{
  "createdOn": 1720620939086,
  "submitter": "Chao Wu at NAOC <wuchao.lamost@gmail.com>",
  "body": "Chao Wu (NAOC),  Xuhui Han (NAOC),  Zhe Kang (CHO), Liping Xin (NAOC),\nPinpin Zhang (NAOC)，Xiaomeng Lu (NAOC), Zhenwei Li (CHO)，Ruosong Zhang\n(NAOC)，Yujie Xiao(NAOC),  Yulei Qiu (NAOC)，You  Lv (CHO)，Jing\nWang(GXU/NAOC), and Jianyan Wei (NAOC) on behalf of SVOM GRB team\n\nWe observed the field of the fast X-ray transient EP240708a (Chen et al.,\nGCN 36838) on 18:00:53 UT, July, 9th, 2024, about 18.54 hours after the\nEinstein Probe (EP) mission trigger with C-GFT (Chinese Ground Follow-up\nTelescope in SVOM mission) in System Test Mode (STM). C-GFT is located at\nJilin (long.=126.33 deg, lat.= 43.8243778 deg), Changchun Observatory,\nNational Astronomical Observatories, CAS. It has FOV of 1.28 deg X 1.28 deg\nwith a 4k*4k CMOS detector mounted on the primary focus of\n1.2-meter-aperure telescope.\n\nA series of g ,r,and i band images were obtained. The exposure time was\n12*10 seconds for each band.\n\nNo optical afterglow was detected within the enhanced FXT error box (Hu et\nal., GCN 36840) down to a limit magnitude of 18.2,18.9 and 18.9 for g,r,and\ni band respectively, which was consistent with the report (Lai et al.,\n36839; ) at a similar time range.\n\nThe photometry was calibrated with nearby UCAC 4 catalogs.\n\nWe thank the observation assistant Guangsheng Zhang at Jilin observatory\nfor their excellent support.\n",
  "subject": "EP240708a: SVOM/C-GFT optical upper limit",
  "eventId": "EP240708a",
  "circularId": 36841,
  "submittedHow": "email-legacy",
  "bibcode": "2024GCN.36841....1W"
}