GRB130903_6930_INTEGRAL at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20130903_005036539_000002_89125701    12 stars filter C [49950548.1s - 49950608.1s] expo= 60s elev= 6.9deg humid= 78% sunelev=-35.6deg (moon at  52.0deg phase=0.16 elev=-19.0 )
AL_20130903_005117493_000002_89125701    12 stars filter C [49950619.1s - 49950649.1s] expo= 30s elev= 7.0deg humid= 77% sunelev=-35.5deg (moon at  52.0deg phase=0.16 elev=-19.0 )
AL_20130903_005158477_000002_89125701     8 stars filter C [49950660.1s - 49950690.1s] expo= 30s elev= 7.1deg humid= 77% sunelev=-35.5deg (moon at  52.0deg phase=0.16 elev=-19.0 )
AL_20130903_005239664_000002_89125701     9 stars filter C [49950701.3s - 49950731.3s] expo= 30s elev= 7.3deg humid= 77% sunelev=-35.4deg (moon at  52.0deg phase=0.16 elev=-19.0 )
AL_20130903_005320684_000002_89125701     9 stars filter C [49950742.3s - 49950772.3s] expo= 30s elev= 7.4deg humid= 77% sunelev=-35.4deg (moon at  52.0deg phase=0.16 elev=-19.0 )
AL_20130903_005401902_000002_89125701     9 stars filter C [49950783.5s - 49950813.5s] expo= 30s elev= 7.5deg humid= 77% sunelev=-35.3deg (moon at  52.0deg phase=0.16 elev=-19.0 )
AL_20130903_005607184_000002_89125801    12 stars filter C [49950848.8s - 49950938.8s] expo= 90s elev= 7.8deg humid= 77% sunelev=-35.3deg (moon at  52.0deg phase=0.16 elev=-18.0 )
AL_20130903_005748215_000002_89125801    12 stars filter C [49950949.8s - 49951039.8s] expo= 90s elev= 8.1deg humid= 77% sunelev=-35.1deg (moon at  52.0deg phase=0.16 elev=-18.0 )
AL_20130903_005928731_000002_89125801    14 stars filter C [49951050.3s - 49951140.3s] expo= 90s elev= 8.4deg humid= 76% sunelev=-35.0deg (moon at  52.0deg phase=0.16 elev=-18.0 )
AL_20130903_010115293_000002_89125901    12 stars filter C [49951156.9s - 49951246.9s] expo= 90s elev= 8.7deg humid= 76% sunelev=-34.8deg (moon at  52.0deg phase=0.16 elev=-18.0 )
AL_20130903_010256235_000002_89125901    12 stars filter C [49951257.9s - 49951347.9s] expo= 90s elev= 9.0deg humid= 76% sunelev=-34.7deg (moon at  52.0deg phase=0.15 elev=-18.0 )
AL_20130903_010437016_000002_89125901    13 stars filter C [49951358.6s - 49951448.6s] expo= 90s elev= 9.3deg humid= 75% sunelev=-34.6deg (moon at  52.0deg phase=0.15 elev=-17.0 )
AL_20130903_010625688_000002_89126001    14 stars filter C [49951467.3s - 49951557.3s] expo= 90s elev= 9.6deg humid= 75% sunelev=-34.4deg (moon at  52.0deg phase=0.15 elev=-17.0 )
AL_20130903_010807110_000002_89126001    14 stars filter C [49951568.7s - 49951658.7s] expo= 90s elev= 9.9deg humid= 75% sunelev=-34.3deg (moon at  52.0deg phase=0.15 elev=-17.0 )
AL_20130903_010947595_000002_89126001    13 stars filter C [49951669.2s - 49951759.2s] expo= 90s elev=10.2deg humid= 75% sunelev=-34.1deg (moon at  52.0deg phase=0.15 elev=-17.0 )
AL_20130903_011140876_000002_89126101    14 stars filter C [49951782.5s - 49951872.5s] expo= 90s elev=10.5deg humid= 75% sunelev=-33.9deg (moon at  52.0deg phase=0.15 elev=-16.0 )
AL_20130903_011322118_000002_89126101    14 stars filter C [49951883.7s - 49951973.7s] expo= 90s elev=10.8deg humid= 75% sunelev=-33.8deg (moon at  52.0deg phase=0.15 elev=-16.0 )
AL_20130903_011502805_000002_89126101    18 stars filter C [49951984.5s - 49952074.5s] expo= 90s elev=11.1deg humid= 75% sunelev=-33.6deg (moon at  52.0deg phase=0.15 elev=-16.0 )
AL_20130903_011928540_000002_89126201    15 stars filter C [49952160.1s - 49952340.1s] expo=180s elev=11.8deg humid= 75% sunelev=-33.4deg (moon at  52.0deg phase=0.15 elev=-15.0 )
AL_20130903_012239493_000002_89126201    22 stars filter C [49952351.1s - 49952531.1s] expo=180s elev=12.3deg humid= 75% sunelev=-33.1deg (moon at  52.0deg phase=0.15 elev=-15.0 )
