TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  2608
SUBJECT: MASTER:HETE Alert 3259 (SRG1806-20) optical observation  
DATE:    04/06/09 15:58:25 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>

V. Lipunov, A.Krylov, V.Kornilov, G.Borisov, D.Kuvshinov,
A.Belinski, I.Chilingarian, M.Kuznetsov,  S.Potanin, G.Antipov,
E.Gorbovskoy, N.Tyurina


Sternberg Astronomical Institute, Alexsandr Krylov Observatory, Moscow

After  HETE alert 3259 (Probable SRG1806-20)  MASTER robotic
telescope (http://observ.pereplet.ru) had automatically imaging  the
corresponding area of the sky.  We have 10
unfiltered images of the error box (60s exposition, 6 square degrees
field) started at 28 May 2004	22:25:22 UT (after 10 minutes GRB time).
The limiting magnitude on the first image was about 17.5. The limiting
magnitude on sum  was about 18.6.

There is no  OT at SGR1806-20 within the Chandra error circle
as reported by (Eikenberry
et al. ApJ 563, L133; Kouveliotou et al., GCN Circ 2607).

JPG-images  are available at
http://observ.pereplet.ru/images/SRG1806-20/040528/

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