GRB161007_212543_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20161007_214635156_000003_66701101     0 star  filter C [ 1212.2s -  1302.2s] expo= 90s elev= 1.1deg humid= 91% sunelev=-46.9deg (moon at 166.0deg phase=0.42 elev= -6.0 )
AL_20161007_215002124_000003_66701201     0 star  filter C [ 1364.0s -  1454.0s] expo= 90s elev= 1.5deg humid= 91% sunelev=-47.2deg (moon at 166.0deg phase=0.42 elev= -7.0 )
AL_20161007_215142882_000003_66701201     0 star  filter C [ 1464.7s -  1554.7s] expo= 90s elev= 1.7deg humid= 91% sunelev=-47.4deg (moon at 166.0deg phase=0.42 elev= -7.0 )
AL_20161007_215324085_000003_66701201     0 star  filter C [ 1566.0s -  1656.0s] expo= 90s elev= 2.0deg humid= 90% sunelev=-47.5deg (moon at 166.0deg phase=0.42 elev= -7.0 )
AL_20161007_215844335_000003_66701301     0 star  filter C [ 1796.2s -  1976.2s] expo=180s elev= 2.6deg humid= 90% sunelev=-47.9deg (moon at 166.0deg phase=0.42 elev= -8.0 )
AL_20161007_220155782_000003_66701301     0 star  filter C [ 1987.7s -  2167.7s] expo=180s elev= 3.1deg humid= 91% sunelev=-48.2deg (moon at 166.0deg phase=0.42 elev= -9.0 )
AL_20161007_220506798_000003_66701301     3 stars filter C [ 2178.7s -  2358.7s] expo=180s elev= 3.6deg humid= 91% sunelev=-48.5deg (moon at 166.0deg phase=0.42 elev= -9.0 )
AL_20161007_220829579_000000_35145201     7 stars filter C [ 2381.5s -  2561.5s] expo=180s elev= 4.1deg humid= 92% sunelev=-48.8deg (moon at 166.0deg phase=0.42 elev=-10.0 )
AL_20161007_221140564_000000_35145201    11 stars filter C [ 2572.5s -  2752.5s] expo=180s elev= 4.6deg humid= 92% sunelev=-49.1deg (moon at 166.0deg phase=0.42 elev=-10.0 )
AL_20161007_221451291_000000_35145201    20 stars filter C [ 2763.2s -  2943.2s] expo=180s elev= 5.1deg humid= 92% sunelev=-49.3deg (moon at 166.0deg phase=0.42 elev=-11.0 )
AL_20161007_221822041_000000_35145301     5 stars filter C [ 2973.9s -  3153.9s] expo=180s elev= 5.6deg humid= 92% sunelev=-49.6deg (moon at 166.0deg phase=0.42 elev=-11.0 )
AL_20161007_222049322_000000_35145301     0 star  filter C [ 3165.3s -  3345.3s] expo=180s elev= 6.1deg humid= 92% sunelev=-49.8deg (moon at 166.0deg phase=0.42 elev=-12.0 )
AL_20161007_224737275_000000_35145601     5 stars filter C [ 4729.2s -  4909.2s] expo=180s elev=10.4deg humid= 93% sunelev=-51.4deg (moon at 166.0deg phase=0.42 elev=-16.0 )
AL_20161007_225048744_000000_35145601    28 stars filter C [ 4920.6s -  5100.6s] expo=180s elev=10.9deg humid= 93% sunelev=-51.5deg (moon at 167.0deg phase=0.42 elev=-17.0 )
AL_20161007_225359707_000000_35145601    39 stars filter C [ 5111.6s -  5291.6s] expo=180s elev=11.4deg humid= 94% sunelev=-51.6deg (moon at 167.0deg phase=0.42 elev=-17.0 )
AL_20161007_225715536_000000_35145701    36 stars filter C [ 5307.4s -  5487.4s] expo=180s elev=12.0deg humid= 94% sunelev=-51.7deg (moon at 167.0deg phase=0.42 elev=-18.0 )
AL_20161007_230026301_000000_35145701    17 stars filter C [ 5498.2s -  5678.2s] expo=180s elev=12.5deg humid= 94% sunelev=-51.8deg (moon at 167.0deg phase=0.42 elev=-18.0 )
AL_20161007_230338190_000000_35145701    35 stars filter C [ 5690.1s -  5870.1s] expo=180s elev=13.1deg humid= 94% sunelev=-51.9deg (moon at 167.0deg phase=0.42 elev=-19.0 )
