GCN Circular 28273

Anirban Dutta(IIA, Bengaluru), Brajesh Kumar(ARIES, Nainital), Avinash
Singh, G. C. 
Anupama, D. K. Sahu and Pramod Kumar (IIA, Bengaluru)

 We observed the field of GRB 200819A (Dichiara et
 al., GCN #28263;  Evans et al., GCN #28265) with the Himalaya Faint
Object
 Spectrograph and Camera  (HFOSC) mounted on the 2-m Himalayan Chandra
Telescope (IAO, Hanle, India). Multiple frames (each 300 sec) of the GRB
field in Bessell R and I bands were obtained with an average airmass of
1.3
and a seeing of  2''. Preliminary PSF photometry on the stacked
images was performed and calibrated against  USNO-B1 catalogue. We do
not
detect any OT within the enhanced XRT position (Belkin et al., GCN
#28266;  Jelinek et al., GCN #28267).

The estimated limiting magnitude is as under -
 Date          |       UT (mean)     | Filter |  Exp time x no. of
frames |  Upper limit (mag)
 2020-08-19        19:16:23          R                300 sec x 4       
               21.5
 2020-08-19        19:32:37          I                 300 sec X 4      
                20.3 

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