GRB101108_031902_ANTARES at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20101108_032536726_000001_50354600     0 star  filter C [212155946551.7s - 212155946731.7s] expo=180s elev=26.1deg humid= 75% sunelev=-31.4deg (moon at 150.0deg phase=0.14 elev=-54.0 )
AL_20101109_001330633_000001_50353700     0 star  filter C [212156021425.6s - 212156021605.6s] expo=180s elev=47.7deg humid= 88% sunelev=-60.5deg (moon at 142.0deg phase=0.20 elev=-63.0 )
AL_20101109_035206399_000001_50353400     0 star  filter C [212156034541.4s - 212156034721.4s] expo=180s elev=20.9deg humid= 82% sunelev=-26.8deg (moon at 139.0deg phase=0.21 elev=-59.0 )
AL_20101109_040326669_000001_50353700     0 star  filter C [212156035221.6s - 212156035401.6s] expo=180s elev=19.0deg humid= 81% sunelev=-24.8deg (moon at 139.0deg phase=0.21 elev=-57.0 )
AL_20101109_044854754_000001_50355000     0 star  filter C [212156037949.7s - 212156038129.7s] expo=180s elev=11.0deg humid= 82% sunelev=-16.6deg (moon at 139.0deg phase=0.22 elev=-50.0 )
AL_20101109_050010603_000001_50354700     0 star  filter C [212156038625.6s - 212156038805.6s] expo=180s elev= 8.9deg humid= 82% sunelev=-14.6deg (moon at 139.0deg phase=0.22 elev=-48.0 )
AL_20101109_051141279_000001_50354700     0 star  filter C [212156039316.3s - 212156039496.3s] expo=180s elev= 6.9deg humid= 82% sunelev=-12.5deg (moon at 139.0deg phase=0.22 elev=-46.0 )
AL_20101109_052943521_000001_50355000     0 star  filter C [212156040398.5s - 212156040578.5s] expo=180s elev= 3.7deg humid= 83% sunelev=-9.4deg (moon at 138.0deg phase=0.22 elev=-43.0 )
AL_20101109_173011115_000001_50356000     0 star  filter VN [212156083626.1s - 212156083806.1s] expo=180s elev= 0.3deg humid= 81% sunelev=-13.9deg (moon at 134.0deg phase=0.25 elev= +9.0 )
AL_20101109_173027975_000001_50356000     0 star  filter C [212156083820.9s - 212156083821.9s] expo=  1s elev= 0.5deg humid= 81% sunelev=-14.4deg (moon at 134.0deg phase=0.25 elev= +9.0 )
AL_20101109_173402906_000001_50356000     0 star  filter VN [212156083857.9s - 212156084037.9s] expo=180s elev= 0.9deg humid= 81% sunelev=-14.5deg (moon at 134.0deg phase=0.25 elev= +9.0 )
AL_20101109_173722000_000001_50356000     0 star  filter VN [212156084057.0s - 212156084237.0s] expo=180s elev= 1.4deg humid= 82% sunelev=-15.1deg (moon at 134.0deg phase=0.25 elev= +8.0 )
AL_20101109_173738797_000001_50356000     0 star  filter C [212156084251.8s - 212156084252.8s] expo=  1s elev= 1.7deg humid= 82% sunelev=-15.7deg (moon at 134.0deg phase=0.25 elev= +8.0 )
AL_20101109_174230927_000001_50356300     0 star  filter VN [212156084365.9s - 212156084545.9s] expo=180s elev= 2.3deg humid= 82% sunelev=-16.1deg (moon at 133.0deg phase=0.25 elev= +8.0 )
AL_20101109_174247538_000001_50356300     0 star  filter C [212156084561.5s - 212156084562.5s] expo=  1s elev= 2.6deg humid= 81% sunelev=-16.6deg (moon at 133.0deg phase=0.25 elev= +7.0 )
AL_20101109_174625709_000001_50356300     0 star  filter VN [212156084600.7s - 212156084780.7s] expo=180s elev= 2.9deg humid= 81% sunelev=-16.8deg (moon at 133.0deg phase=0.25 elev= +7.0 )
AL_20101109_174941835_000001_50356300     0 star  filter VN [212156084796.8s - 212156084976.8s] expo=180s elev= 3.5deg humid= 81% sunelev=-17.3deg (moon at 133.0deg phase=0.25 elev= +7.0 )
AL_20101109_174959569_000001_50356300     0 star  filter C [212156084992.6s - 212156084993.6s] expo=  1s elev= 3.8deg humid= 81% sunelev=-17.9deg (moon at 133.0deg phase=0.25 elev= +7.0 )
AL_20101109_235725597_000001_50353500     0 star  filter C [212156106860.5s - 212156107040.5s] expo=180s elev=48.1deg humid= 85% sunelev=-62.0deg (moon at 131.0deg phase=0.26 elev=-51.0 )
