GRB100413_173616_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20100414_232029029_391570_92742100    34 stars filter V [107034.5s - 107214.5s] expo=180s elev=27.7deg humid= 78% sunelev=-36.6deg (moon at 113.0deg phase=0.04 elev=-30.0 )
AL_20100414_232347763_391570_92742100    28 stars filter R [107232.1s - 107412.1s] expo=180s elev=28.3deg humid= 77% sunelev=-36.6deg (moon at 113.0deg phase=0.04 elev=-30.0 )
AL_20100414_232704060_391570_92742100    30 stars filter I [107429.6s - 107609.6s] expo=180s elev=28.8deg humid= 77% sunelev=-36.6deg (moon at 113.0deg phase=0.04 elev=-30.0 )
AL_20100415_003055173_391571_92742200    36 stars filter V [111259.3s - 111439.3s] expo=180s elev=40.1deg humid= 71% sunelev=-35.1deg (moon at 113.0deg phase=0.04 elev=-30.0 )
AL_20100415_003414392_391571_92742200    30 stars filter R [111458.9s - 111638.9s] expo=180s elev=40.7deg humid= 71% sunelev=-34.9deg (moon at 113.0deg phase=0.04 elev=-29.0 )
AL_20100415_003733970_391571_92742200    30 stars filter I [111658.4s - 111838.4s] expo=180s elev=41.3deg humid= 71% sunelev=-34.7deg (moon at 113.0deg phase=0.04 elev=-29.0 )
AL_20100415_025008630_391573_92742400    32 stars filter V [119612.2s - 119792.2s] expo=180s elev=59.6deg humid= 60% sunelev=-20.5deg (moon at 114.0deg phase=0.05 elev=-18.0 )
AL_20100415_025327364_391573_92742400    38 stars filter R [119811.8s - 119991.8s] expo=180s elev=59.9deg humid= 61% sunelev=-20.1deg (moon at 114.0deg phase=0.05 elev=-17.0 )
AL_20100415_025645802_391573_92742400    38 stars filter I [120011.3s - 120191.3s] expo=180s elev=60.1deg humid= 60% sunelev=-19.6deg (moon at 114.0deg phase=0.05 elev=-17.0 )
AL_20100415_223931051_391590_92744100     0 star  filter V [191039.0s - 191219.0s] expo=180s elev=21.2deg humid= 65% sunelev=-35.0deg (moon at 121.0deg phase=0.09 elev=-22.0 )
AL_20100416_220016863_391610_92746100     6 stars filter V [275021.2s - 275201.2s] expo=180s elev=14.6deg humid= 73% sunelev=-32.0deg (moon at 129.0deg phase=0.16 elev=-10.0 )
AL_20100416_220335282_391610_92746100    14 stars filter R [275220.8s - 275400.8s] expo=180s elev=15.2deg humid= 73% sunelev=-32.2deg (moon at 129.0deg phase=0.16 elev=-10.0 )
AL_20100416_220402845_391610_92746100     0 star  filter I [275418.3s - 275598.3s] expo=180s elev=15.8deg humid= 73% sunelev=-32.5deg (moon at 129.0deg phase=0.16 elev=-10.0 )
AL_20100416_231034510_391611_92746200    13 stars filter V [279240.0s - 279420.0s] expo=180s elev=27.3deg humid= 73% sunelev=-35.7deg (moon at 129.0deg phase=0.16 elev=-17.0 )
AL_20100416_231350021_391611_92746200    19 stars filter R [279435.5s - 279615.5s] expo=180s elev=27.9deg humid= 73% sunelev=-35.8deg (moon at 129.0deg phase=0.16 elev=-17.0 )
AL_20100416_231709099_391611_92746200    20 stars filter I [279633.1s - 279813.1s] expo=180s elev=28.5deg humid= 73% sunelev=-35.8deg (moon at 129.0deg phase=0.16 elev=-18.0 )
AL_20100417_001919083_391612_92746300     0 star  filter V [283424.5s - 283604.5s] expo=180s elev=39.7deg humid= 76% sunelev=-34.9deg (moon at 130.0deg phase=0.16 elev=-22.0 )
AL_20100417_013057911_391613_92746400    30 stars filter V [287663.4s - 287843.4s] expo=180s elev=51.1deg humid= 69% sunelev=-29.7deg (moon at 130.0deg phase=0.17 elev=-23.0 )
AL_20100417_013413654_391613_92746400    34 stars filter R [287858.9s - 288038.9s] expo=180s elev=51.6deg humid= 69% sunelev=-29.4deg (moon at 130.0deg phase=0.17 elev=-23.0 )
AL_20100417_013732779_391613_92746400    32 stars filter I [288056.5s - 288236.5s] expo=180s elev=52.0deg humid= 70% sunelev=-29.0deg (moon at 130.0deg phase=0.17 elev=-23.0 )
No informations from GCN notice.

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=40.181148 lat=21.694463
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.117
Assuming Rv=3.1: Av=0.387 Ar=0.312 Ai=0.226 Extinction map E(B-V) from Schlegel:

Field of View is about 69 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 100413: TAROT Calern observatory optical observations
Klotz A. (CESR-OMP), Gendre B. (IASF),
Boer M. (OHP-OAMP), Atteia J.L. (LATT-OMP) report:

We imaged the field of GRB 100413 detected by SWIFT
(trigger 419404) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 107034.5s after the GRB trigger
(XXXs after the notice). The elevation of the field increased from
27 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2010-04-13T17:33:28.370

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+107034.5s to t0+107214.5s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+107232.1s to t0+107412.1s : R > 16.2

We co-added a series of exposures:
t0+107232.1s to t0+119792.2s : 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 107034.5s 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= 40.1811 lat=+21.6945
and the galactic extinction in R band is 0.3 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

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