GRB160824_232225_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20160824_235858997_000003_65725401    29 stars filter C [ 2008.8s -  2188.8s] expo=180s elev=20.2deg humid= 64% sunelev=-35.2deg (moon at  31.0deg phase=0.51 elev=+17.0 )
AL_20160825_000211294_000003_65725401    33 stars filter C [ 2201.2s -  2381.2s] expo=180s elev=20.7deg humid= 63% sunelev=-35.2deg (moon at  31.0deg phase=0.51 elev=+17.0 )
AL_20160825_000523735_000003_65725401    28 stars filter R [ 2393.6s -  2573.6s] expo=180s elev=21.2deg humid= 63% sunelev=-35.1deg (moon at  31.0deg phase=0.51 elev=+18.0 )
AL_20160825_001416006_000000_31139201    30 stars filter C [ 2925.8s -  3105.8s] expo=180s elev=22.5deg humid= 63% sunelev=-34.8deg (moon at  31.0deg phase=0.51 elev=+20.0 )
AL_20160825_001728568_000000_31139201    31 stars filter C [ 3118.5s -  3298.5s] expo=180s elev=23.0deg humid= 63% sunelev=-34.7deg (moon at  31.0deg phase=0.51 elev=+20.0 )
AL_20160825_002040975_000000_31139201    29 stars filter R [ 3310.8s -  3490.8s] expo=180s elev=23.4deg humid= 64% sunelev=-34.6deg (moon at  31.0deg phase=0.51 elev=+21.0 )
AL_20160825_002400341_000000_31139301    29 stars filter C [ 3510.2s -  3690.2s] expo=180s elev=23.9deg humid= 64% sunelev=-34.4deg (moon at  31.0deg phase=0.51 elev=+21.0 )
AL_20160825_002713388_000000_31139301    34 stars filter C [ 3703.2s -  3883.2s] expo=180s elev=24.4deg humid= 64% sunelev=-34.3deg (moon at  31.0deg phase=0.51 elev=+22.0 )
AL_20160825_003025998_000000_31139301    27 stars filter R [ 3895.8s -  4075.8s] expo=180s elev=24.9deg humid= 64% sunelev=-34.1deg (moon at  30.0deg phase=0.51 elev=+22.0 )
AL_20160825_003343919_000000_31139401    37 stars filter C [ 4093.8s -  4273.8s] expo=180s elev=25.4deg humid= 64% sunelev=-34.0deg (moon at  30.0deg phase=0.51 elev=+23.0 )
AL_20160825_003657228_000000_31139401    33 stars filter C [ 4287.1s -  4467.1s] expo=180s elev=25.9deg humid= 64% sunelev=-33.8deg (moon at  30.0deg phase=0.51 elev=+24.0 )
AL_20160825_004010290_000000_31139401    24 stars filter R [ 4480.1s -  4660.1s] expo=180s elev=26.4deg humid= 64% sunelev=-33.6deg (moon at  30.0deg phase=0.51 elev=+24.0 )
AL_20160825_004328946_000000_31139501    36 stars filter C [ 4678.8s -  4858.8s] expo=180s elev=26.9deg humid= 64% sunelev=-33.4deg (moon at  30.0deg phase=0.51 elev=+25.0 )
AL_20160825_004641685_000000_31139501    34 stars filter C [ 4871.6s -  5051.6s] expo=180s elev=27.4deg humid= 64% sunelev=-33.2deg (moon at  30.0deg phase=0.51 elev=+25.0 )
AL_20160825_004954513_000000_31139501    28 stars filter R [ 5064.4s -  5244.4s] expo=180s elev=27.9deg humid= 64% sunelev=-33.0deg (moon at  30.0deg phase=0.51 elev=+26.0 )
AL_20160825_005312482_000000_31139601    35 stars filter C [ 5262.4s -  5442.4s] expo=180s elev=28.4deg humid= 64% sunelev=-32.8deg (moon at  30.0deg phase=0.51 elev=+26.0 )
AL_20160825_005626031_000000_31139601    33 stars filter C [ 5455.9s -  5635.9s] expo=180s elev=28.9deg humid= 64% sunelev=-32.5deg (moon at  30.0deg phase=0.51 elev=+27.0 )
AL_20160825_005938843_000000_31139601    26 stars filter R [ 5648.8s -  5828.8s] expo=180s elev=29.5deg humid= 65% sunelev=-32.3deg (moon at  30.0deg phase=0.51 elev=+28.0 )
AL_20160825_010256578_000000_31139701    34 stars filter C [ 5846.5s -  6026.5s] expo=180s elev=30.0deg humid= 65% sunelev=-32.1deg (moon at  30.0deg phase=0.51 elev=+28.0 )