AL_20130903_012550026_000002_89126201    12 stars filter R [49952541.6s - 49952721.6s] expo=180s elev=12.9deg humid= 75% sunelev=-32.7deg (moon at  52.0deg phase=0.15 elev=-14.0 )
AL_20130903_012911401_000002_89126301    20 stars filter C [49952743.1s - 49952923.1s] expo=180s elev=13.5deg humid= 75% sunelev=-32.4deg (moon at  53.0deg phase=0.15 elev=-14.0 )
AL_20130903_013222651_000002_89126301    19 stars filter C [49952934.3s - 49953114.3s] expo=180s elev=14.1deg humid= 75% sunelev=-32.1deg (moon at  53.0deg phase=0.15 elev=-13.0 )
AL_20130903_013534064_000002_89126301    13 stars filter R [49953125.7s - 49953305.7s] expo=180s elev=14.6deg humid= 75% sunelev=-31.7deg (moon at  53.0deg phase=0.15 elev=-13.0 )
AL_20130903_013855735_000002_89126401    23 stars filter C [49953327.4s - 49953507.4s] expo=180s elev=15.2deg humid= 75% sunelev=-31.4deg (moon at  53.0deg phase=0.15 elev=-12.0 )
AL_20130903_014207220_000002_89126401    19 stars filter C [49953518.8s - 49953698.8s] expo=180s elev=15.7deg humid= 75% sunelev=-31.0deg (moon at  53.0deg phase=0.15 elev=-12.0 )
AL_20130903_014518396_000002_89126401    16 stars filter R [49953710.0s - 49953890.0s] expo=180s elev=16.3deg humid= 74% sunelev=-30.7deg (moon at  53.0deg phase=0.15 elev=-12.0 )
AL_20130903_014839849_000002_89126501    20 stars filter C [49953911.5s - 49954091.5s] expo=180s elev=16.9deg humid= 75% sunelev=-30.3deg (moon at  53.0deg phase=0.15 elev=-11.0 )
AL_20130903_015151053_000002_89126501    22 stars filter C [49954102.7s - 49954282.7s] expo=180s elev=17.4deg humid= 76% sunelev=-29.9deg (moon at  53.0deg phase=0.15 elev=-11.0 )
AL_20130903_015501779_000002_89126501    16 stars filter R [49954293.4s - 49954473.4s] expo=180s elev=18.0deg humid= 77% sunelev=-29.6deg (moon at  53.0deg phase=0.15 elev=-10.0 )
AL_20130903_015823935_000002_89126601    20 stars filter C [49954495.5s - 49954675.5s] expo=180s elev=18.6deg humid= 78% sunelev=-29.1deg (moon at  53.0deg phase=0.15 elev=-10.0 )
AL_20130903_020134654_000002_89126601    23 stars filter C [49954686.3s - 49954866.3s] expo=180s elev=19.1deg humid= 79% sunelev=-28.8deg (moon at  53.0deg phase=0.15 elev= -9.0 )
AL_20130903_020445828_000002_89126601    15 stars filter R [49954877.5s - 49955057.5s] expo=180s elev=19.6deg humid= 79% sunelev=-28.4deg (moon at  53.0deg phase=0.15 elev= -9.0 )
AL_20130903_020808235_000002_89126701    22 stars filter C [49955079.8s - 49955259.8s] expo=180s elev=20.2deg humid= 79% sunelev=-27.9deg (moon at  53.0deg phase=0.15 elev= -8.0 )
AL_20130903_021120610_000002_89126701    26 stars filter C [49955272.2s - 49955452.2s] expo=180s elev=20.8deg humid= 78% sunelev=-27.5deg (moon at  53.0deg phase=0.15 elev= -7.0 )
AL_20130903_021431382_000002_89126701    16 stars filter R [49955463.0s - 49955643.0s] expo=180s elev=21.3deg humid= 78% sunelev=-27.1deg (moon at  53.0deg phase=0.15 elev= -7.0 )
AL_20130903_021752257_000002_89126801    27 stars filter C [49955663.9s - 49955843.9s] expo=180s elev=21.8deg humid= 77% sunelev=-26.7deg (moon at  53.0deg phase=0.15 elev= -6.0 )
AL_20130903_022103070_000002_89126801    25 stars filter C [49955854.7s - 49956034.7s] expo=180s elev=22.4deg humid= 76% sunelev=-26.3deg (moon at  53.0deg phase=0.15 elev= -6.0 )
AL_20130903_022413763_000002_89126801    19 stars filter R [49956045.4s - 49956225.4s] expo=180s elev=22.9deg humid= 76% sunelev=-25.9deg (moon at  53.0deg phase=0.15 elev= -5.0 )
AL_20130903_022746075_000002_89126901    23 stars filter C [49956257.7s - 49956437.7s] expo=180s elev=23.5deg humid= 77% sunelev=-25.4deg (moon at  53.0deg phase=0.15 elev= -5.0 )
AL_20130903_023056669_000002_89126901    19 stars filter C [49956448.3s - 49956628.3s] expo=180s elev=24.0deg humid= 76% sunelev=-24.9deg (moon at  53.0deg phase=0.15 elev= -4.0 )
