GRB161022_024340_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20161022_024556596_000000_00000001     0 star  filter C [   71.2s -   131.2s] expo= 60s elev=56.3deg humid= 72% sunelev=-34.5deg (moon at  39.0deg phase=0.55 elev=+52.0 )
AL_20161022_024641799_000000_00000001     5 stars filter C [  146.3s -   176.3s] expo= 30s elev=56.5deg humid= 71% sunelev=-34.3deg (moon at  39.0deg phase=0.55 elev=+52.0 )
AL_20161022_024723002_000000_00000001     4 stars filter C [  187.6s -   217.6s] expo= 30s elev=56.6deg humid= 71% sunelev=-34.2deg (moon at  39.0deg phase=0.55 elev=+52.0 )
AL_20161022_024804237_000000_00000001     4 stars filter C [  228.8s -   258.8s] expo= 30s elev=56.7deg humid= 71% sunelev=-34.1deg (moon at  39.0deg phase=0.55 elev=+52.0 )
AL_20161022_024845643_000000_00000001     5 stars filter C [  270.2s -   300.2s] expo= 30s elev=56.8deg humid= 71% sunelev=-34.0deg (moon at  39.0deg phase=0.54 elev=+52.0 )
AL_20161022_024927112_000000_00000001     6 stars filter C [  311.7s -   341.7s] expo= 30s elev=56.9deg humid= 71% sunelev=-33.9deg (moon at  39.0deg phase=0.54 elev=+52.0 )
AL_20161022_024954815_000000_00000001     0 star  filter C [  352.9s -   442.9s] expo= 90s elev=57.1deg humid= 70% sunelev=-33.7deg (moon at  39.0deg phase=0.54 elev=+52.0 )
AL_20161022_025302471_000003_67004801     7 stars filter C [  467.1s -   557.1s] expo= 90s elev=57.3deg humid= 70% sunelev=-33.4deg (moon at  39.0deg phase=0.54 elev=+53.0 )
AL_20161022_025442993_000003_67004801     7 stars filter C [  567.6s -   657.6s] expo= 90s elev=57.6deg humid= 70% sunelev=-33.1deg (moon at  39.0deg phase=0.54 elev=+53.0 )
AL_20161022_025624415_000003_67004801     7 stars filter C [  669.0s -   759.0s] expo= 90s elev=57.8deg humid= 69% sunelev=-32.8deg (moon at  39.0deg phase=0.54 elev=+53.0 )
AL_20161022_025810071_000003_67004901     7 stars filter C [  774.6s -   864.6s] expo= 90s elev=58.1deg humid= 69% sunelev=-32.5deg (moon at  39.0deg phase=0.54 elev=+53.0 )
AL_20161022_025951258_000003_67004901     6 stars filter C [  875.9s -   965.9s] expo= 90s elev=58.3deg humid= 68% sunelev=-32.2deg (moon at  39.0deg phase=0.54 elev=+54.0 )
AL_20161022_030132040_000003_67004901     6 stars filter C [  976.6s -  1066.6s] expo= 90s elev=58.6deg humid= 68% sunelev=-31.9deg (moon at  39.0deg phase=0.54 elev=+54.0 )
AL_20161022_030321145_000000_36404201     7 stars filter C [ 1085.7s -  1175.7s] expo= 90s elev=58.9deg humid= 68% sunelev=-31.6deg (moon at  39.0deg phase=0.54 elev=+54.0 )
AL_20161022_030502582_000000_36404201     7 stars filter C [ 1187.2s -  1277.2s] expo= 90s elev=59.1deg humid= 68% sunelev=-31.3deg (moon at  39.0deg phase=0.54 elev=+54.0 )
AL_20161022_030643348_000000_36404201     6 stars filter C [ 1287.9s -  1377.9s] expo= 90s elev=59.3deg humid= 69% sunelev=-31.0deg (moon at  39.0deg phase=0.54 elev=+54.0 )
AL_20161022_030835645_000000_36404301     7 stars filter C [ 1400.3s -  1490.3s] expo= 90s elev=59.6deg humid= 69% sunelev=-30.7deg (moon at  39.0deg phase=0.54 elev=+55.0 )
AL_20161022_031016879_000000_36404301     7 stars filter C [ 1501.5s -  1591.5s] expo= 90s elev=59.9deg humid= 69% sunelev=-30.4deg (moon at  39.0deg phase=0.54 elev=+55.0 )
AL_20161022_031158348_000000_36404301     7 stars filter C [ 1602.9s -  1692.9s] expo= 90s elev=60.1deg humid= 69% sunelev=-30.1deg (moon at  39.0deg phase=0.54 elev=+55.0 )
AL_20161022_031623778_000000_36404401     8 stars filter C [ 1778.4s -  1958.4s] expo=180s elev=60.6deg humid= 70% sunelev=-29.6deg (moon at  39.0deg phase=0.54 elev=+56.0 )
AL_20161022_031654700_000000_36404401     0 star  filter C [ 1969.3s -  2149.3s] expo=180s elev=61.1deg humid= 71% sunelev=-29.1deg (moon at  39.0deg phase=0.54 elev=+56.0 )
