{
  "circularId": 36960,
  "submitter": "Ulisse Quadri at Bassano Bresciano Observatory <osservatoriobassano@gmail.com>",
  "subject": "GRB 240727A Bassano Bresciano Observatory upper limit",
  "bibcode": "2024GCN.36960....1Q",
  "body": "U.Quadri, L.Strabla and P.Madurini (Bassano Bresciano Astronomical Observatory),\n\nMembers of: \nAAVSO - American Association of Variable Star Observers.\nUAI/SSV - Unione Astrofili Italiani/SSV-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 240727A detected by SWIFT(trigger 1245074)\nwith the robotic telescope of (IAU station 565) Bassano Bresciano \nObservatory, Italy.\n\nThe observations started 19.78 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 30 exposures of 60 sec each.\n\nStart T0+      End T0+    Vlim\n19.78 hour   20.86 hour    20\n\nWe did not found any optical counterpart in the error box of the XRTcandidate.\nParsotan et al.(GCN 36938), WeiKanget al.(GCN 36939), X. Liu et al.(GCN 36940).\n\nMagnitudes were estimated with the pan-STAR cat. and \nare not corrected for galactic dust extinction.\n\nReference:\nhttp://www.osservatoriobassano.org/GRB.asp\n\nThe message may be cited.\n",
  "eventId": "GRB 240727A",
  "submittedHow": "web",
  "format": "text/plain",
  "createdOn": 1722154145915
}