{
  "bibcode": "2025GCN.41587....1Z",
  "circularId": 41587,
  "submitter": "Weikang Zheng at UC Berkeley <weikang@berkeley.edu>",
  "subject": "EP-WXT trigger 01709200800 : KAIT optical observations",
  "submittedHow": "email",
  "body": "WeiKang Zheng (UCB), Xuhui Han (NAOC), Pinpin Zhang (NAOC) and\n\nAlexei V. Filippenko (UCB) report on behalf of the KAIT GRB team:\n\n\nThe 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at\n\nLick Observatory, observed the field of EP-WXT trigger 01709200800\n\n(Ni et al., GCN 41561) starting at 11:39, Aug 27 UT, about 17\n\nminutes after the trigger. A set of clear (roughly R) filter images\n\nwere obtained and lasted for ~70 minutes. We performed the photometry\n\non the suggested flare star LSPM J0220+3320 and saw some variation in\n\nthe magnitude, which faded from 11.92 +/- 0.03 mag to 11.99 +/- 0.03\n\nmag during our observation. The field was observed again on the\n\nfollowing night at ~21.98 hours and lasted for ~2 hours. We saw similar\n\nvariation in magnitude but in rising phase, suggesting it is a variable\n\nstar.\n",
  "createdOn": 1756448425884
}