[vsnet-grb-info 22916] LIGO/Virgo S190701ah: GRAWITA VST-ESO PARANAL observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  25015
SUBJECT: LIGO/Virgo S190701ah: GRAWITA VST-ESO PARANAL observations
DATE:    19/07/07 12:01:47 GMT
FROM:    Aniello Grado at INAF-OAC  <aniello.grado at gmail.com>

AUTHORS: A. Grado (INAF-Napoli), E. Cappellaro (INAF-Padova), S. Yang
(INAF-Padova), F. Getman (INAF-Napoli),  E. Brocato (INAF-Abruzzo), G.
Greco (Universita' Urbino), S. Covino (INAF-Brera), L. Izzo (IAA) on behalf
of GRAWITA.

We observed 45 sqdeg covering the field of S170701ah (LIGO/Virgo, B.
Piotrzkowski
et al., GCN #24950, updated sky localization, B. Piotrzkowski et al., GCN
#24987) in r' band with the VLT Survey Telescope (VST) equipped  with
Omegacam (1 sqdeg FOV) (Proposal ID ESO 0103.D-0070(A)).

Observations started at 08:08 UT on 2019-07-04 and ended at 10:27 on
2019-07-04. They were performed under  seeing conditions between 0.49” and
0.8”,  at an airmass between 1.95 and 1.27. Each pointing covering 1 sqdeg
was observed twice for a total exposure time of 80 seconds.
The observations, that cover ~70% of the localization probability region,
 were organized in group of 3x3 deg, the coordinates of the center of each
group are:

RA(J2000) Dec(J2000)
------------------------
02:27:14.69 -11:58:35.5
02:25:49.35 -08:58:35.5
02:24:49.23 -05:58:35.5
02:36:53.19 -05:58:35.5
02:36:14.47 -02:58:35.5

Analysis of the images is in progress.
We acknowledge excellent support from the ESO User Support Department and
from ESO observing staff in Paranal.