[vsnet-grb-info 10189] GRB 110205A: GRAS005 optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  11637
SUBJECT: GRB 110205A: GRAS005 optical observations
DATE:    11/02/05 07:29:33 GMT
FROM:    Veli-Pekka Hentunen at Taurus Hill Obs,A95  <veli-pekka.hentunen at kassiopeia.net>

Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill
Observatory, Varkaus, Finland) report:

GRAS 005 (Global-Rent-a-Scope, Mayhill, New Mexico) Takahashi Epsilon 
250 10" FL 850 mm and SBIG ST-10XME camera were used to detect 
GRB 110205A optical afterglow. The observations were started at 
2011-02-05 02:56:38 (UT) and stopped at 2011-02-05 04:24:38 (UT). Four 
unfiltered and four photometric R observations with 300s and 600s exposure 
times were made. The afterglow was detected at following position 
RA 10 58 31.16 and DEC +67 31 31.1 consistent those given by Klotz A. 
et al. (GCN 11630) to within positional errors.

The following magnitudes were obtained from the observations using 
NOMAD1 1574-0155978 (R = 16.100) as the comparison:

Tmid(s)+T0 Filter        Exp (sec)     Mag      Mag err   Limit
3537           unfilt         600             16.3         0.1         19.7
4249           Rc            600             16.5         0.1         18.9
5327           unfilt         300             16.8         0.1         19.7
5858           Rc            600             17.0         0.1         18.9
6379           Rc            300             17.3         0.1         18.9
6903           unfilt         600             17.3         0.1         19.7
7993           Rc            300             17.6         0.1         18.9
8367           unfilt         300             17.6         0.1         19.7

A jpg image of the 600sec clear filter observation is available at the following URL link:
http://cutenews.kassiopeia.net/data/upimages/GRB110205A.jpg