AL_20130903_023407785_000002_89126901    19 stars filter R [49956639.5s - 49956819.5s] expo=180s elev=24.5deg humid= 76% sunelev=-24.5deg (moon at  53.0deg phase=0.15 elev= -4.0 )
AL_20130903_023724160_000002_89127001    22 stars filter C [49956835.8s - 49957015.8s] expo=180s elev=25.1deg humid= 76% sunelev=-24.0deg (moon at  53.0deg phase=0.15 elev= -3.0 )
AL_20130903_024034910_000002_89127001    24 stars filter C [49957026.5s - 49957206.5s] expo=180s elev=25.6deg humid= 75% sunelev=-23.6deg (moon at  53.0deg phase=0.15 elev= -3.0 )
AL_20130903_024346119_000002_89127001    19 stars filter R [49957217.8s - 49957397.8s] expo=180s elev=26.1deg humid= 75% sunelev=-23.1deg (moon at  53.0deg phase=0.15 elev= -2.0 )
AL_20130903_024704494_000002_89127101    19 stars filter C [49957416.2s - 49957596.2s] expo=180s elev=26.6deg humid= 75% sunelev=-22.7deg (moon at  53.0deg phase=0.15 elev= -2.0 )
AL_20130903_025015244_000002_89127101    25 stars filter C [49957606.9s - 49957786.9s] expo=180s elev=27.1deg humid= 75% sunelev=-22.2deg (moon at  53.0deg phase=0.15 elev= -1.0 )
AL_20130903_025326249_000002_89127101    18 stars filter R [49957797.9s - 49957977.9s] expo=180s elev=27.6deg humid= 74% sunelev=-21.7deg (moon at  53.0deg phase=0.15 elev= -1.0 )
AL_20130903_025657670_000002_89127201    26 stars filter C [49958009.3s - 49958189.3s] expo=180s elev=28.1deg humid= 74% sunelev=-21.2deg (moon at  53.0deg phase=0.15 elev= +0.0 )
AL_20130903_030008170_000002_89127201    25 stars filter C [49958199.8s - 49958379.8s] expo=180s elev=28.6deg humid= 73% sunelev=-20.7deg (moon at  53.0deg phase=0.15 elev= +0.0 )
AL_20130903_030318707_000002_89127201    18 stars filter R [49958390.3s - 49958570.3s] expo=180s elev=29.1deg humid= 73% sunelev=-20.3deg (moon at  53.0deg phase=0.15 elev= +0.0 )
AL_20130903_030635254_000002_89127301    28 stars filter C [49958586.9s - 49958766.9s] expo=180s elev=29.6deg humid= 73% sunelev=-19.8deg (moon at  53.0deg phase=0.15 elev= +1.0 )
AL_20130903_030945957_000002_89127301    23 stars filter C [49958777.6s - 49958957.6s] expo=180s elev=30.1deg humid= 73% sunelev=-19.3deg (moon at  53.0deg phase=0.15 elev= +1.0 )
AL_20130903_031257709_000002_89127301    20 stars filter R [49958969.3s - 49959149.3s] expo=180s elev=30.6deg humid= 73% sunelev=-18.8deg (moon at  53.0deg phase=0.15 elev= +2.0 )
AL_20130903_031616256_000002_89127401    26 stars filter C [49959167.9s - 49959347.9s] expo=180s elev=31.1deg humid= 74% sunelev=-18.3deg (moon at  53.0deg phase=0.15 elev= +2.0 )
AL_20130903_031927522_000002_89127401    24 stars filter C [49959359.1s - 49959539.1s] expo=180s elev=31.5deg humid= 72% sunelev=-17.8deg (moon at  53.0deg phase=0.15 elev= +3.0 )
AL_20130903_032238709_000002_89127401    19 stars filter R [49959550.4s - 49959730.4s] expo=180s elev=32.0deg humid= 70% sunelev=-17.3deg (moon at  53.0deg phase=0.15 elev= +3.0 )
AL_20130903_032600153_000002_89127501    20 stars filter C [49959751.8s - 49959931.8s] expo=180s elev=32.5deg humid= 70% sunelev=-16.8deg (moon at  54.0deg phase=0.15 elev= +4.0 )
AL_20130903_032911107_000002_89127501    26 stars filter C [49959942.7s - 49960122.7s] expo=180s elev=32.9deg humid= 71% sunelev=-16.3deg (moon at  54.0deg phase=0.15 elev= +4.0 )
AL_20130903_033221653_000002_89127501    19 stars filter R [49960133.3s - 49960313.3s] expo=180s elev=33.4deg humid= 71% sunelev=-15.7deg (moon at  54.0deg phase=0.15 elev= +5.0 )
AL_20130903_033543487_000002_89127601    25 stars filter C [49960335.1s - 49960515.1s] expo=180s elev=33.9deg humid= 72% sunelev=-15.2deg (moon at  54.0deg phase=0.15 elev= +5.0 )
