{
  "format": "text/plain",
  "eventId": "GRB 240824B",
  "submitter": "Daniele B. Malesani at IMAPP / Radboud University <d.malesani@astro.ru.nl>",
  "bibcode": "2024GCN.37281....1M",
  "body": "D. B. Malesani (DAWN/NBI and Radboud Univ.), A. Martin-Carrillo (UCD), J. Terwel (NOT and TCD), report on behalf of a larger collaboration:\n\nWe observed the field of GRB 240824B (Fermi GBM team, GCN 37260; Nakajima et al., GCN 37261; DeLaunay et al., GCN 37267) using the Nordic Optical Telescope (NOT) located in the Canary Islands. Observations consisted of three r-band exposures for a total of 900 s, with a mid time 2024 Aug 25.053 UT (12.1 hr after the trigger). The seeing was unfortunately poor, with a delivered PSF of ~2\".\n\nIn the stack of our images, no source is detected at a location consistent with the candidate X-ray afterglow error circle (Kennea et al., GCN 37270), down to a 3-sigma limiting magnitude r = 22 (AB, calibrated against nearby sources from the Pan-STARRS catalog).\n",
  "circularId": 37281,
  "createdOn": 1724611346233,
  "subject": "GRB 240824B: NOT optical upper limit",
  "submittedHow": "web"
}