[AAVSO-HEN] GRB 090618: SARA observations

[grb at aavso.org]

The following is a GCN Circular circulated via the AAVSO network.
For an archive and more information on circulars visit:
http://lheawww.gsfc.nasa.gov/docs/gamcosray/legr/bacodine/gcn3_archive.html

TITLE:   GCN CIRCULAR
NUMBER:  9529
SUBJECT: GRB 090618: SARA observations
DATE:    09/06/18 23:00:02 GMT
FROM:    Adria C. Updike at Clemson U  <aupdike at clemson.edu>

Adria Updike, Sean Brittain, Dieter Hartmann (Clemson University), Andrew
Colson, Renata Cumbee, Brianne Hackett, Josiah Lewis, and Marten Kronberg
(SARA REU) report:

We observed the field of GRB 090618 (Schady et al., GCN 9512) using the
0.9m SARA telescope at Kitt Peak National Observatory beginning 1.5 hours
after the trigger and continuing for 2 hours.  Our observations consisted
of 45 sec exposures in the I and R bands.  The afterglow was detected in
every image.  Magnitudes are given below as compared to the USNOB.1
catalog.  Time is given in seconds after the trigger; exposure time in
seconds.

Time   Filter   Exp      Mag
------------------------------------
5400     I      45     16.2 +/- 0.05
6300     R      45     16.8 +/- 0.05

Further observations are planned.

http://www.saraobservatory.org/