{
  "body": "Giovanni Calapai at Calapai Astronomical Observatory, Massa S. Giorgio, (Messina) Italy \nMember of: GRB/UAI Gamma Ray Burst Section of Unione Astrofili Italiani. \n\nReport:\n\nWe observed the field of GRB 251002A detected by SVOM/ECLAIRs (Saccardi et al., GCN 42060) with the 11 inches Schmidt-Cassegrain (Celestron 11) telescope F/D=6,3. \n  \nThe observations were started at 2025-10-02 22:27:43 UT (approximately 2.21 hours after burst) stacking a sets of unfiltered CCD image. The observations were carried out with sky disturbed by passing clouds, and Moon (illumination: 78%, distance: 57°).\n\nThe OT was detected at the following position:\n\nRA    (J2000.0)  00h 55m 37.91s   \nDecl. (J2000.0) -05° 34' 01.42\" \t \n\nPhotometry was obtained using nearby PanSTARRS stars as follows: \n\nObservation    Mid-Time    T-T0 (hr)      Exposure        Filter      Mag.     Mag. err.\n2025-10-02   23:08:13 UT    2.89           42x60s           CR       19.16     +/-0.08\n\nMagnitude was calibrated with the nearby PanSTARRS stars converted using Lupton (2005) equations. \nNo correction for galactic dust extinction was applied.\n\nOur observations are consistent with other already reported Palmerio et al. (GCN 42061); Turpin et al. (GCN 42062); Jelinek et al. (GCN 42063); Juliá-Maroto et al. (GCN 42064); Moskvitin et al. (GCN 42065); Perez-Garcia et al. (GCN 42066); Saccardi et al. (GCN 42076); Mandarakas et al. (GCN 42077); Cao et al. (42078); Schneider et al. (GCN 42080); Pankov et al. (GCN 42081); Leonini et al. (GCN 42082); Odeh et al. (GCN 42087); Wortley et al. (GCN 42091); Shilling (GCN 42099).\n\nThe message may be cited.",
  "submittedHow": "web",
  "subject": "GRB 251002A: Calapai Observatory, Massa S. Giorgio (Messina), optical observation.",
  "format": "text/plain",
  "bibcode": "2025GCN.42101....1C",
  "eventId": "GRB 251002A",
  "createdOn": 1759528114711,
  "submitter": "Giovanni Calapai at Calapai Astronomical Observatory, Massa S. Giorgio, Messina, Italy <giovannicalapai@tiscali.it>",
  "circularId": 42101
}