AL_20161022_032608028_000000_36404501     7 stars filter C [ 2362.6s -  2542.6s] expo=180s elev=62.1deg humid= 72% sunelev=-27.9deg (moon at  39.0deg phase=0.54 elev=+57.0 )
AL_20161022_032918997_000000_36404501     8 stars filter C [ 2553.6s -  2733.6s] expo=180s elev=62.5deg humid= 72% sunelev=-27.3deg (moon at  39.0deg phase=0.54 elev=+57.0 )
AL_20161022_033229888_000000_36404501     7 stars filter R [ 2744.5s -  2924.5s] expo=180s elev=63.0deg humid= 73% sunelev=-26.8deg (moon at  39.0deg phase=0.54 elev=+58.0 )
AL_20161022_033600720_000000_36404601     8 stars filter C [ 2955.3s -  3135.3s] expo=180s elev=63.5deg humid= 73% sunelev=-26.2deg (moon at  39.0deg phase=0.54 elev=+58.0 )
AL_20161022_033911235_000000_36404601     8 stars filter C [ 3145.8s -  3325.8s] expo=180s elev=64.0deg humid= 74% sunelev=-25.6deg (moon at  39.0deg phase=0.54 elev=+58.0 )
AL_20161022_034221985_000000_36404601     7 stars filter R [ 3336.5s -  3516.5s] expo=180s elev=64.4deg humid= 74% sunelev=-25.0deg (moon at  39.0deg phase=0.54 elev=+59.0 )
AL_20161022_034537565_000000_36404701     8 stars filter C [ 3532.1s -  3712.1s] expo=180s elev=64.9deg humid= 75% sunelev=-24.4deg (moon at  39.0deg phase=0.54 elev=+59.0 )
AL_20161022_034848346_000000_36404701     7 stars filter C [ 3722.9s -  3902.9s] expo=180s elev=65.3deg humid= 76% sunelev=-23.9deg (moon at  39.0deg phase=0.54 elev=+59.0 )
AL_20161022_035159331_000000_36404701     6 stars filter R [ 3913.9s -  4093.9s] expo=180s elev=65.8deg humid= 77% sunelev=-23.3deg (moon at  39.0deg phase=0.54 elev=+60.0 )
AL_20161022_035528881_000000_36404801     8 stars filter C [ 4123.4s -  4303.4s] expo=180s elev=66.3deg humid= 76% sunelev=-22.7deg (moon at  39.0deg phase=0.54 elev=+60.0 )
AL_20161022_035839412_000000_36404801     8 stars filter C [ 4313.9s -  4493.9s] expo=180s elev=66.8deg humid= 77% sunelev=-22.1deg (moon at  39.0deg phase=0.54 elev=+60.0 )
AL_20161022_040150849_000000_36404801     7 stars filter R [ 4505.4s -  4685.4s] expo=180s elev=67.2deg humid= 77% sunelev=-21.5deg (moon at  39.0deg phase=0.54 elev=+61.0 )
AL_20161022_040507094_000000_36404901     8 stars filter C [ 4701.7s -  4881.7s] expo=180s elev=67.7deg humid= 78% sunelev=-21.0deg (moon at  39.0deg phase=0.54 elev=+61.0 )
AL_20161022_040817844_000000_36404901     7 stars filter C [ 4892.4s -  5072.4s] expo=180s elev=68.1deg humid= 78% sunelev=-20.4deg (moon at  39.0deg phase=0.54 elev=+61.0 )
AL_20161022_041129312_000000_36404901     7 stars filter R [ 5083.9s -  5263.9s] expo=180s elev=68.6deg humid= 78% sunelev=-19.8deg (moon at  39.0deg phase=0.54 elev=+61.0 )
AL_20161022_041456538_000000_36405001     7 stars filter C [ 5291.1s -  5471.1s] expo=180s elev=69.0deg humid= 79% sunelev=-19.2deg (moon at  39.0deg phase=0.54 elev=+62.0 )
AL_20161022_041807538_000000_36405001     8 stars filter C [ 5482.1s -  5662.1s] expo=180s elev=69.5deg humid= 79% sunelev=-18.6deg (moon at  39.0deg phase=0.54 elev=+62.0 )
AL_20161022_042118225_000000_36405001     7 stars filter R [ 5672.8s -  5852.8s] expo=180s elev=69.9deg humid= 79% sunelev=-18.0deg (moon at  39.0deg phase=0.54 elev=+62.0 )
AL_20161022_042434397_000000_36405101     7 stars filter C [ 5868.9s -  6048.9s] expo=180s elev=70.4deg humid= 79% sunelev=-17.4deg (moon at  39.0deg phase=0.54 elev=+62.0 )
AL_20161022_042745553_000000_36405101     8 stars filter C [ 6060.1s -  6240.1s] expo=180s elev=70.8deg humid= 78% sunelev=-16.9deg (moon at  39.0deg phase=0.54 elev=+62.0 )
AL_20161022_043056287_000000_36405101     7 stars filter R [ 6250.9s -  6430.9s] expo=180s elev=71.2deg humid= 78% sunelev=-16.3deg (moon at  39.0deg phase=0.54 elev=+62.0 )
