{
  "body": "D. B Malesani (DAWN/NBI and Radboud Univ.) and E. Le Floch (CEA) report on behalf of the Stargate collaboration:\n\nWe observed the field of GRB 240218A (Page et al., GCN 35742) using the ESO VLT UT3 with the X-shooter acquisition camera. A short sequence of imaging was secured in the r, g, and z bands. No afterglow is detected consistent with the position reported by XRT (https://www.swift.ac.uk/xrt_positions/), with the following upper limits:\n\nr band: r > 23.0 (AB) on Feb 18.124 UT (1.00 hr after the GRB);\nz band: z > 21.5 (AB) on Feb 18.127 UT (1.07 hr after the GRB).\n\nWe acknowledge excellent support from the VLT staff in Paranal, in particular Jonathan Smoker, Thomas Szeifert, and Rodrigo Romero.",
  "submittedHow": "web",
  "eventId": "GRB 240218A",
  "bibcode": "2024GCN.35743....1M",
  "subject": "GRB240218A: VLT/X-shooter upper limits",
  "circularId": 35743,
  "createdOn": 1708228159015,
  "submitter": "Daniele B. Malesani at IMAPP / Radboud University <d.malesani@astro.ru.nl>"
}