[vsnet-grb-info 14524] GRB140215A: Prompt Observations with Discovery Channel Telescope

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15838
SUBJECT: GRB140215A: Prompt Observations with Discovery Channel Telescope
DATE:    14/02/15 04:34:40 GMT
FROM:    S. Bradley Cenko at NASA/GSFC  <brad.cenko at nasa.gov>

S.B. Cenko (NASA-GSFC), V. Toy (UMD), A. Kutyrev (NASA-GSFC), J. Capone
(UMD), E. Troja (NASA-GSFC), A. Cucchiara (NASA-GSFC), S. Veilleux (UMD),
and S. Gezari (UMD) report on behalf of a larger collaboration:

We imaged the location of the Swift GRB140215A (Markwardt et al., GCN 15837) with
the Large Monolithic Imager mounted on the 4.3m Discovery Channel Telescope.
Observations began at 4:09:50 UT on 15 February 2014, ~ 2.7 min after the
Swift BAT trigger time, and were taken under sub-optimal conditions (moderate
cloud cover and bright moon).

We detect the bright optical afterglow in individual exposures beginning at
this time.  Using several nearby point sources from USNO-B1 reference, we measure
a magnitude of r' ~ 13.5 mag in our first exposure.  Multi-color observations are
ongoing.

We thank the entire staff of the Discovery Channel Telescope for assistance with
these observations.