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GCN Circular 16149

Subject

GRB 140419A, LOAO R-band observations

Date

2014-04-23T12:04:51Z (10 years ago)

From

Changsu Choi at Seoul Nat U <changsu@astro.snu.ac.kr>

Changsu Choi, Myungshin Im (CEOU/SNU), Hyun-Il Sung (KASI), and Yuji Urata
(NCU), on behalf of EAFON

We observed the field of GRB 140419A Swift GRB 140419A (Marshall et al., GCN
16118Not found
 
 
) in R-band using the 1-m telescope at Mt. Lemmon Optical Observatory
(LOAO) in Arizona, US

We obtained R-band images at two epochs on Apr. 19 and on Apr. 21. 
We marginally identify the afterglow in a stacked image for each night. 
The photometry is based on R1-mag of USNO-B1 stars in the observed field.

Details of Photometry are below:

date                          UT(mid time)         Filter           mag

2014/04/19                   07:30:51               R         18.64 +/-0.29 
2014/04/21                   03:39:38               R         21.43 +/-0.27

 


We thank the LOAO operator, Jae-Hyuk Yoon for performing the observation.