GRB150619_005531_INTEGRAL at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20150619_005656839_000000_00000001     0 star  filter C [   21.0s -    81.0s] expo= 60s elev=72.8deg humid= 79% sunelev=-20.2deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_005741714_000000_00000001    92 stars filter C [   95.9s -   125.9s] expo= 30s elev=73.0deg humid= 80% sunelev=-20.1deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_005823433_000000_00000001   100 stars filter C [  137.6s -   167.6s] expo= 30s elev=73.1deg humid= 80% sunelev=-20.0deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_005903933_000000_00000001    94 stars filter C [  178.1s -   208.1s] expo= 30s elev=73.2deg humid= 80% sunelev=-20.0deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_005944464_000000_00000001   101 stars filter C [  218.7s -   248.7s] expo= 30s elev=73.3deg humid= 80% sunelev=-20.0deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_010025433_000000_00000001    94 stars filter C [  259.6s -   289.6s] expo= 30s elev=73.4deg humid= 80% sunelev=-19.9deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_010206183_000000_00000001   114 stars filter C [  300.4s -   390.4s] expo= 90s elev=73.6deg humid= 79% sunelev=-19.9deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_010346652_000000_00000001   117 stars filter C [  400.9s -   490.9s] expo= 90s elev=73.8deg humid= 79% sunelev=-19.8deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_010527902_000000_00000001    97 stars filter R [  502.1s -   592.1s] expo= 90s elev=74.1deg humid= 80% sunelev=-19.6deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_010709377_000000_00000001   123 stars filter C [  603.6s -   693.6s] expo= 90s elev=74.3deg humid= 79% sunelev=-19.5deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_010850065_000000_00000001   118 stars filter C [  704.3s -   794.3s] expo= 90s elev=74.6deg humid= 80% sunelev=-19.4deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_011031112_000000_00000001    57 stars filter R [  805.3s -   895.3s] expo= 90s elev=74.9deg humid= 80% sunelev=-19.3deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_011115221_000000_00000001     0 star  filter C [  905.8s -   995.8s] expo= 90s elev=75.1deg humid= 80% sunelev=-19.2deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_013644293_000000_00000001     0 star  filter C [ 2408.5s -  2468.5s] expo= 60s elev=78.3deg humid= 83% sunelev=-17.1deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_013730215_000000_00000001    63 stars filter C [ 2484.3s -  2514.3s] expo= 30s elev=78.4deg humid= 83% sunelev=-17.0deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_013811590_000000_00000001    62 stars filter C [ 2525.8s -  2555.8s] expo= 30s elev=78.4deg humid= 83% sunelev=-17.0deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_013852371_000000_00000001    60 stars filter C [ 2566.5s -  2596.5s] expo= 30s elev=78.5deg humid= 83% sunelev=-16.9deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_013932886_000000_00000001    61 stars filter C [ 2607.1s -  2637.1s] expo= 30s elev=78.6deg humid= 83% sunelev=-16.9deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_014013418_000000_00000001    66 stars filter C [ 2647.6s -  2677.6s] expo= 30s elev=78.6deg humid= 83% sunelev=-16.8deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_014154199_000000_00000001    86 stars filter C [ 2688.3s -  2778.3s] expo= 90s elev=78.8deg humid= 83% sunelev=-16.7deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_014335543_000000_00000001    88 stars filter C [ 2789.8s -  2879.8s] expo= 90s elev=78.9deg humid= 83% sunelev=-16.6deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_014516402_000000_00000001    67 stars filter R [ 2890.5s -  2980.5s] expo= 90s elev=79.1deg humid= 83% sunelev=-16.4deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_014657307_000000_00000001    87 stars filter C [ 2991.5s -  3081.5s] expo= 90s elev=79.2deg humid= 82% sunelev=-16.3deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_014838260_000000_00000001    79 stars filter C [ 3092.5s -  3182.5s] expo= 90s elev=79.3deg humid= 81% sunelev=-16.1deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_015018994_000000_00000001    68 stars filter R [ 3193.2s -  3283.2s] expo= 90s elev=79.5deg humid= 80% sunelev=-15.9deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_015200041_000000_00000001    87 stars filter C [ 3294.2s -  3384.2s] expo= 90s elev=79.6deg humid= 80% sunelev=-15.8deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_015341198_000000_00000001    86 stars filter C [ 3395.4s -  3485.4s] expo= 90s elev=79.7deg humid= 81% sunelev=-15.6deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_015522760_000000_00000001    64 stars filter R [ 3496.9s -  3586.9s] expo= 90s elev=79.8deg humid= 82% sunelev=-15.4deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_015704161_000000_00000001    