[vsnet-grb-info 1928] GRB050805a: MASTER optical candidat

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3767
SUBJECT: GRB050805a: MASTER optical candidat
DATE:    05/08/05 20:48:55 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc at observ.inetcomm.ru>

V. Lipunov,  V.Kornilov, D.Kuvshinov,  N.Tyurina, A.Belinski,
E.Gorbovskoy,  A.Krylov, G.Borisov, V.Vladimirov, Krushinski V.

Sternberg Astronomical Institute, Moscow Union "Optic"

    MASTER (http://observ.pereplet.ru) responded to GRB 050801 (Swift trigger 
149118). The first image  was 35 sec after  Notice Time and 113 sec 
after SWIFT 
probable GRB050805 
detection  (19:14:00.34 UT, GCN3766)   under the
  evening sky near the horizont. The first image was saturated.
The first not saturated image was at 720 sec after GRB time (exposition 1 s).
Optical limit is about 12.5 (unfiltred close to R).
On next images we see new  variable faint source  14.5 inside Swift error 
box 
wich disapear after .

alpha = 22 04 40.91
delta = +29 51 48.1
error is about 2''.

The JPG-images   are available at
http://observ.pereplet.ru/images/GRB050805/1.jpg  .


This work is supported by RFFI  04-02-16411 grant.
This message can be cited.
Mailto: lipunov at sai.msu.ru