{
  "bibcode": "2023GCN.34408....1L",
  "createdOn": 1691974713615,
  "body": "S. Leonini, M. Conti, P. Rosi, L.M. Tinjaca Ramirez (Montarrenti Observatory, Siena, Italy) report:\n\nWe observed the field of GRB 230812B (Lesage et al., GCN 34387; Scotton et al., GCN 34392; Page, GCN 34394; Zheng & Filippenko, GCN 34395; Lipunov et al., GCN 34396; Salgundi et al., GCN 34397; Ackley et al., GCN 34398; Xiong et al., GCN 34401; Casentini et al., GCN 34002; Frederiks et al., GCN 34403; Mao et al., GCN 34404; Odeh et al., GCN 34405; Moskvitin et al., GCN 34406) with the automatic 0.53m Ritchey-Chretien telescope at Montarrenti Observatory (Siena, Italy, IAU code C88).\n\nThe observations were started under good weather conditions at 2023-08-13 19:20:53 UT (approximately 24 hours after burst) stacking 50x30s R and I-band CCD images.\n\nThe OT was clearly detected at the following position:\n\nRA      (J2000.0)  16h 36m 31.47s +/-0.11 \nDecl. (J2000.0) +47° 51' 32.7\"      +/-0.14\n\nPreliminary photometry is obtained using nearby PanSTARRS stars as follows: \n\nMJD                  Filter   Mag.      Err.\n60170.32784    R       20.48  +/-0.07\n60170.32827    I        19.78  +/-0.10\n\nMagnitudes are converted using Lupton (2005) equations and are not corrected for galactic dust extinction.\n",
  "subject": "GRB 230812B: Montarrenti Observatory optical observations",
  "submittedHow": "web",
  "eventId": "GRB 230812B",
  "submitter": "Simone Leonini at Montarrenti Observatory (Siena, Italy) <s.leonini@iol.it>",
  "circularId": 34408
}