GCN Circular 24688
Subject
GRB 190530A: GWAC-F30 optical detection
Date
2019-05-31T01:42:46Z (5 years ago)
From
Liping Xin at NAOC, SVOM <xlp@nao.cas.cn>
L. P. Xin, G. W. Li, R. S. Zhang, T. C. Zheng, J. Wang, J. Y. Wei, Y. G. Yang,
E. W. Liang, X. G. Wang, H. L. Li, X. H. Han, X. M. Lu, L. Huang, H. B. Cai,
Y. L. Qiu, Y. Xu, Y. J. Xiao, Y. T. Zheng, C. Wu, J. S. Deng, D. W. Xu,
D. Turpin, W. L. Dong, P. P. Zhang and Jirong Mao report:
We began to observe GRB 190530A (Fermi-GBM team, GCN 24676 ) with GWAC-F30cm telescope
at 2019-05-30T12:48:46(UT), about 2.49 hour after the burst. GWAC-F30cm telescope is located at Xinglong
observatory, China. The field of view is about 1.9*1.9 sqr. deg. The coordinates we used to make the
observations was derived from Biltzinger et al., (GCN 24677). Due to the low elevation of this source
at Xinglong observatory, only seven R-band images were obtained. The exposure time for each frame
was 20 seconds.
The afterglow was detected by stacking all the images.
The coordinates is about RA=08:02:07.678 DEC=+35:28:47.14 J2000,
consistent with the position reported by Lipunov et al., GCN 24680.
The magnitude was R=15.1mag, calibrated by the nearby USNO R2 magnitudes.
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