposures of 20 sec each.\n\nStart T0+      End T0+        Vlim\n6.72 hour     7.02 hour       21.2\n7.02 hour     7.35 hour       21.2\n\n\nWe did not found any optical counterpart in the error box of the XRTcandidate:\nM. A. Williams et al., GCN 37043; Z.P. Zhu et al., GCN 37050; V. Lipunov et al., GCN 37051;\nR. Strausbaugh et al., GCN 37052; A. Moskvitin et al., GCN 37055; Z. Maksut et al., GCN 37060;\nGuowang Du et al., GCN 37062; N. Pankov et al., GCN 37072.\n\nMagnitudes were estimated with the pan-STARRS cat. \nand are derived using Lupton (2005) equations.\nNot corrected for galactic dust extinction.\n\nReference:\nhttp://www.osservatoriobassano.org/GRB.asp\n\nThe ",
  "bibcode": "2024GCN.37076....1Q"
}