AL_20161007_230655003_000000_35145801    42 stars filter C [ 5886.9s -  6066.9s] expo=180s elev=13.6deg humid= 94% sunelev=-52.0deg (moon at 167.0deg phase=0.42 elev=-20.0 )
AL_20161007_230735034_000000_35145801     0 star  filter C [ 6078.3s -  6258.3s] expo=180s elev=14.2deg humid= 94% sunelev=-52.0deg (moon at 167.0deg phase=0.42 elev=-20.0 )
AL_20161008_001503266_000000_35146501    12 stars filter C [ 9975.1s - 10155.1s] expo=180s elev=25.5deg humid= 93% sunelev=-50.4deg (moon at 167.0deg phase=0.42 elev=-31.0 )
AL_20161008_001813516_000000_35146501    13 stars filter C [10165.4s - 10345.4s] expo=180s elev=26.1deg humid= 93% sunelev=-50.2deg (moon at 167.0deg phase=0.42 elev=-32.0 )
AL_20161008_002058328_000000_35146501     0 star  filter C [10356.6s - 10536.6s] expo=180s elev=26.7deg humid= 93% sunelev=-49.9deg (moon at 167.0deg phase=0.42 elev=-32.0 )
AL_20161008_004424452_000000_35146801    56 stars filter C [11736.3s - 11916.3s] expo=180s elev=30.8deg humid= 94% sunelev=-48.0deg (moon at 167.0deg phase=0.42 elev=-36.0 )
AL_20161008_004735186_000000_35146801    54 stars filter C [11927.1s - 12107.1s] expo=180s elev=31.4deg humid= 94% sunelev=-47.7deg (moon at 167.0deg phase=0.42 elev=-37.0 )
AL_20161008_005046514_000000_35146801    57 stars filter C [12118.3s - 12298.3s] expo=180s elev=32.0deg humid= 94% sunelev=-47.4deg (moon at 168.0deg phase=0.42 elev=-38.0 )
AL_20161008_005403467_000000_35146901    59 stars filter C [12315.1s - 12495.1s] expo=180s elev=32.5deg humid= 93% sunelev=-47.1deg (moon at 168.0deg phase=0.42 elev=-38.0 )
AL_20161008_005713915_000000_35146901    56 stars filter C [12505.8s - 12685.8s] expo=180s elev=33.1deg humid= 94% sunelev=-46.8deg (moon at 168.0deg phase=0.42 elev=-39.0 )
AL_20161008_005724837_000000_35146901     0 star  filter C [12697.3s - 12877.3s] expo=180s elev=33.7deg humid= 94% sunelev=-46.4deg (moon at 168.0deg phase=0.43 elev=-39.0 )
AL_20161008_025019135_000000_35147701    58 stars filter C [19291.0s - 19471.0s] expo=180s elev=53.2deg humid= 75% sunelev=-30.9deg (moon at 169.0deg phase=0.43 elev=-56.0 )
AL_20161008_025330135_000000_35147701    57 stars filter C [19482.0s - 19662.0s] expo=180s elev=53.7deg humid= 73% sunelev=-30.3deg (moon at 169.0deg phase=0.43 elev=-57.0 )
AL_20161008_025640619_000000_35147701    54 stars filter C [19672.5s - 19852.5s] expo=180s elev=54.3deg humid= 73% sunelev=-29.8deg (moon at 169.0deg phase=0.43 elev=-57.0 )
AL_20161008_031444396_000000_35147801    57 stars filter C [20756.3s - 20936.3s] expo=180s elev=57.2deg humid= 73% sunelev=-26.8deg (moon at 169.0deg phase=0.43 elev=-59.0 )
AL_20161008_031755606_000000_35147801    57 stars filter C [20947.5s - 21127.5s] expo=180s elev=57.7deg humid= 72% sunelev=-26.2deg (moon at 169.0deg phase=0.43 elev=-60.0 )
AL_20161008_032106153_000000_35147801    54 stars filter C [21138.0s - 21318.0s] expo=180s elev=58.2deg humid= 70% sunelev=-25.7deg (moon at 169.0deg phase=0.43 elev=-60.0 )
AL_20161008_033927462_000000_35147901    59 stars filter C [22239.4s - 22419.4s] expo=180s elev=61.0deg humid= 72% sunelev=-22.5deg (moon at 169.0deg phase=0.43 elev=-62.0 )
AL_20161008_034238899_000000_35147901    54 stars filter C [22430.8s - 22610.8s] expo=180s elev=61.4deg humid= 72% sunelev=-21.9deg (moon at 169.0deg phase=0.43 elev=-62.0 )
