GRB110619_010057_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20110619_010216554_110619_01000     0 star  filter C [   94.0s -   154.0s] expo= 60s elev=25.4deg humid= 51% sunelev=-19.8deg (moon at  34.0deg phase=0.78 elev=+27.0 )
AL_20110619_010301242_110619_01000    87 stars filter C [  168.7s -   198.7s] expo= 30s elev=25.4deg humid= 50% sunelev=-19.7deg (moon at  34.0deg phase=0.78 elev=+28.0 )
AL_20110619_010341288_110619_01000    88 stars filter C [  208.9s -   238.9s] expo= 30s elev=25.3deg humid= 51% sunelev=-19.6deg (moon at  34.0deg phase=0.78 elev=+28.0 )
AL_20110619_010421319_110619_01000    84 stars filter C [  248.9s -   278.9s] expo= 30s elev=25.3deg humid= 51% sunelev=-19.6deg (moon at  34.0deg phase=0.78 elev=+28.0 )
AL_20110619_010501367_110619_01000    82 stars filter C [  288.9s -   318.9s] expo= 30s elev=25.2deg humid= 50% sunelev=-19.5deg (moon at  34.0deg phase=0.78 elev=+28.0 )
AL_20110619_010541413_110619_01000    90 stars filter C [  328.9s -   358.9s] expo= 30s elev=25.2deg humid= 50% sunelev=-19.5deg (moon at  34.0deg phase=0.78 elev=+28.0 )
Informations from GCN notice:
This is not a GRB (a retractation has been edited)
Date of GRB : 2455731.5413995371 2011-06-19T00:59:36.920
Date of notice : 2455731.5423263889 2011-06-19T01:00:56.999
Refined position : yes (error radius=282.0 arcsec)
RA(J2000.0) : 272.606000 18h10m25s4
DEC(J2000.0) : -19.081000 -19d04m51s60
Error box : x=-19:151 y=-21:150 (pixels)

Other pages about TAROT Calern observatory observations

Status of this alert received by TAROT Calern observatory.
Sum of images.
Differential photometry.

Galactic coordinates

Galactic coordinates : lon=11.361632 lat=0.036573
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=18.619
Assuming Rv=3.1: Av=61.723 Ar=49.769 Ai=36.121
extmap.fit: Extinction map E(B-V) from Schlegel:

Field of View is about 55 arcmin (north is NOT up !)

Bibliography (Last GCNC circulars and status of satellites)

GCN infos of this burst
GCN notice of this burst
Sloan Digital Sky Survey Observations of Gamma Ray Burst Fields
GCN info bursts
Gamma-ray burst real-time sky map
GRBlog
ROTSE last GRB images

Example of a GCNC email for this burst

gcncirc@capella.gsfc.nasa.gov
GRB 110619: TAROT Calern observatory optical observations
----------------------------------------------------------------------
Klotz A. (CESR-OMP), Gendre B. (ASDC),
Boer M. (OHP-OAMP), Atteia J.L. (LATT-OMP) report:

We imaged the field of GRB 110619 detected by SWIFT
(trigger 455640) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 94.0s after the GRB trigger
(13.9s after the notice). The elevation of the field decreased from
25 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2011-06-19T00:59:36.959

The first image is trailed with a duration of 60.0s
(see the description in Klotz et al., 2006, A&A 451, L39).
We do not detect any OT with a limiting magnitude of:
t0+94.0s to t0+154.0s : R > 15.1

The second image is 30.0s exposure in tracking mode:
t0+168.7s to t0+198.7s : R > 16.2

We co-added a series of exposures:
t0+168.7s to t0+358.9s : R > 17.7
---- YES
We detect a new fading source in the error box given by SWIFT
We detected the candidate couterpart mentioned by XXX et al. (GCNC XXXX)
at the following position (+/- 3 arcsec):

RA(J2000.0) = XXh XXm XX.XXs
DEC(J2000.0) +XXd XX' XX.X"

OT was R~XX.X at 94.0s after GRB.
----

Magnitudes were estimated with the nearby USNO-B1 stars
and are not corrected for galactic dust extinction.

N.B. Galactic coordinates are lon= 11.3616 lat= +0.0366
and the galactic extinction in R band is 49.8 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.
======================================================================