81 stars filter C [ 3598.3s -  3688.3s] expo= 90s elev=79.9deg humid= 82% sunelev=-15.3deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_015845879_000000_00000001    77 stars filter C [ 3700.0s -  3790.0s] expo= 90s elev=79.9deg humid= 82% sunelev=-15.1deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_020027004_000000_00000001    67 stars filter R [ 3801.0s -  3891.0s] expo= 90s elev=80.0deg humid= 83% sunelev=-14.9deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_020208489_000000_00000001    85 stars filter C [ 3902.7s -  3992.7s] expo= 90s elev=80.1deg humid= 84% sunelev=-14.8deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_020519723_000000_00000001    95 stars filter C [ 4003.9s -  4183.9s] expo=180s elev=80.1deg humid= 85% sunelev=-14.6deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_020831907_000000_00000001    91 stars filter C [ 4196.0s -  4376.0s] expo=180s elev=80.2deg humid= 86% sunelev=-14.2deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_021142907_000000_00000001    77 stars filter R [ 4387.0s -  4567.0s] expo=180s elev=80.2deg humid= 86% sunelev=-13.9deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_021454704_000000_00000001    87 stars filter C [ 4578.9s -  4758.9s] expo=180s elev=80.1deg humid= 86% sunelev=-13.6deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_021805756_000000_00000001    80 stars filter C [ 4769.9s -  4949.9s] expo=180s elev=80.1deg humid= 87% sunelev=-13.2deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_022117037_000000_00000001    72 stars filter R [ 4961.1s -  5141.1s] expo=180s elev=80.0deg humid= 88% sunelev=-12.9deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_022428412_000000_00000001    81 stars filter C [ 5152.5s -  5332.5s] expo=180s elev=79.8deg humid= 87% sunelev=-12.5deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_022739983_000000_00000001    78 stars filter C [ 5344.2s -  5524.2s] expo=180s elev=79.6deg humid= 86% sunelev=-12.1deg (moon at 130.0deg phase=0.17 elev=-30.0 )
AL_20150619_023050561_000000_00000001    64 stars filter R [ 5534.7s -  5714.7s] expo=180s elev=79.4deg humid= 86% sunelev=-11.8deg (moon at 130.0deg phase=0.17 elev=-29.0 )
AL_20150619_023402436_000000_00000001    64 stars filter C [ 5726.6s -  5906.6s] expo=180s elev=79.2deg humid= 86% sunelev=-11.4deg (moon at 130.0deg phase=0.17 elev=-29.0 )
AL_20150619_023713202_000000_00000001    63 stars filter C [ 5917.4s -  6097.4s] expo=180s elev=78.9deg humid= 86% sunelev=-11.0deg (moon at 130.0deg phase=0.17 elev=-29.0 )
AL_20150619_024023893_000000_00000001    60 stars filter R [ 6108.1s -  6288.1s] expo=180s elev=78.6deg humid= 86% sunelev=-10.6deg (moon at 130.0deg phase=0.17 elev=-29.0 )
AL_20150619_024334471_000000_00000001    53 stars filter C [ 6298.7s -  6478.7s] expo=180s elev=78.3deg humid= 86% sunelev=-10.2deg (moon at 130.0deg phase=0.17 elev=-29.0 )
AL_20150619_024645018_000000_00000001    49 stars filter C [ 6489.2s -  6669.2s] expo=180s elev=77.9deg humid= 85% sunelev=-9.8deg (moon at 130.0deg phase=0.17 elev=-29.0 )
AL_20150619_024955745_000000_00000001    42 stars filter R [ 6679.9s -  6859.9s] expo=180s elev=77.6deg humid= 84% sunelev=-9.4deg (moon at 130.0deg phase=0.17 elev=-29.0 )
AL_20150619_025306979_000000_00000001     0 star  filter C [ 6871.1s -  7051.1s] expo=180s elev=77.2deg humid= 83% sunelev=-9.0deg (moon at 130.0deg phase=0.17 elev=-28.0 )
AL_20150619_025617651_000000_00000001     0 star  filter C [ 7061.9s -  7241.9s] expo=180s elev=76.8deg humid= 82% sunelev=-8.6deg (moon at 130.0deg phase=0.17 elev=-28.0 )
Informations from GCN notice:
This is a GRB
Date of the alert : 2457192.53855 2015-06-19T00:55:30.720
Decoded useful notice informations.
RA(J2000.0) : 306.040200664 20h24m09s6
DEC(J2000.0) : 33.8674606931 +33d52m02s85
Error radius : 2.6 arcmin
Error box : x=19:115 y=-8:87 (pixels)

Other pages about TAROT Calern observatory observations

Sum of images.
Differential photometry.

Galactic coordinates

Galactic coordinates : lon=73.1304903481 lat=-2.10766097539
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.500
Assuming Rv=3.1: Av=1.657 Ar=1.336 Ai=0.970
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 7046) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 21.0s after the GRB trigger
(16.7s after the notice). The elevation of the field increased from
72 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2015-06-19T00:55:30.720

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+21.0s to t0+81.0s : R > 15.1

The second image is 30.0s exposure in tracking mode:
t0+95.9s to t0+125.9s : R > 16.2

We co-added a series of exposures:
t0+95.9s to t0+390.4s : 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 21.0s 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= 73.1305 lat= -2.1077
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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