{
  "bibcode": "2020GCN.28685....1L",
  "body": "T. Laskar (University of Bath), K. Paterson, J. Rastinejad, C. D.\nKilpatrick, and W. Fong (Northwestern) report on behalf of a larger\ncollaboration:\n\n\"We observed Swift GRB 201014A (Ambrosi et al., GCN 28623) with Binospec on\nthe MMT 6.5-meter telescope at Mount Hopkins, Arizona. We obtained\n10x120-sec imaging in the i' and z' bands beginning on 2020 October 17 at\n08:55:10 UT and 09:31:56 UT, respectively.\n\nWithin the XRT position (D'Elia et al., GCN 28626; Perri et al., GCN\n28638), we detect the previously reported optical afterglow (Pozanenko et\nal., GCN 28628; Zhu et al., GCN 28655). Calibrated to SDSS, we measure i' =\n23.3 +/- 0.1 mag and z' = 22.8 +/- 0.1 mag at a mid-time of 2.45 days since\nthe burst. Magnitudes are in the AB system and are not corrected for\nGalactic extinction.\n\nWe thank Skyler Self and Ben Weiner at the MMT for the rapid scheduling and\nexecution of these observations.''",
  "circularId": 28685,
  "createdOn": 1603117058000,
  "email": "tanmoylaskar@gmail.com",
  "subject": "GRB 201014A: MMT afterglow detection",
  "submitter": "Tanmoy Laskar at U of Bath  <tanmoylaskar@gmail.com>",
  "eventId": "GRB 201014A"
}