{
  "circularId": 33939,
  "eventId": "ZTF23aamxeqf",
  "subject": "ZTF23aamxeqf/AT2023jxk: 1.3m DFOT Optical upper limit",
  "submitter": "Amit Kumar Ror at ARIES <mitturor77894@gmail.com>",
  "bibcode": "2023GCN.33939....1R",
  "createdOn": 1686285936463,
  "body": "Amit K. Ror, B. Kumar, Rahul Gupta, S. B. Pandey, A. Aryan, A. Ghosh, and\nK. Misra (ARIES) report:\n\n\nWe observed the field of fast optical transient ZTF23aamxeqf/AT2023jxk\ndiscovered by Zwicky Transient Facility (ZTF) and GROWTH India Telescope\n(GIT) with the 1.3m Devasthal Fast Optical Telescope (DFOT) located at the\nDevasthal observatory of Aryabhatta Research Institute of Observational\nSciences (ARIES), India.  The observations were started on 2023-06-07 at\n19:03:55 UT, i.e., ~ 2.59 days after the ZTF trigger. We have taken\nmultiple frames having an exposure time of 300s in the R filter. We stacked\nthe images after the alignment. We did not detect the optical afterglow\ncandidate reported previously by Vail et al. (2023), GCN 33934, in our\nstacked image. We obtain the following 3-sigma upper limit in the stacked\nimage.\n\n\nDate Start_UT T_start-T0 (days)   Filter   Exp time (s)   Limiting magnitude\n\n====================================================\n\n2023-06-07 19:03:55   ~2.59          R    300*24      > 20.8\n\n\nThe magnitude is not corrected for the Galactic extinction in the direction\nof the burst. Photometric calibration is performed using the standard stars\nfrom the USNO-B1.0 catalog. This circular may be cited.\n"
}