GRB131202_579982_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20131202_165400251_000002_97871201     0 star  filter C [57560689.9s - 57560869.9s] expo=180s elev=23.7deg humid= 43% sunelev=-10.1deg (moon at  91.0deg phase=0.03 elev=-12.0 )
AL_20131202_183552995_000002_97872201     9 stars filter C [57566723.1s - 57566903.1s] expo=180s elev=23.6deg humid= 38% sunelev=-27.8deg (moon at  90.0deg phase=0.02 elev=-29.0 )
AL_20131202_183904027_000002_97872201    10 stars filter R [57566914.1s - 57567094.1s] expo=180s elev=23.5deg humid= 39% sunelev=-28.3deg (moon at  90.0deg phase=0.02 elev=-29.0 )
AL_20131202_184224989_000002_97872301    17 stars filter C [57567115.0s - 57567295.0s] expo=180s elev=23.3deg humid= 38% sunelev=-28.9deg (moon at  90.0deg phase=0.02 elev=-30.0 )
AL_20131202_184535739_000002_97872301    18 stars filter C [57567305.8s - 57567485.8s] expo=180s elev=23.2deg humid= 39% sunelev=-29.5deg (moon at  90.0deg phase=0.02 elev=-30.0 )
AL_20131202_184846739_000002_97872301     9 stars filter R [57567496.8s - 57567676.8s] expo=180s elev=23.0deg humid= 39% sunelev=-30.1deg (moon at  90.0deg phase=0.02 elev=-31.0 )
AL_20131202_185209306_000002_97872401    17 stars filter C [57567699.3s - 57567879.3s] expo=180s elev=22.8deg humid= 39% sunelev=-30.7deg (moon at  90.0deg phase=0.02 elev=-31.0 )
AL_20131202_185520041_000002_97872401    15 stars filter C [57567890.1s - 57568070.1s] expo=180s elev=22.7deg humid= 39% sunelev=-31.3deg (moon at  90.0deg phase=0.02 elev=-32.0 )
AL_20131202_185830775_000002_97872401    11 stars filter R [57568080.8s - 57568260.8s] expo=180s elev=22.5deg humid= 39% sunelev=-31.8deg (moon at  90.0deg phase=0.02 elev=-33.0 )
AL_20131202_190153348_000002_97872501    17 stars filter C [57568283.4s - 57568463.4s] expo=180s elev=22.3deg humid= 38% sunelev=-32.4deg (moon at  90.0deg phase=0.02 elev=-33.0 )
AL_20131202_190504332_000002_97872501    15 stars filter C [57568474.4s - 57568654.4s] expo=180s elev=22.1deg humid= 38% sunelev=-33.0deg (moon at  90.0deg phase=0.02 elev=-34.0 )
AL_20131202_190815801_000002_97872501    11 stars filter R [57568665.8s - 57568845.8s] expo=180s elev=21.9deg humid= 38% sunelev=-33.6deg (moon at  90.0deg phase=0.02 elev=-34.0 )
AL_20131202_191136705_000002_97872601    15 stars filter C [57568866.8s - 57569046.8s] expo=180s elev=21.7deg humid= 38% sunelev=-34.2deg (moon at  90.0deg phase=0.02 elev=-35.0 )
AL_20131202_191447737_000002_97872601    17 stars filter C [57569057.8s - 57569237.8s] expo=180s elev=21.4deg humid= 37% sunelev=-34.8deg (moon at  90.0deg phase=0.02 elev=-35.0 )
AL_20131202_191759143_000002_97872601    11 stars filter R [57569249.2s - 57569429.2s] expo=180s elev=21.2deg humid= 37% sunelev=-35.3deg (moon at  90.0deg phase=0.02 elev=-36.0 )
AL_20131202_192120602_000002_97872701    14 stars filter C [57569450.6s - 57569630.6s] expo=180s elev=21.0deg humid= 38% sunelev=-36.0deg (moon at  90.0deg phase=0.02 elev=-36.0 )
AL_20131202_192431555_000002_97872701    15 stars filter C [57569641.6s - 57569821.6s] expo=180s elev=20.7deg humid= 37% sunelev=-36.5deg (moon at  90.0deg phase=0.02 elev=-37.0 )
AL_20131202_192556289_000002_97872701     0 star  filter R [57569832.6s - 57570012.6s] expo=180s elev=20.5deg humid= 37% sunelev=-37.1deg (moon at  90.0deg phase=0.02 elev=-38.0 )
AL_20131202_193113619_000002_97872801    18 stars filter C [57570043.7s - 57570223.7s] expo=180s elev=20.2deg humid= 37% sunelev=-37.7deg (moon at  90.0deg phase=0.02 elev=-38.0 )
AL_20131202_193425525_000002_97872801    15 stars filter C [57570235.6s - 57570415.6s] expo=180s elev=19.9deg humid= 38% sunelev=-38.3deg (moon at  90.0deg phase=0.02 elev=-39.0 )
AL_20131202_193736509_000002_97872801    11 stars filter R [57570426.6s - 57570606.6s] expo=180s elev=19.7deg humid= 38% sunelev=-38.9deg (moon at  90.0deg phase=0.02 elev=-39.0 )
AL_20131202_195145154_000002_97872901    17 stars filter C [57571275.2s - 57571455.2s] expo=180s elev=18.4deg humid= 39% sunelev=-41.4deg (moon at  89.0deg phase=0.02 elev=-42.0 )
AL_20131202_195455670_000002_97872901    12 stars filter R [57571465.7s - 57571645.7s] expo=180s elev=18.1deg humid= 39% sunelev=-42.0deg (moon at  89.0deg phase=0.02 elev=-42.0 )
AL_20131202_195806388_000002_97872901    10 stars filter V [57571656.5s - 57571836.5s] expo=180s elev=17.8deg humid= 39% sunelev=-42.5deg (moon at  89.0deg phase=0.02 elev=-43.0 )