AL_20160825_010609441_000000_31139701    37 stars filter C [ 6039.3s -  6219.3s] expo=180s elev=30.5deg humid= 65% sunelev=-31.8deg (moon at  30.0deg phase=0.51 elev=+29.0 )
AL_20160825_010922488_000000_31139701    34 stars filter R [ 6232.4s -  6412.4s] expo=180s elev=31.0deg humid= 64% sunelev=-31.6deg (moon at  30.0deg phase=0.50 elev=+29.0 )
AL_20160825_011240707_000000_31139801    31 stars filter C [ 6430.5s -  6610.5s] expo=180s elev=31.5deg humid= 64% sunelev=-31.3deg (moon at  30.0deg phase=0.50 elev=+30.0 )
AL_20160825_011553472_000000_31139801    39 stars filter C [ 6623.4s -  6803.4s] expo=180s elev=32.1deg humid= 64% sunelev=-31.0deg (moon at  30.0deg phase=0.50 elev=+30.0 )
AL_20160825_011906582_000000_31139801    26 stars filter R [ 6816.4s -  6996.4s] expo=180s elev=32.6deg humid= 64% sunelev=-30.7deg (moon at  30.0deg phase=0.50 elev=+31.0 )
AL_20160825_012225238_000000_31139901    39 stars filter C [ 7015.1s -  7195.1s] expo=180s elev=33.1deg humid= 64% sunelev=-30.4deg (moon at  30.0deg phase=0.50 elev=+32.0 )
AL_20160825_012537804_000000_31139901    40 stars filter C [ 7207.7s -  7387.7s] expo=180s elev=33.6deg humid= 64% sunelev=-30.1deg (moon at  30.0deg phase=0.50 elev=+32.0 )
AL_20160825_012850850_000000_31139901    26 stars filter R [ 7400.8s -  7580.8s] expo=180s elev=34.2deg humid= 64% sunelev=-29.8deg (moon at  30.0deg phase=0.50 elev=+33.0 )
AL_20160825_013209772_000000_31140001    35 stars filter C [ 7599.6s -  7779.6s] expo=180s elev=34.7deg humid= 64% sunelev=-29.5deg (moon at  30.0deg phase=0.50 elev=+33.0 )
AL_20160825_013522565_000000_31140001    36 stars filter C [ 7792.5s -  7972.5s] expo=180s elev=35.2deg humid= 65% sunelev=-29.2deg (moon at  30.0deg phase=0.50 elev=+34.0 )
AL_20160825_013834987_000000_31140001    29 stars filter R [ 7984.8s -  8164.8s] expo=180s elev=35.8deg humid= 65% sunelev=-28.9deg (moon at  30.0deg phase=0.50 elev=+34.0 )
AL_20160825_014153112_000000_31140101    38 stars filter C [ 8183.0s -  8363.0s] expo=180s elev=36.3deg humid= 65% sunelev=-28.5deg (moon at  30.0deg phase=0.50 elev=+35.0 )
AL_20160825_014506206_000000_31140101    35 stars filter C [ 8376.1s -  8556.1s] expo=180s elev=36.8deg humid= 65% sunelev=-28.2deg (moon at  30.0deg phase=0.50 elev=+35.0 )
AL_20160825_014822050_000000_31140101    30 stars filter R [ 8571.9s -  8751.9s] expo=180s elev=37.4deg humid= 65% sunelev=-27.8deg (moon at  30.0deg phase=0.50 elev=+36.0 )
AL_20160825_015141862_000000_31140201    34 stars filter C [ 8771.7s -  8951.7s] expo=180s elev=37.9deg humid= 65% sunelev=-27.5deg (moon at  30.0deg phase=0.50 elev=+37.0 )
AL_20160825_015454862_000000_31140201    38 stars filter C [ 8964.6s -  9144.6s] expo=180s elev=38.5deg humid= 65% sunelev=-27.1deg (moon at  30.0deg phase=0.50 elev=+37.0 )
AL_20160825_015807556_000000_31140201    31 stars filter R [ 9157.4s -  9337.4s] expo=180s elev=39.0deg humid= 65% sunelev=-26.7deg (moon at  30.0deg phase=0.50 elev=+38.0 )
AL_20160825_020126868_000000_31140301    35 stars filter C [ 9356.7s -  9536.7s] expo=180s elev=39.6deg humid= 64% sunelev=-26.3deg (moon at  30.0deg phase=0.50 elev=+38.0 )
AL_20160825_020439274_000000_31140301    39 stars filter C [ 9549.1s -  9729.1s] expo=180s elev=40.1deg humid= 64% sunelev=-26.0deg (moon at  30.0deg phase=0.50 elev=+39.0 )
