[vsnet-grb-info 7731] GRB 090426: YNAO-GMG observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  9285
SUBJECT: GRB 090426: YNAO-GMG observations 
DATE:    09/04/29 09:10:30 GMT
FROM:    Jirong Mao at Yunnan Obs  <jirongmao at ynao.ac.cn>

J. Mao (YNAO & INAF-OAB), G. Cha and J. Bai (YNAO) report on behalf of the GMG group:

We observed the optical counterpart of GRB 090426 (Cummings et al., GCN 9254) using 
one 2.4-m telescope located at Gao-Mei-GU (GMG) about 2 hours after the trigger and 
otained the following magnitudes: 

Start UT  Exposure Filter  Mag   Err
-------------------------------------
14:07:59  20 min     I    19.18  0.06
14:52:19  20 min     R    20.29  0.02   
15:49:27  20 min     V    20.97  0.04

and calibration was processed by a nearby SDSS star in the image. 

The telescope is charged by Yunnan Observatory (YNAO), Chinese Academy of Sciences.   

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