GRB110619_010056_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20110619_011252795_000001_99737101   112 stars filter C [  700.2s -   790.2s] expo= 90s elev=24.8deg humid= 49% sunelev=-19.1deg (moon at  34.0deg phase=0.78 elev=+28.0 )
AL_20110619_011432608_000001_99737101   114 stars filter C [  800.1s -   890.1s] expo= 90s elev=24.7deg humid= 48% sunelev=-18.9deg (moon at  34.0deg phase=0.78 elev=+28.0 )
AL_20110619_011613342_000001_99737101    83 stars filter R [  900.9s -   990.9s] expo= 90s elev=24.6deg humid= 48% sunelev=-18.8deg (moon at  34.0deg phase=0.78 elev=+28.0 )
AL_20110619_011753161_000001_99737101    99 stars filter C [ 1000.7s -  1090.7s] expo= 90s elev=24.5deg humid= 48% sunelev=-18.7deg (moon at  34.0deg phase=0.78 elev=+28.0 )
AL_20110619_011933895_000001_99737101   104 stars filter C [ 1101.5s -  1191.5s] expo= 90s elev=24.4deg humid= 48% sunelev=-18.5deg (moon at  34.0deg phase=0.78 elev=+28.0 )
AL_20110619_012113707_000001_99737101    86 stars filter R [ 1201.2s -  1291.2s] expo= 90s elev=24.3deg humid= 47% sunelev=-18.4deg (moon at  34.0deg phase=0.78 elev=+29.0 )
AL_20110619_012356161_000001_99737201   102 stars filter C [ 1363.8s -  1453.8s] expo= 90s elev=24.1deg humid= 47% sunelev=-18.2deg (moon at  34.0deg phase=0.78 elev=+29.0 )
AL_20110619_012536192_000001_99737201    98 stars filter C [ 1463.7s -  1553.7s] expo= 90s elev=24.0deg humid= 47% sunelev=-18.1deg (moon at  34.0deg phase=0.78 elev=+29.0 )
AL_20110619_012716003_000001_99737201    74 stars filter R [ 1563.5s -  1653.5s] expo= 90s elev=23.9deg humid= 47% sunelev=-17.9deg (moon at  34.0deg phase=0.78 elev=+29.0 )
AL_20110619_012855826_000001_99737201   104 stars filter C [ 1663.4s -  1753.4s] expo= 90s elev=23.7deg humid= 48% sunelev=-17.8deg (moon at  34.0deg phase=0.78 elev=+29.0 )
AL_20110619_013035638_000001_99737201   102 stars filter C [ 1763.0s -  1853.0s] expo= 90s elev=23.6deg humid= 48% sunelev=-17.6deg (moon at  34.0deg phase=0.78 elev=+29.0 )
AL_20110619_013216372_000001_99737201    72 stars filter R [ 1863.9s -  1953.9s] expo= 90s elev=23.5deg humid= 47% sunelev=-17.5deg (moon at  34.0deg phase=0.78 elev=+29.0 )
AL_20110619_014013161_000001_99737301   106 stars filter C [ 2250.7s -  2430.7s] expo=180s elev=22.9deg humid= 47% sunelev=-16.9deg (moon at  34.0deg phase=0.78 elev=+29.0 )
AL_20110619_014323693_000001_99737301    83 stars filter C [ 2441.2s -  2621.2s] expo=180s elev=22.7deg humid= 46% sunelev=-16.6deg (moon at  34.0deg phase=0.78 elev=+29.0 )
AL_20110619_014634411_000001_99737301    72 stars filter R [ 2632.0s -  2812.0s] expo=180s elev=22.4deg humid= 46% sunelev=-16.4deg (moon at  34.0deg phase=0.78 elev=+30.0 )
AL_20110619_014944919_000001_99737301    90 stars filter C [ 2822.4s -  3002.4s] expo=180s elev=22.1deg humid= 46% sunelev=-16.0deg (moon at  34.0deg phase=0.78 elev=+30.0 )
AL_20110619_015255420_000001_99737301    93 stars filter C [ 3012.8s -  3192.8s] expo=180s elev=21.8deg humid= 46% sunelev=-15.7deg (moon at  34.0deg phase=0.78 elev=+30.0 )