AL_20131202_201604163_000002_97873001    12 stars filter C [57572734.2s - 57572914.2s] expo=180s elev=16.0deg humid= 38% sunelev=-45.7deg (moon at  89.0deg phase=0.02 elev=-46.0 )
AL_20131202_201915366_000002_97873001     9 stars filter R [57572925.4s - 57573105.4s] expo=180s elev=15.6deg humid= 37% sunelev=-46.3deg (moon at  89.0deg phase=0.02 elev=-46.0 )
AL_20131202_202226108_000002_97873001     6 stars filter V [57573116.2s - 57573296.2s] expo=180s elev=15.3deg humid= 37% sunelev=-46.8deg (moon at  89.0deg phase=0.02 elev=-47.0 )
AL_20131202_204035754_000002_97873101    13 stars filter C [57574205.9s - 57574385.9s] expo=180s elev=13.2deg humid= 36% sunelev=-50.0deg (moon at  89.0deg phase=0.02 elev=-50.0 )
AL_20131202_204346739_000002_97873101     8 stars filter R [57574396.8s - 57574576.8s] expo=180s elev=12.8deg humid= 36% sunelev=-50.5deg (moon at  89.0deg phase=0.02 elev=-50.0 )
AL_20131202_204657707_000002_97873101     6 stars filter V [57574587.8s - 57574767.8s] expo=180s elev=12.4deg humid= 36% sunelev=-51.0deg (moon at  89.0deg phase=0.02 elev=-50.0 )
AL_20131202_210459970_000002_97873201    10 stars filter C [57575670.0s - 57575850.0s] expo=180s elev=10.1deg humid= 35% sunelev=-54.0deg (moon at  89.0deg phase=0.02 elev=-53.0 )
AL_20131202_210810986_000002_97873201     5 stars filter R [57575861.0s - 57576041.0s] expo=180s elev= 9.7deg humid= 35% sunelev=-54.6deg (moon at  89.0deg phase=0.02 elev=-54.0 )
AL_20131202_211121701_000002_97873201     6 stars filter V [57576051.7s - 57576231.7s] expo=180s elev= 9.3deg humid= 35% sunelev=-55.1deg (moon at  88.0deg phase=0.02 elev=-54.0 )
AL_20131202_212928623_000002_97873301     8 stars filter C [57577138.8s - 57577318.8s] expo=180s elev= 6.8deg humid= 36% sunelev=-57.9deg (moon at  88.0deg phase=0.02 elev=-57.0 )
AL_20131202_213239240_000002_97873301     5 stars filter R [57577329.3s - 57577509.3s] expo=180s elev= 6.3deg humid= 36% sunelev=-58.4deg (moon at  88.0deg phase=0.02 elev=-57.0 )
AL_20131202_213550459_000002_97873301     3 stars filter V [57577520.5s - 57577700.5s] expo=180s elev= 5.9deg humid= 36% sunelev=-58.8deg (moon at  88.0deg phase=0.02 elev=-57.0 )
AL_20131202_214932605_000002_97873401     0 star  filter C [57578342.6s - 57578522.6s] expo=180s elev= 3.9deg humid= 37% sunelev=-60.8deg (moon at  88.0deg phase=0.02 elev=-59.0 )
AL_20131202_215243363_000002_97873401     0 star  filter R [57578533.4s - 57578713.4s] expo=180s elev= 3.5deg humid= 36% sunelev=-61.2deg (moon at  88.0deg phase=0.02 elev=-60.0 )
AL_20131202_215554785_000002_97873401     0 star  filter V [57578724.8s - 57578904.8s] expo=180s elev= 3.0deg humid= 36% sunelev=-61.7deg (moon at  88.0deg phase=0.02 elev=-60.0 )
Informations from GCN notice:
This is not a GRB (a retractation has been edited)
Date of GRB : 2455962.9912571758 2012-02-05T11:47:24.620
Date of notice : 2455962.9915046296 2012-02-05T11:47:46.000
Refined position : no
RA(J2000.0) : 40.1 02h40m24s0
DEC(J2000.0) : 61.22 +61d13m12s00
Error box : x=335043:335152 y=-770594:-770485 (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=38.4044849334 lat=-63.2663061556
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.042
Assuming Rv=3.1: Av=0.140 Ar=0.113 Ai=0.082 Extinction map E(B-V) from Schlegel:

Field of View is about 169 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 131202: TAROT Calern observatory optical observations
Klotz A. (IRAP-CNRS-OMP), Gendre B. (IRAP-CNRS-OMP),
Boer M., Siellez K., Dereli H., Bardho O. (UNS-CNRS-OCA),
Atteia J.L. (IRAP-CNRS-OMP) report:

We imaged the field of GRB 131202 detected by SWIFT
(trigger 513505) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 57560689.9s after the GRB trigger
(57560668.8s after the notice). The elevation of the field decreased from
23 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2012-02-05T11:47:24.864

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+57560689.9s to t0+57560869.9s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+57566723.1s to t0+57566903.1s : R > 16.2

We co-added a series of exposures:
t0+57566723.1s to t0+57567879.3s : 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 57560689.9s 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= 38.4045 lat=-63.2663
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.