{
  "bibcode": "2021GCN.30163....1K",
  "body": "H. Kumar(IITB), V. Bhalerao(IITB), U. Stanzin (IAO), G. C. Anupama(IIA), S.\nBarway(IIA) report on behalf of the GIT team:\n\nWe observed GRB 210610A detected by Swift-BAT ( K. L. Page et al., GCN\n#30160, optical counterpart reported by R. Hosokawa et al., GCN #30161 and\nD. Xu et al., GCN #30162), with the 0.7m GROWTH-India Telescope (GIT). We\nobtained a 300-sec exposure in the r' filter. We clearly detected the\nafterglow in our image at R.A.= 13:37:07.64 and DEC.= 14:27:55.10. The\nphotometric results follow as:\n\n-------------------------------------------------------------------\n\n JD (start) | T_mid-T0(hrs) | Filter | Magnitude (AB) |\n\n-------------------------------------------------------------------\n\n2459376.178 | 1.22 | r' |  18.79+/- 0.05 |\n\n-------------------------------------------------------------------\n\nThe magnitudes are calibrated against PanSTARRS DR1 (Flewelling et al., 2018)\nand not corrected for Galactic extinction.\n\nThe GROWTH India Telescope (GIT) is a 70-cm telescope with a 0.7-degree\nfield of view, set up by the Indian Institute of Astrophysics and the\nIndian Institute of Technology Bombay with support from the Indo-US Science\nand Technology Forum (IUSSTF) and the Science and Engineering Research\nBoard (SERB) of the Department of Science and Technology (DST), Government\nof India (https://sites.google.com/view/growthindia/). It is located at the\nIndian Astronomical Observatory (Hanle), operated by the Indian Institute\nof Astrophysics (IIA).",
  "circularId": 30163,
  "createdOn": 1623344246000,
  "email": "harshkosli13@gmail.com",
  "subject": "GRB 210610A: GIT optical detection",
  "submitter": "Harsh Kumar at Indian Inst of Tech,Bombay  <harshkosli13@gmail.com>",
  "eventId": "GRB 210610A"
}