[vsnet-grb-info 16413] GRB 150413A: Tautenburg observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  17694
SUBJECT: GRB 150413A: Tautenburg observations
DATE:    15/04/13 19:50:02 GMT
FROM:    Sylvio Klose at TLS Tautenburg  <klose at tls-tautenburg.de>

S. Klose, S. Schmidl, B. Stecklum, A. Nicuesa Guelbenzu, D. A. Kann, and 
F. Ludwig (TLS Tautenburg) report:

Tautenburg observed the afterglow of GRB 150413A (Markwardt et al., GCN 
17688; Ivanov et al., GCN 17689; Tyurina et al., GCN 17690; Serino et al., 
GCN 17691; Schmalz et al., GCN 17692; Xu et al., GCN 17693) with the 1.34m 
Schmidt telescope under good weather conditions.

At a mean time of 19:23 UT we measure a preliminary magnitude of R = 17.2 
+/- 0.1, calibrated against the USNO B1 star #1618-0098185 (Xu et al.).

Observations are continuing.