[vsnet-grb-info 11689] GRB 120320A: BOOTES-4 optical upper limit

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  13080
SUBJECT: GRB 120320A: BOOTES-4 optical upper limit
DATE:    12/03/21 01:05:22 GMT
FROM:    Alberto Castro-Tirado at Inst.de Astro. de Andalucia  <ajct at iaa.es>

J.C. Tello (IAA-CSIC), P. Kubanek (IP AS CR & IAA-CSIC), J. Gorosabel
(IAA-CSIC), A.J. Castro-Tirado (IAA-CSIC), S. Guziy (Nikolaev St. Univ.),
Yufeng Fan, Xiaohong Zhao, Jiming Bai (Yunnan National Astronomical
Observatory) and Chenzhou Cui (Beinjing National Astronomical
Observatory), report on behalf of a larger collaboration:

"We observed the field of GRB 120320A (Markwardt et al., GCNC 13071),
detected by Swift/BAT, with the 0.6m BOOTES-4/MET telescope at the Lijiang
Astronomical Observatory, China. Unfiltered images were obtained
starting 13:48:44UT at high airmass (2h12m after the burst, limited by the
local horizon). The resulting limiting magnitude (63 x 180s) is 16.3 when
calibrated with the R1Mag value of USNO-B1.0 catalogue stars."

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