TITLE:   GCN CIRCULAR
NUMBER:  14395
SUBJECT: GRB 130418A: T21 optical observation
DATE:    13/04/19 16:59:36 GMT
FROM:    Veli-Pekka Hentunen at Taurus Hill Obs,A95  <veli-pekka.hentunen@kassiopeia.net>

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

We have detected GRB 130418A optical afterglow at iTelescope observatory 
T21 (Mayhill, New Mexico) 0.43-m/6.8 astrograph and FLI ProLine PL6303E 
CCD. One unfiltered image with 600 sec exposure time was made.

The afterglow was detected at following position RA 09:56:08.87 and DEC 
+13:40:02.7.

The following magnitude was obtained from the image using NOMAD1 
1036-0179295 (R = 14.910) as the comparison:

Tmid(h) +To     Filter         Exp.time   Mag          Mag err. 
10.96               unfiltered    600          19.018       0.277