GCN Circular 34024
Nello Ruocco at Osservatorio Nastro Verde - Sorrento (Naples) - Italy in a large collaboration with: M.G. Dainotti (National Astronomical Observatory of Japan), Y. Niino (Tokyo University, Institute of Astronomy), K. Kalinowski (Aarhus University, Department of Physics and Astronomy), B. De Simone (Universita' degli Studi Di Salerno) report: We image the field of GRB 230618A detected by SWIFT (Page et al., GCN 33989) with telescope of Nastro Verde Observatory - Sorrento (Naples), Italy. Member of: AAVSO - American Association of Variable Star Observers. UAI/SSV - Unione Astrofili Italiani/sezione stelle variabili. AstroCampania Associazione Observations began at 21:02 UT on 2023/06/18, 19 hours after GRB's detection, with principal telescope SC 0.35 f/10 with focal reduced + CCD Sbig ST10 XME I took 24 image of 60 sec each. All images are unfiltered, calibrated with masterdark and masterflat,stacked with Tycho Tracker software We have not detected any clearly visible sources, up to 20.3th magnitude with clear sky at RA(J2000) = 13h 06m 24.75s Dec(J2000) = +03d 18' 09.3" on a field of view 23.3 x 15.7 arcmin Start End Rlim 21:02:25 UT 21:29:28 UT 20.3 Magnitudes were estimated with the Gaia DR2 cat. and are not corrected for galactic dust extinction. The message may be cited.