GRB150619_203353_INTEGRAL at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20150620_024930062_000003_46462601     0 star  filter C [22352.2s - 22532.2s] expo=180s elev=77.1deg humid= 90% sunelev=-9.5deg (moon at 132.0deg phase=0.24 elev=-33.0 )
AL_20150620_025241234_000003_46462601    25 stars filter R [22543.4s - 22723.4s] expo=180s elev=76.7deg humid= 89% sunelev=-9.1deg (moon at 132.0deg phase=0.24 elev=-33.0 )
AL_20150620_025551762_000003_46462601    11 stars filter V [22734.0s - 22914.0s] expo=180s elev=76.3deg humid= 89% sunelev=-8.7deg (moon at 132.0deg phase=0.24 elev=-33.0 )
Informations from GCN notice:
This is a GRB
Date of the alert : 2457193.35686 2015-06-19T20:33:52.704
Decoded useful notice informations.
RA(J2000.0) : 306.002772727 20h24m00s6
DEC(J2000.0) : 33.8510989749 +33d51m03s95
Error radius : 2.7 arcmin
Error box : x=19:117 y=23:120 (pixels)

Other pages about TAROT Calern observatory observations

Sum of images.
Differential photometry.

Galactic coordinates

Galactic coordinates : lon=73.0960561159 lat=-2.0982983532
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.494
Assuming Rv=3.1: Av=1.637 Ar=1.320 Ai=0.958
extmap.fit: Extinction map E(B-V) from Schlegel:

Field of View is about 56 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 150619: TAROT Calern observatory optical observations
----------------------------------------------------------------------
Klotz A., Turpin D. (IRAP-CNRS-OMP),
Boer M., Gendre B., Siellez K., Dereli H., Bardho O. (UNS-CNRS-OCA),
Atteia J.L. (IRAP-CNRS-OMP) report:

We imaged the field of GRB 150619 detected by INTEGRAL
(trigger 7065) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 6.21h after the GRB trigger.
The elevation of the field decreased from
77 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2015-06-19T20:33:52.704

The first image is trailed with a duration of 180.0s
(see the description in Klotz et al., 2006, A&A 451, L39).
We do not detect any OT with a limiting magnitude of:
t0+22352.2s to t0+22532.2s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+22543.4s to t0+22723.4s : R > 16.2

We co-added a series of exposures:
t0+22543.4s to t0+22914.0s : R > 17.7
---- YES
We detect a new fading source in the error box given by INTEGRAL
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 6.21h 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= 73.0961 lat= -2.0983
and the galactic extinction in R band is 1.3 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.
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