{
  "bibcode": "2021GCN.29308....1K",
  "body": "Amit Kumar (ARIES), Shashi B. Pandey (ARIES), Rahul Gupta (ARIES), Dimple\n(ARIES), Ankur Ghosh (ARIES), Amar Aryan (ARIES), Brajesh Kumar (ARIES),\nand Kuntal Misra (ARIES) report:\n\nWe observed the ZTF discovered fast-fading hostless transient ZTF21aaeyldq\n(Ho et al., GCN 29305) using the 4Kx4K CCD Imager (Pandey et al. 2018,\n2018BSRSL..87...42P) mounted at the axial port of the 3.6m Devasthal\nOptical Telescope of ARIES Nainital. The transient has been identified as a\nGRB afterglow at z = 2.514 by Postigo et al. GCN 29307.\n\nThe observations were started on 2021-01-16 at 22:15:12.980 UT (~15.258\nhours after the detection). We observed two images with an exposure time of\n300 seconds each in Bessel R and I bands. At the position reported by Ho et\nal., GCN 29305, we detect an uncatalogued source in both R and I bands.\n\nThe observed R-band magnitude is as follows:\n\nDate                UT start        T-T0 (hours)     Exp.     Filter  OT\n(mag)  Err\n------------------------------------------------------------------------------------------------\n\n2021-01-16     22:15:12.980   15.258           1*300       R       21.04\n  0.06\n\nThe quoted magnitude is calibrated with the nearby USNO-B1 stars and not\ncorrected for the Galactic and Host extinction in the direction of the\nburst.\n\n3.6m Devasthal Optical Telescope (DOT) is a recently commissioned facility\nin the Northern Himalayan region of India (long:79 41 04E, lat:29 21 40N,\nalt:2540m) owned and operated by the Aryabhatta Research Institute of\nObservational Sciences (ARIES), Nainital (https://www.aries.res.in).\nAuthors of this GCN circular thankfully acknowledge consistent support from\nthe technical staff members to run and maintain the 3.6m DOT.\n\nThis circular may be cited.",
  "circularId": 29308,
  "createdOn": 1610878408000,
  "email": "amitkundu515@gmail.com",
  "subject": "ZTF21aaeyldq: observations with the 3.6m Devasthal Optical Telescope",
  "submitter": "Amit Kumar at ARIES, India  <amitkundu515@gmail.com>",
  "eventId": "ZTF21aaeyldq"
}