AL_20161008_034549899_000000_35147901    57 stars filter C [22621.8s - 22801.8s] expo=180s elev=61.9deg humid= 69% sunelev=-21.4deg (moon at 169.0deg phase=0.43 elev=-62.0 )
AL_20161008_040342531_000000_35148001    60 stars filter C [23694.4s - 23874.4s] expo=180s elev=64.3deg humid= 63% sunelev=-18.2deg (moon at 169.0deg phase=0.44 elev=-64.0 )
AL_20161008_040653515_000000_35148001    53 stars filter C [23885.4s - 24065.4s] expo=180s elev=64.7deg humid= 63% sunelev=-17.6deg (moon at 169.0deg phase=0.44 elev=-64.0 )
AL_20161008_041004294_000000_35148001    59 stars filter C [24076.2s - 24256.2s] expo=180s elev=65.0deg humid= 63% sunelev=-17.1deg (moon at 169.0deg phase=0.44 elev=-64.0 )
AL_20161008_042807817_000000_35148101    57 stars filter C [25159.7s - 25339.7s] expo=180s elev=67.0deg humid= 58% sunelev=-13.8deg (moon at 170.0deg phase=0.44 elev=-65.0 )
AL_20161008_043118151_000000_35148101    52 stars filter C [25350.0s - 25530.0s] expo=180s elev=67.2deg humid= 56% sunelev=-13.3deg (moon at 170.0deg phase=0.44 elev=-65.0 )
AL_20161008_043429573_000000_35148101    53 stars filter C [25541.5s - 25721.5s] expo=180s elev=67.5deg humid= 54% sunelev=-12.7deg (moon at 170.0deg phase=0.44 elev=-65.0 )
AL_20161008_045247880_000000_35148201     0 star  filter C [26639.7s - 26819.7s] expo=180s elev=68.8deg humid= 51% sunelev=-9.4deg (moon at 170.0deg phase=0.44 elev=-65.0 )
AL_20161008_045558802_000000_35148201     0 star  filter C [26830.7s - 27010.7s] expo=180s elev=69.0deg humid= 57% sunelev=-8.8deg (moon at 170.0deg phase=0.44 elev=-65.0 )
AL_20161008_045909583_000000_35148201     0 star  filter C [27021.5s - 27201.5s] expo=180s elev=69.1deg humid= 61% sunelev=-8.2deg (moon at 170.0deg phase=0.44 elev=-64.0 )
Informations from GCN notice:
This is a GRB
Date of the alert : 2457669.39286 2016-10-07T21:25:43.104
Decoded useful notice informations.
RA(J2000.0) : 103.4094 06h53m38s2
DEC(J2000.0) : 23.3067 +23d18m24s11
Error radius : 1.8 arcsec
Error box : x=45:46 y=1071:1072 (pixels)

Other pages about TAROT Calern observatory observations

Sum of images.
Differential photometry.

Galactic coordinates

Galactic coordinates : lon=192.181169707 lat=10.8274009143
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.122
Assuming Rv=3.1: Av=0.403 Ar=0.325 Ai=0.236 Extinction map E(B-V) from Schlegel:

Field of View is about 61 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 161007: 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 161007 detected by SWIFT
(trigger 716127) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 20.20min after the GRB trigger.
The elevation of the field increased from
1 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2016-10-07T21:25:43.104

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+1212.2s to t0+1302.2s : R > 15.1

The second image is 90.0s exposure in tracking mode:
t0+1364.0s to t0+1454.0s : R > 16.2

We co-added a series of exposures:
t0+1364.0s to t0+2358.7s : 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 20.20min 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=192.1812 lat=+10.8274
and the galactic extinction in R band is 0.3 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.