TITLE: GCN CIRCULAR NUMBER: 24748 SUBJECT: GRB190604B: GROWTH-India telescope followup - no optical counterpart found DATE: 19/06/04 21:31:40 GMT FROM: Harsh Kumar at Indian Inst of Tech,Bombay M. Khandagale, H. Kumar, V. Karambelkar, V. Bhalerao(IITB), G. C. Anupama, J. Stanzin (IIA) report on behalf of the GROWTH collaboration: We observed the field of GRB190604B reported by K. L. Page et al., GCN 24742 at 2019-06-04 and 20:03:18.675 UT with the 0.7m GROWTH-India telescope. We took 2 exposures of 600 seconds each in r filter. No source was found within an uncertainty region of 3.6 arcseconds to RA(J2000) = 19h 50m 09.13s, Dec(J2000) = -32d 58' 35.9" (K. L. Page et al.,GCN 24742). We obtained the following upper limits: ------------------------------------------------------------------ JD(Start)| Exposure(sec) | Filter | lim_Mag | ------------------------------------------------------------------ 2458639.335 | 600 | r | 20.33| 2458639.342 | 600 | r | 19.93| ------------------------------------------------------------------ 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).