AL_20160825_020751537_000000_31140301    26 stars filter R [ 9741.5s -  9921.5s] expo=180s elev=40.7deg humid= 65% sunelev=-25.6deg (moon at  30.0deg phase=0.50 elev=+39.0 )
AL_20160825_021109787_000000_31140401    40 stars filter C [ 9939.7s - 10119.7s] expo=180s elev=41.2deg humid= 65% sunelev=-25.2deg (moon at  30.0deg phase=0.50 elev=+40.0 )
AL_20160825_021422678_000000_31140401    35 stars filter C [10132.5s - 10312.5s] expo=180s elev=41.8deg humid= 65% sunelev=-24.8deg (moon at  30.0deg phase=0.50 elev=+40.0 )
AL_20160825_021735844_000000_31140401    29 stars filter R [10325.8s - 10505.8s] expo=180s elev=42.3deg humid= 65% sunelev=-24.4deg (moon at  30.0deg phase=0.50 elev=+41.0 )
AL_20160825_022053891_000000_31140501    38 stars filter C [10523.7s - 10703.7s] expo=180s elev=42.9deg humid= 65% sunelev=-24.0deg (moon at  30.0deg phase=0.50 elev=+41.0 )
AL_20160825_022406906_000000_31140501    33 stars filter C [10716.8s - 10896.8s] expo=180s elev=43.4deg humid= 65% sunelev=-23.6deg (moon at  30.0deg phase=0.50 elev=+42.0 )
AL_20160825_022719043_000000_31140501    35 stars filter R [10908.9s - 11088.9s] expo=180s elev=44.0deg humid= 65% sunelev=-23.1deg (moon at  30.0deg phase=0.50 elev=+42.0 )
AL_20160825_023037262_000000_31140601    35 stars filter C [11107.1s - 11287.1s] expo=180s elev=44.5deg humid= 66% sunelev=-22.7deg (moon at  30.0deg phase=0.50 elev=+43.0 )
AL_20160825_023350559_000000_31140601    40 stars filter C [11300.4s - 11480.4s] expo=180s elev=45.1deg humid= 66% sunelev=-22.3deg (moon at  30.0deg phase=0.50 elev=+44.0 )
AL_20160825_023702869_000000_31140601    31 stars filter R [11492.8s - 11672.8s] expo=180s elev=45.7deg humid= 67% sunelev=-21.8deg (moon at  30.0deg phase=0.50 elev=+44.0 )
AL_20160825_024020838_000000_31140701    34 stars filter C [11690.7s - 11870.7s] expo=180s elev=46.2deg humid= 67% sunelev=-21.4deg (moon at  30.0deg phase=0.50 elev=+45.0 )
AL_20160825_024334166_000000_31140701    40 stars filter C [11884.0s - 12064.0s] expo=180s elev=46.8deg humid= 67% sunelev=-21.0deg (moon at  30.0deg phase=0.50 elev=+45.0 )
AL_20160825_024647359_000000_31140701    27 stars filter R [12077.3s - 12257.3s] expo=180s elev=47.3deg humid= 68% sunelev=-20.5deg (moon at  30.0deg phase=0.50 elev=+46.0 )
AL_20160825_025006297_000000_31140801    35 stars filter C [12276.2s - 12456.2s] expo=180s elev=47.9deg humid= 68% sunelev=-20.0deg (moon at  30.0deg phase=0.50 elev=+46.0 )
AL_20160825_025319203_000000_31140801    38 stars filter C [12469.0s - 12649.0s] expo=180s elev=48.5deg humid= 68% sunelev=-19.6deg (moon at  30.0deg phase=0.50 elev=+47.0 )
AL_20160825_025632668_000000_31140801    29 stars filter R [12662.6s - 12842.6s] expo=180s elev=49.0deg humid= 68% sunelev=-19.1deg (moon at  30.0deg phase=0.50 elev=+47.0 )
AL_20160825_025951309_000000_31140901    40 stars filter C [12861.2s - 13041.2s] expo=180s elev=49.6deg humid= 68% sunelev=-18.6deg (moon at  30.0deg phase=0.50 elev=+48.0 )
AL_20160825_030304121_000000_31140901    37 stars filter C [13054.0s - 13234.0s] expo=180s elev=50.2deg humid= 68% sunelev=-18.2deg (moon at  30.0deg phase=0.50 elev=+48.0 )
AL_20160825_030617715_000000_31140901    37 stars filter R [13247.6s - 13427.6s] expo=180s elev=50.8deg humid= 68% sunelev=-17.7deg (moon at  30.0deg phase=0.50 elev=+49.0 )
AL_20160825_031355927_000000_31141101    39 stars filter C [13705.9s - 13885.9s] expo=180s elev=52.1deg humid= 69% sunelev=-16.6deg (moon at  30.0deg phase=0.50 elev=+50.0 )