AL_20130903_033854472_000002_89127601    25 stars filter C [49960526.1s - 49960706.1s] expo=180s elev=34.3deg humid= 71% sunelev=-14.7deg (moon at  54.0deg phase=0.15 elev= +6.0 )
AL_20130903_034205034_000002_89127601    18 stars filter R [49960716.6s - 49960896.6s] expo=180s elev=34.7deg humid= 70% sunelev=-14.2deg (moon at  54.0deg phase=0.15 elev= +7.0 )
AL_20130903_034528507_000002_89127701    23 stars filter C [49960920.2s - 49961100.2s] expo=180s elev=35.2deg humid= 70% sunelev=-13.6deg (moon at  54.0deg phase=0.15 elev= +7.0 )
AL_20130903_034839757_000002_89127701    23 stars filter C [49961111.4s - 49961291.4s] expo=180s elev=35.6deg humid= 70% sunelev=-13.1deg (moon at  54.0deg phase=0.15 elev= +8.0 )
AL_20130903_035150742_000002_89127701    12 stars filter R [49961302.4s - 49961482.4s] expo=180s elev=36.0deg humid= 71% sunelev=-12.6deg (moon at  54.0deg phase=0.15 elev= +8.0 )
AL_20130903_035512405_000002_89127801    16 stars filter C [49961504.0s - 49961684.0s] expo=180s elev=36.4deg humid= 72% sunelev=-12.0deg (moon at  54.0deg phase=0.15 elev= +9.0 )
AL_20130903_035823577_000002_89127801    14 stars filter C [49961695.2s - 49961875.2s] expo=180s elev=36.8deg humid= 73% sunelev=-11.5deg (moon at  54.0deg phase=0.15 elev= +9.0 )
AL_20130903_040134827_000002_89127801    12 stars filter R [49961886.4s - 49962066.4s] expo=180s elev=37.2deg humid= 72% sunelev=-11.0deg (moon at  54.0deg phase=0.15 elev=+10.0 )
AL_20130903_040456019_000002_89127901     0 star  filter C [49962087.6s - 49962267.6s] expo=180s elev=37.7deg humid= 70% sunelev=-10.4deg (moon at  54.0deg phase=0.15 elev=+10.0 )
AL_20130903_040806956_000002_89127901     0 star  filter C [49962278.6s - 49962458.6s] expo=180s elev=38.0deg humid= 70% sunelev=-9.9deg (moon at  54.0deg phase=0.15 elev=+11.0 )
AL_20130903_041117769_000002_89127901     8 stars filter R [49962469.4s - 49962649.4s] expo=180s elev=38.4deg humid= 71% sunelev=-9.3deg (moon at  54.0deg phase=0.15 elev=+12.0 )
Informations from GCN notice:
This is a GRB
Date of GRB : 2455960.4029812501 2012-02-02T21:40:17.580
Date of notice : 2455960.4030439816 2012-02-02T21:40:23.000
Refined position : yes (error radius=150.0 arcsec)
RA(J2000.0) : 203.506400 13h34m01s5
DEC(J2000.0) : 22.774600 +22d46m28s56
Error box : x=102544:102635 y=-51204:-51113 (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=203.253676 lat=-18.403354
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.110
Assuming Rv=3.1: Av=0.363 Ar=0.293 Ai=0.213
extmap.fit: Extinction map E(B-V) from Schlegel:

Field of View is about 66 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 130903: TAROT Calern observatory optical observations
----------------------------------------------------------------------
Klotz A. (IRAP-CNRS-OMP), Gendre B. (ASDC/INAF-OAR),
Boer M. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report:

We imaged the field of GRB 130903 detected by INTEGRAL
(trigger 6461) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 49950548.1s after the GRB trigger
(49950548.4s after the notice). The elevation of the field increased from
6 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2012-02-02T21:40:23.302

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+49950548.1s to t0+49950608.1s : R > 15.1

The second image is 30.0s exposure in tracking mode:
t0+49950619.1s to t0+49950649.1s : R > 16.2

We co-added a series of exposures:
t0+49950619.1s to t0+49950938.8s : 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 49950548.1s 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=203.2537 lat=-18.4034
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.
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