AL_20161022_043416084_000000_36405201     8 stars filter C [ 6450.7s -  6630.7s] expo=180s elev=71.7deg humid= 78% sunelev=-15.7deg (moon at  39.0deg phase=0.54 elev=+63.0 )
AL_20161022_043727082_000000_36405201     7 stars filter C [ 6641.7s -  6821.7s] expo=180s elev=72.1deg humid= 79% sunelev=-15.1deg (moon at  39.0deg phase=0.54 elev=+63.0 )
AL_20161022_044037597_000000_36405201     7 stars filter R [ 6832.2s -  7012.2s] expo=180s elev=72.5deg humid= 80% sunelev=-14.5deg (moon at  39.0deg phase=0.54 elev=+63.0 )
AL_20161022_044400191_000000_36405301     8 stars filter C [ 7034.7s -  7214.7s] expo=180s elev=72.9deg humid= 80% sunelev=-13.9deg (moon at  39.0deg phase=0.54 elev=+63.0 )
AL_20161022_044711137_000000_36405301     7 stars filter C [ 7225.7s -  7405.7s] expo=180s elev=73.3deg humid= 81% sunelev=-13.4deg (moon at  39.0deg phase=0.54 elev=+63.0 )
AL_20161022_045022371_000000_36405301     6 stars filter R [ 7416.9s -  7596.9s] expo=180s elev=73.7deg humid= 81% sunelev=-12.8deg (moon at  39.0deg phase=0.54 elev=+63.0 )
AL_20161022_045353527_000000_36405401     7 stars filter C [ 7628.1s -  7808.1s] expo=180s elev=74.1deg humid= 81% sunelev=-12.2deg (moon at  39.0deg phase=0.54 elev=+63.0 )
AL_20161022_045704717_000000_36405401     6 stars filter C [ 7819.3s -  7999.3s] expo=180s elev=74.5deg humid= 81% sunelev=-11.6deg (moon at  39.0deg phase=0.54 elev=+63.0 )
AL_20161022_050016420_000000_36405401     6 stars filter R [ 8011.0s -  8191.0s] expo=180s elev=74.9deg humid= 83% sunelev=-11.0deg (moon at  39.0deg phase=0.54 elev=+63.0 )
AL_20161022_050333170_000000_36405501     6 stars filter C [ 8207.8s -  8387.8s] expo=180s elev=75.3deg humid= 83% sunelev=-10.4deg (moon at  39.0deg phase=0.54 elev=+63.0 )
AL_20161022_050644433_000000_36405501     0 star  filter C [ 8399.0s -  8579.0s] expo=180s elev=75.6deg humid= 83% sunelev=-9.8deg (moon at  39.0deg phase=0.54 elev=+63.0 )
AL_20161022_050955371_000000_36405501     6 stars filter R [ 8590.0s -  8770.0s] expo=180s elev=76.0deg humid= 83% sunelev=-9.3deg (moon at  39.0deg phase=0.54 elev=+63.0 )
Informations from GCN notice:
This is a GRB
Date of the alert : 2457683.61366 2016-10-22T02:43:40.224
Decoded useful notice informations.
RA(J2000.0) : 129.0018 08h36m00s4
DEC(J2000.0) : 54.3489 +54d20m56s04
Error radius : 1.8 arcsec
Error box : x=41:43 y=46:47 (pixels)

Other pages about TAROT Calern observatory observations

Sum of images.
Differential photometry.

Galactic coordinates

Galactic coordinates : lon=163.717005099 lat=36.7824949106
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.036
Assuming Rv=3.1: Av=0.118 Ar=0.095 Ai=0.069
extmap.fit: Extinction map E(B-V) from Schlegel:

Field of View is about 87 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 161022: 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 161022 detected by SWIFT
(trigger 718655) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 71.2s after the GRB trigger
(17.6s after the notice). The elevation of the field increased from
56 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2016-10-22T02:43:40.224

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+71.2s to t0+131.2s : R > 15.1

The second image is 30.0s exposure in tracking mode:
t0+146.3s to t0+176.3s : R > 16.2

We co-added a series of exposures:
t0+146.3s to t0+442.9s : 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 71.2s 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=163.7170 lat=+36.7825
and the galactic extinction in R band is 0.1 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.
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