{
  "bibcode": "2022GCN.32803....1I",
  "body": "Myungshin Im, Gregory S.-H. Paek, Gu Lim, Hyeonho Choi, Sophia Kim (SNU),\nHyun-Il Sung (KASI), Yuji Urata (NCU) on behalf of a larger collaboration\n\nWe observed the field of GRB 221009A (Swift detection: Dichiara et al., GCN\n32632; Fermi GBM detection: Veres et al., GCN 32636), in J and K filters\nwith the KASINICS instrument on the 1.8 m telescope of the Bohyunsan\nOptical Astronomy Observatory (BOAO), Korea. The observation started at\n2022-10-18-11:34 (UT) or JD=2459870.98230324, taking a series of images for\nabout 1.25 hrs.\n\nWe identify the afterglow in the KASINICS images, with a rough photometry\nof K ~ 18.6 AB mag. Further observations and analysis are being carried out\nto obtain more data and refine the photometry.\n\nWe thank the staff of BOAO for carrying out the observation.",
  "circularId": 32803,
  "createdOn": 1666194731000,
  "email": "mim@astro.snu.ac.kr",
  "subject": "GRB 221009A: BOAO NIR detections",
  "submitter": "Myungshin Im at Seoul Nat U  <mim@astro.snu.ac.kr>",
  "eventId": "GRB 221009A"
}