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GCN Circular 23742

GRB 190114C: Optical detection from HCT
2019-01-16T17:00:44Z (5 years ago)
Brajesh Kumar at Indian Inst. of Astrophysics <>
Brajesh Kumar (IIA), S. B. Pandey (ARIES), Avinash Singh (IIA), D. K. 
Sahu (IIA), G. C. Anupama (IIA) and Piyali Saha (IIA)

We observed the afterglow of GRB 190114C (Gropp et al., GCN 23688) with 
the 2-m Himalayan Chandra Telescope (HCT) located at the Indian 
Astronomical Observatory, Hanle, India. The observations started on 
2019-01-15 (14:51:32 UT) and two Bessell R-band images were obtained in 
a gap of about 1.3 hr. The exposure time was 200 sec for each frame. The 
OT candidate (Lipunov et al., GCN 23693; Selsing et al., GCN 23695; 
Bolmer et GCN 23702; D'Avanzo et al., GCN 23729; Kim et al., GCN 23732, 
23734; Kumar et al., GCN 23733) is clearly detected in our frames with 
the following magnitudes:

UT-mid                   JD               Mag
-------------------    ----------    --------------
2019-01-15 14:53:13    2458499.12    19.70 +/- 0.10
2019-01-15 16:13:33    2458499.18    19.81 +/- 0.09

These magnitudes were calibrated using the magnitudes of field stars 
from the USNO-B1.0 catalogue.

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