{
  "submittedHow": "web",
  "body": "Nello Ruocco at Osservatorio Nastro Verde - Sorrento (Naples) - Italy\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: \nFollowing the Swift trigger no. 1195887 (GCN 34981 A. Melandri et al) from the Swift Burst Alert Telescope (BAT), we pointed at the coordinates RA(J2000)=19h 20m 45.96s: Dec(J2000)=52d 26' 17.9\" and started our observations with telescope of Nastro Verde Observatory - Sorrento (Naples), Italy.\nMember of: \nAAVSO - American Association of Variable Star Observers.\nUAI/SSV - Unione Astrofili Italiani/sezione stelle variabili.\nAstroCampania Associazione.\n\nThe observations started at 18:00 UT of 2023/11/11, after about 4 hours after the GRB trigger, with light cloud veils that left large spaces of clear sky, with principal telescope  SC 0.35 f/10 with focal reduced + CCD Sbig ST10 XME\nI took 13 unfiltered images of 120 sec and 26 unfiltered images of 60 sec . All images, calibrated with masterdark and masterflat have been measured with Thycho Tracker and Astrometrica software\nWe have detected a faint source at the enhanced position reported by Swift-XRT team (J.P. Osborne et al., GCN 34991 ) \nat following position\n\nRA (J2000.0)   19 20 45.12\nDec (J2000.0) +52 26 10.2  \n\nwith the following photometry and astrometry:\n\nGRB 23111 KC2023 11 11.82061 19 20 45.12 +52 26 10.2          20.4       C82\n\n\n\n\nMagnitudes were estimated with the GAIA DR2 cat. and are not corrected for galactic dust extinction.\n\nFurther observations are encouraged.\n\nThe message may be cited.",
  "bibcode": "2023GCN.34997....1R",
  "createdOn": 1699786997071,
  "submitter": "Nello Ruocco at Osservatorio Nastro Verde - Sorrento (Naples) - Italy - MPC Code C82 <osservatorionastroverde@gmail.com>",
  "subject": "GRB 231111A: Osservatorio Astronomico \"Nastro Verde\" optical observations with detection of an optical counterpart",
  "circularId": 34997,
  "eventId": "GRB 231111A"
}