GRB100117_210725_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20100118_194421511_301216_71546300     3 stars filter V [81481.8s - 81661.8s] expo=180s elev=26.4deg humid= 56% sunelev=-36.1deg (moon at  35.0deg phase=0.21 elev= -1.0 )
AL_20100118_194739847_301216_71546300     3 stars filter R [81680.2s - 81860.2s] expo=180s elev=25.9deg humid= 56% sunelev=-36.6deg (moon at  35.0deg phase=0.21 elev= -1.0 )
AL_20100118_195054831_301216_71546300     3 stars filter I [81875.1s - 82055.1s] expo=180s elev=25.4deg humid= 55% sunelev=-37.2deg (moon at  35.0deg phase=0.21 elev= -2.0 )
AL_20100118_205255533_301217_71546400     3 stars filter V [85595.9s - 85775.9s] expo=180s elev=15.1deg humid= 61% sunelev=-48.1deg (moon at  34.0deg phase=0.21 elev=-12.0 )
AL_20100118_205613377_301217_71546400     3 stars filter R [85793.6s - 85973.6s] expo=180s elev=14.6deg humid= 61% sunelev=-48.7deg (moon at  34.0deg phase=0.21 elev=-13.0 )
AL_20100118_205931352_301217_71546400     3 stars filter I [85991.7s - 86171.7s] expo=180s elev=14.0deg humid= 61% sunelev=-49.2deg (moon at  34.0deg phase=0.21 elev=-14.0 )
AL_20100118_220256752_301218_71546500     1 star  filter V [89796.9s - 89976.9s] expo=180s elev= 2.9deg humid= 75% sunelev=-59.0deg (moon at  34.0deg phase=0.21 elev=-24.0 )
AL_20100118_220615159_301218_71546500     0 star  filter R [89996.0s - 90176.0s] expo=180s elev= 2.3deg humid= 76% sunelev=-59.5deg (moon at  34.0deg phase=0.21 elev=-25.0 )
AL_20100118_220930278_301218_71546500     0 star  filter I [90190.6s - 90370.6s] expo=180s elev= 1.8deg humid= 74% sunelev=-59.9deg (moon at  34.0deg phase=0.21 elev=-25.0 )
AL_20100119_190138502_301236_71548300     1 star  filter V [165318.7s - 165498.7s] expo=180s elev=32.1deg humid= 61% sunelev=-28.2deg (moon at  24.0deg phase=0.27 elev=+16.0 )
AL_20100119_190453866_301236_71548300     1 star  filter R [165514.2s - 165694.2s] expo=180s elev=31.7deg humid= 61% sunelev=-28.7deg (moon at  24.0deg phase=0.27 elev=+16.0 )
AL_20100119_190809882_301236_71548300     1 star  filter I [165710.2s - 165890.2s] expo=180s elev=31.2deg humid= 62% sunelev=-29.3deg (moon at  24.0deg phase=0.27 elev=+15.0 )
AL_20100119_201050141_301237_71548400     1 star  filter V [169470.3s - 169650.3s] expo=180s elev=21.6deg humid= 66% sunelev=-40.6deg (moon at  24.0deg phase=0.27 elev= +4.0 )
AL_20100119_201406538_301237_71548400     2 stars filter R [169666.8s - 169846.8s] expo=180s elev=21.0deg humid= 66% sunelev=-41.2deg (moon at  24.0deg phase=0.27 elev= +4.0 )
AL_20100119_201725772_301237_71548400     1 star  filter I [169866.1s - 170046.1s] expo=180s elev=20.5deg humid= 66% sunelev=-41.8deg (moon at  24.0deg phase=0.27 elev= +3.0 )
AL_20100119_212055671_301238_71548500     1 star  filter V [173676.0s - 173856.0s] expo=180s elev= 9.6deg humid= 59% sunelev=-52.5deg (moon at  23.0deg phase=0.27 elev= -7.0 )
AL_20100119_212414394_301238_71548500     1 star  filter R [173874.7s - 174054.7s] expo=180s elev= 9.0deg humid= 59% sunelev=-53.1deg (moon at  23.0deg phase=0.27 elev= -7.0 )
AL_20100119_212729628_301238_71548500     8 stars filter I [174069.9s - 174249.9s] expo=180s elev= 8.4deg humid= 59% sunelev=-53.6deg (moon at  23.0deg phase=0.27 elev= -8.0 )
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=119.226325 lat=-64.420002
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.033
Assuming Rv=3.1: Av=0.110 Ar=0.089 Ai=0.064
extmap.fit: Extinction map E(B-V) from Schlegel:

Field of View is about 176 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 100117: 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 100117 detected by SWIFT
(trigger 382941) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 81481.8s after the GRB trigger
(XXXs after the notice). The elevation of the field decreased from
26 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2010-01-17T21:06:19.510

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+81481.8s to t0+81661.8s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+81680.2s to t0+81860.2s : R > 16.2

We co-added a series of exposures:
t0+81680.2s to t0+89976.9s : 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 81481.8s 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=119.2263 lat=-64.4200
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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