TITLE: GCN CIRCULAR NUMBER: 28388 SUBJECT: Correction to GCN 28387: GRB 200907B GROWTH-India optical upper limit DATE: 20/09/07 23:01:18 GMT FROM: Harsh Kumar at Indian Inst of Tech,Bombay H. Kumar (IITB), P. Dorje (IIA), V. Bhalerao(IITB), G. C. Anupama(IIA), S. Barway(IIA), report on behalf of the GROWTH-India collaboration: We apologize for the confusion caused in GRB name. GROWTH-India Telescope followed-up GRB 200907B, not GRB 200907A. Here is the corrected GCN:- We observed GRB 200907B reported by Swift-BAT (A.P. Beardmore et al., GCN #28384, P.A. Evans et al., GCN #28385) with 0.7m GROWTH-India telescope. The field was observed in the SDSS r filter starting at 2020-09-07T20:59:05.36 UT i.e. ~2.1 hrs after the event detection by Swift-BAT. We didn’t find any new source in stacked image of 7*500 sec exposure, within an uncertainty region of 2.2 arcsec around RA(J2000) = 05:56:06.93, Dec(J2000)= +06:54:22.8 (GCN 28385) up to r > 20.83 mag (5-sigma) (calibrated against PanSTARRs PS1 data release, Flewelling et al., 2018). The GROWTH India Telescope (GIT) is a 70-cm telescope with a 0.7-degree field of view, set up by the Indian Institute of Astrophysics and the Indian Institute of Technology Bombay with support from the Indo-US Science and Technology Forum (IUSSTF) and the Science and Engineering Research Board (SERB) of the Department of Science and Technology (DST), Government of India (https://sites.google.com/view/growthindia/). It is located at the Indian Astronomical Observatory (Hanle), operated by the Indian Institute of Astrophysics (IIA).