[vsnet-grb-info 12726] GRB 121212A: LOAO IzY Observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14085
SUBJECT: GRB 121212A: LOAO IzY Observation
DATE:    12/12/14 15:44:35 GMT
FROM:    Minsung Jang at Seoul National U  <rigel103 at snu.ac.kr>

M. Jang, M. Im (SNU), and Y. Urata (NCU), on behalf of EAFON

We observed GRB 121212A in IzY-bands starting at UT 08:51:52, 2012-12-12, 
~ 2 hrs after the BAT trigger (Grupe et al, GCN 14064), 
using the 1.0m telescope at Mt.Lemmon in Arizona, U.S. 

We do not detect the GRB afterglow in all bands at the position 
of the Swift/UVOT detection (Kuin et al. 14069). 
We estimate the 3-sigma limiting magnitude (AB system) of the afterglow
for each band, 

I > 20.0 (T0+7900s) 
z > 18.3 (T0+9370s) 
Y > 17.7 (T0+8260s),

by calibrating it against USNO-B1 stars with I2 magnitudes 
and 2MASS point sources without the galactic extinction correction. 

We thank the LOAO operator, I. Baek, for performing the observation.