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GCN Circular 15838

GRB140215A: Prompt Observations with Discovery Channel Telescope
2014-02-15T04:34:40Z (10 years ago)
S. Bradley Cenko at NASA/GSFC <>
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

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