AL_20110619_015605700_000001_99737301    72 stars filter R [ 3203.1s -  3383.1s] expo=180s elev=21.6deg humid= 46% sunelev=-15.4deg (moon at  34.0deg phase=0.78 elev=+30.0 )
AL_20110619_020015836_000001_99737401    80 stars filter C [ 3453.3s -  3633.3s] expo=180s elev=21.2deg humid= 47% sunelev=-15.0deg (moon at  34.0deg phase=0.78 elev=+30.0 )
AL_20110619_020637069_000001_99737401    35 stars filter R [ 3834.5s -  4014.5s] expo=180s elev=20.6deg humid= 48% sunelev=-14.4deg (moon at  34.0deg phase=0.78 elev=+30.0 )
AL_20110619_021608590_000001_99737401    49 stars filter R [ 4406.1s -  4586.1s] expo=180s elev=19.6deg humid= 50% sunelev=-13.3deg (moon at  34.0deg phase=0.78 elev=+30.0 )
AL_20110619_022638114_000001_99737501    31 stars filter R [ 5035.5s -  5215.5s] expo=180s elev=18.5deg humid= 49% sunelev=-12.1deg (moon at  34.0deg phase=0.78 elev=+30.0 )
AL_20110619_023259123_000001_99737501     0 star  filter C [ 5416.6s -  5596.6s] expo=180s elev=17.8deg humid= 47% sunelev=-11.4deg (moon at  35.0deg phase=0.78 elev=+30.0 )
AL_20110619_023609623_000001_99737501    25 stars filter R [ 5607.1s -  5787.1s] expo=180s elev=17.4deg humid= 46% sunelev=-11.0deg (moon at  35.0deg phase=0.78 elev=+30.0 )
AL_20110619_024019988_000001_99737601     0 star  filter C [ 5857.5s -  6037.5s] expo=180s elev=17.0deg humid= 44% sunelev=-10.5deg (moon at  35.0deg phase=0.78 elev=+30.0 )
AL_20110619_024330723_000001_99737601     0 star  filter C [ 6048.3s -  6228.3s] expo=180s elev=16.6deg humid= 45% sunelev=-10.1deg (moon at  35.0deg phase=0.78 elev=+30.0 )
AL_20110619_024641253_000001_99737601    26 stars filter R [ 6238.7s -  6418.7s] expo=180s elev=16.2deg humid= 45% sunelev=-9.7deg (moon at  35.0deg phase=0.78 elev=+30.0 )
AL_20110619_024951980_000001_99737601     0 star  filter C [ 6429.5s -  6609.5s] expo=180s elev=15.8deg humid= 45% sunelev=-9.3deg (moon at  35.0deg phase=0.78 elev=+30.0 )
AL_20110619_025302479_000001_99737601     0 star  filter C [ 6619.9s -  6799.9s] expo=180s elev=15.4deg humid= 46% sunelev=-8.9deg (moon at  35.0deg phase=0.78 elev=+30.0 )
AL_20110619_025612293_000001_99737601     0 star  filter R [ 6809.7s -  6989.7s] expo=180s elev=15.0deg humid= 46% sunelev=-8.5deg (moon at  35.0deg phase=0.78 elev=+30.0 )
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=-20:151 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 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
ROTSE last GRB images

Example of a GCNC email for this burst
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 700.2s after the GRB trigger
(620.2s after the notice). The elevation of the field decreased from
24 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 90.0s
(see the description in Klotz et al., 2006, A&A 451, L39).
We do not detect any OT with a limiting magnitude of:
t0+700.2s to t0+790.2s : R > 15.1

The second image is 90.0s exposure in tracking mode:
t0+800.1s to t0+890.1s : R > 16.2

We co-added a series of exposures:
t0+800.1s to t0+1453.8s : 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 700.2s 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.