TITLE:   GCN CIRCULAR
NUMBER:  24986
SUBJECT: GRB 190627A: Discovery Channel Telescope late time observations
DATE:    19/07/05 16:02:47 GMT
FROM:    Simone Dichiara at UMCP/NASA/GSFC  <dichiara@umd.edu>

S.Dichiara (UMD, NASA-GSFC), P. Gatkine (UMD), J.M. Durbak (UMD),
E. Troja (UMD, NASA-GSFC), S.B. Cenko (NASA-GSFC), A. Kutyrev (UMD,
NASA-GSFC), S. Veilleux (UMD), report on behalf of a larger
collaboration:

We observed at the optical counterpart of GRB 190106A (Sonbas et al.,
GCN 24888) using the Large Monolithic Imager (LMI) on the 4.3m Discovery
Channel Telescope (DCT) at Happy Jack, AZ. Observations started on July
 05, 07:46:14 UT (about 7.85 days after the Swift trigger) with SDSS r
and i filters.
We detected the optical counterpart (Siegel & Sonbas, GCN 24889)
measuring the following AB magnitudes:

Start Time           Exposure    Filter    Magnitude
(days from trigger)     (s)
-------------------------------------------------------
7.85               4x300          r'    23.36 +- 0.11
7.87               4x300          i'    23.17 +- 0.11
-------------------------------------------------------

Magnitudes are calibrated against Pan-STARRS catalog.

We thank the staff of the Discovery Channel Telescope in particular
Casey Kyte, Ishara Nisley for assistance with these observations.