GCN Circular 27999

Anirban Dutta, Brajesh Kumar, Avinash Singh, G. C. Anupama, D. K. Sahu 
and B. S. Kiran (IIA, Bengaluru)

We observed the field of GRB 200613A (Fermi GBM team, GCN #27926; 
Bissaldi et al., GCN #27930; Ohno et al., GCN #27931; Evans, GCN #27932) 
with the Himalayan Faint Object Spectrograph and Camera (HFOSC) mounted 
on the 2-m Himalayan Chandra Telescope located at IAO, Hanle, India. 
Observations started on 2020-06-19 at 15:20:43 UT and we obtained 3 
frames, each of 300 sec in the Bessell R-band filter under moderate sky 
conditions.

The afterglow (Kann et al., GCN #27935; Pozanenko et al., GCN #27937; 
Zhu et al., GCN #27943; Marshall, GCN #27944; Liu et al., GCN #27949; 
Belkin et al., GCN #27958; GCN #27978; GCN #27983; Fu et al., GCN 
#27971; Moskvitin et al., GCN #27982; Izzo, GCN #27998) is clearly 
visible in the stacked image. We measure a preliminary magnitude of R = 
20.59 +/- 0.26 mag calibrated against the USNO-A2.0 catalogue stars. The 
host contamination has not been removed in the analysis.

We thank the observing staff at IAO and CREST for helping with the 
observations.