AL_20160825_031709054_000000_31141101    37 stars filter C [13898.9s - 14078.9s] expo=180s elev=52.7deg humid= 69% sunelev=-16.1deg (moon at  29.0deg phase=0.50 elev=+50.0 )
AL_20160825_032021429_000000_31141101    27 stars filter R [14091.3s - 14271.3s] expo=180s elev=53.2deg humid= 68% sunelev=-15.6deg (moon at  29.0deg phase=0.50 elev=+51.0 )
AL_20160825_032342164_000000_31141201    37 stars filter C [14292.0s - 14472.0s] expo=180s elev=53.8deg humid= 67% sunelev=-15.1deg (moon at  29.0deg phase=0.50 elev=+51.0 )
AL_20160825_032654899_000000_31141201    31 stars filter C [14484.9s - 14664.9s] expo=180s elev=54.4deg humid= 67% sunelev=-14.6deg (moon at  29.0deg phase=0.50 elev=+51.0 )
AL_20160825_033007821_000000_31141201    33 stars filter R [14677.7s - 14857.7s] expo=180s elev=55.0deg humid= 67% sunelev=-14.1deg (moon at  29.0deg phase=0.50 elev=+52.0 )
AL_20160825_033326665_000000_31141301    34 stars filter C [14876.6s - 15056.6s] expo=180s elev=55.6deg humid= 67% sunelev=-13.6deg (moon at  29.0deg phase=0.50 elev=+52.0 )
AL_20160825_033639805_000000_31141301    29 stars filter C [15069.6s - 15249.6s] expo=180s elev=56.1deg humid= 67% sunelev=-13.1deg (moon at  29.0deg phase=0.50 elev=+53.0 )
AL_20160825_033952642_000000_31141301    23 stars filter R [15262.5s - 15442.5s] expo=180s elev=56.7deg humid= 67% sunelev=-12.6deg (moon at  29.0deg phase=0.50 elev=+53.0 )
AL_20160825_035721981_000000_31141401     0 star  filter C [16311.9s - 16491.9s] expo=180s elev=59.8deg humid= 67% sunelev=-9.7deg (moon at  29.0deg phase=0.50 elev=+55.0 )
AL_20160825_040035034_000000_31141401     0 star  filter R [16504.9s - 16684.9s] expo=180s elev=60.4deg humid= 67% sunelev=-9.2deg (moon at  29.0deg phase=0.50 elev=+56.0 )
AL_20160825_040347628_000000_31141401     0 star  filter V [16697.5s - 16877.5s] expo=180s elev=61.0deg humid= 67% sunelev=-8.7deg (moon at  29.0deg phase=0.50 elev=+56.0 )
Informations from GCN notice:
This is a GRB
Date of the alert : 2457625.4739 2016-08-24T23:22:24.960
Decoded useful notice informations.
RA(J2000.0) : 80.0876 05h20m21s0
DEC(J2000.0) : 40.0285 +40d01m42s60
Error radius : 1.8 arcsec
Error box : x=55:56 y=50:52 (pixels)

Other pages about TAROT Calern observatory observations

Sum of images.
Differential photometry.

Galactic coordinates

Galactic coordinates : lon=167.856302606 lat=1.69077918596
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.662
Assuming Rv=3.1: Av=2.194 Ar=1.769 Ai=1.284
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 160824: 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 160824 detected by SWIFT
(trigger 709765) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 33.48min after the GRB trigger.
The elevation of the field increased from
20 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2016-08-24T23:22:24.960

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+2008.8s to t0+2188.8s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+2201.2s to t0+2381.2s : R > 16.2

We co-added a series of exposures:
t0+2201.2s to t0+3690.2s : 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 33.48min 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=167.8563 lat= +1.6908
and the galactic extinction in R band is 1.8 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.
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