{
  "bibcode": "2021GCN.29948....1F",
  "body": "S.Y. Fu (NAOC), Z.P. Zhu (NAOC, HUST), X. Liu, D. Xu (NAOC), X. Gao \n(Urumqi No.1 Senior High School), J.Z. Liu (XAO) report:\n\nWe observed the field of ZTF21aayokph (AT2021lfa) (Yao, Perley, & Ho, \nGCN 29938) using the NEXT-0.6m telescope located at Nanshan, Xinjiang, \nChina. We obtained 6x300 s frames in the Sloan r-band, starting at \n19:35:55 UT on 2021-05-05, i.e., ~ 38.02 hr after the ZTF detection in \nr-band.\n\nThe optical transient is not detected in our stacked image, down to a \nlimiting magnitude of r ~ 21.2, calibrated with the nearby PanSTARRS field.",
  "circularId": 29948,
  "createdOn": 1620287978000,
  "email": "dxu@nao.cas.cn",
  "subject": "ZTF21aayokph (AT2021lfa): Nanshan/NEXT optical upper limit",
  "submitter": "Dong Xu at NAOC/CAS  <dxu@nao.cas.cn>",
  "eventId": "ZTF21aayokph"
}