{
  "version": 2,
  "body": "A. Nicuesa Guelbenzu (TLS Tautenburg), A. Rau (MPE Garching),\nand S. Klose (TLS Tautenburg) report:\n\nWe observed the field of ZTF21aaeyldq/AT2021any (Ho et al., GCN 29305)\nwith GROND mounted at the 2.2m MPG telescope at the ESO La Silla\nObservatory (Chile).\n\nObservations were performed during three epochs. The data were\ncalibrated against SDSS stars in the field.\n\nIn the g' band we measure the following AB magnitudes:\n\ndt/days         mag\n1.82415   23.39 +/- 0.11\n2.02104   23.47 +/- 0.06\n2.87115   23.84 +/- 0.09.\n\nFollowing Kann et al. (GCN 29321), here we assumed a GRB trigger time\n22 minutes before the discovery image (Ho et al., GCN 29305), i.e., at\nJD 2459230.77622.\n\nBased on these three epochs, we measure a decay slope of  0.94 +/-\n0.05, in agreement with Kann et al. (GCN 29321). There is no evidence\nfor an underlying host galaxy.\n\nThe transient was not detected in the NIR bands.\n\nWe thank Sam Kim (PUC) for performing the observations and all people,\nin particular P. Eigenthaler, R. Lechaume, A. Hempel, M. Hempel,\nT. Schweyer, A. González, involved in bringing GROND back online after\nits shutdown due to the Covid 19 pandemia in early 2020.",
  "editedBy": "Vidushi Sharma at NASA GSFC/UMBC <vidushi.sharma@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>",
  "format": "text/plain",
  "eventId": "ZTF21aaeyldq",
  "circularId": 29330,
  "editedOn": 1731009554009,
  "bibcode": "2021GCN.29330....1G",
  "createdOn": 1611074322000,
  "submitter": "Ana Nicuesa at TLS Tautenburg  <ana@tls-tautenburg.de>",
  "subject": "ZTF21aaeyldq: GROND observations",
  "email": "ana@tls-tautenburg.de"
}