[AAVSO-HEN] GRB 090529: CrAO optical upper limit

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TITLE:   GCN CIRCULAR
NUMBER:  9612
SUBJECT: GRB 090529: CrAO optical upper limit
DATE:    09/07/03 22:27:56 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

D. Shakhovkoy, V. Rumyantsev (CrAO), A. Pozanenko (IKI)  report on behalf of 
larger GRB  follow-up collaboration:

We observed the field of the Swift GRB 090529 (Sakamoto et al. GCN 9430) 
with AZT-11 telescope of CrAO between (UT) May 29  18:41 -- 19:42 under poor 
weather conditions. We do not detect optical afterglow (Xin et al. GCN 
9431). Upper limit of a stacked image based on USNO-B1.0 star  (RA=14 09 
47.65 Dec=+24 27 44.30) assuming I=17.54  is following:

T0+      Filter, Exposure, mag.
(d)              (s)

0.2075   I       20x180    > 20.3