AL_20101110_035658021_000001_50353500     0 star  filter C [212156121233.0s - 212156121413.0s] expo=180s elev=19.4deg humid= 78% sunelev=-26.1deg (moon at 128.0deg phase=0.28 elev=-65.0 )
AL_20101110_051746631_000001_50354800     0 star  filter C [212156126081.6s - 212156126261.6s] expo=180s elev= 5.1deg humid= 79% sunelev=-11.7deg (moon at 127.0deg phase=0.28 elev=-53.0 )
AL_20101110_052918034_000001_50354800     0 star  filter C [212156126773.0s - 212156126953.0s] expo=180s elev= 3.1deg humid= 83% sunelev=-9.6deg (moon at 127.0deg phase=0.28 elev=-52.0 )
AL_20101110_172538440_000001_50356100     0 star  filter VN [212156169753.5s - 212156169933.5s] expo=180s elev= 0.2deg humid= 79% sunelev=-13.2deg (moon at 122.0deg phase=0.31 elev=+17.0 )
AL_20101110_172555362_000001_50356100     0 star  filter C [212156169949.3s - 212156169950.3s] expo=  1s elev= 0.4deg humid= 78% sunelev=-13.8deg (moon at 122.0deg phase=0.31 elev=+17.0 )
AL_20101110_172927456_000001_50356100     0 star  filter VN [212156169982.5s - 212156170162.5s] expo=180s elev= 0.8deg humid= 78% sunelev=-13.9deg (moon at 122.0deg phase=0.31 elev=+17.0 )
AL_20101110_173251003_000001_50356100     0 star  filter VN [212156170186.0s - 212156170366.0s] expo=180s elev= 1.3deg humid= 78% sunelev=-14.5deg (moon at 122.0deg phase=0.31 elev=+16.0 )
AL_20101110_173310143_000001_50356100     0 star  filter C [212156170384.1s - 212156170385.1s] expo=  1s elev= 1.6deg humid= 78% sunelev=-15.1deg (moon at 122.0deg phase=0.31 elev=+16.0 )
AL_20101111_000332557_000001_50353600     0 star  filter C [212156193627.5s - 212156193807.5s] expo=180s elev=47.8deg humid= 66% sunelev=-61.8deg (moon at 119.0deg phase=0.33 elev=-42.0 )
AL_20101111_051410746_000001_50354900     0 star  filter C [212156212265.7s - 212156212445.7s] expo=180s elev= 5.1deg humid= 37% sunelev=-12.5deg (moon at 116.0deg phase=0.35 elev=-60.0 )
AL_20101111_172207545_000001_50356200     0 star  filter VN [212156255942.5s - 212156256122.5s] expo=180s elev= 0.2deg humid= 76% sunelev=-12.8deg (moon at 110.0deg phase=0.38 elev=+24.0 )
AL_20101111_172225359_000001_50356200     0 star  filter C [212156256138.3s - 212156256139.3s] expo=  1s elev= 0.5deg humid= 76% sunelev=-13.4deg (moon at 110.0deg phase=0.38 elev=+24.0 )
AL_20101111_172603076_000001_50356200     0 star  filter VN [212156256178.0s - 212156256358.0s] expo=180s elev= 0.8deg humid= 75% sunelev=-13.5deg (moon at 110.0deg phase=0.38 elev=+24.0 )
AL_20101111_172918905_000001_50356200     0 star  filter VN [212156256373.8s - 212156256553.8s] expo=180s elev= 1.4deg humid= 73% sunelev=-14.0deg (moon at 110.0deg phase=0.38 elev=+23.0 )
AL_20101111_172935748_000001_50356200     0 star  filter C [212156256568.7s - 212156256569.7s] expo=  1s elev= 1.7deg humid= 72% sunelev=-14.6deg (moon at 110.0deg phase=0.38 elev=+23.0 )
AL_20101113_001549611_000001_50353800     0 star  filter C [212156367164.6s - 212156367344.6s] expo=180s elev=46.9deg humid= 54% sunelev=-61.3deg (moon at  96.0deg phase=0.45 elev=-23.0 )
AL_20101113_053435629_000001_50355100     0 star  filter C [212156386290.6s - 212156386470.6s] expo=180s elev= 0.3deg humid= 65% sunelev=-9.4deg (moon at  93.0deg phase=0.47 elev=-59.0 )
AL_20101113_171357216_000001_50356400     0 star  filter VN [212156428252.2s - 212156428432.2s] expo=180s elev= 0.2deg humid= 87% sunelev=-11.7deg (moon at  87.0deg phase=0.50 elev=+34.0 )
AL_20101113_171408185_000001_50356400     0 star  filter C [212156428447.3s - 212156428448.3s] expo=  1s elev= 0.5deg humid= 90% sunelev=-12.2deg (moon at  87.0deg phase=0.50 elev=+34.0 )
AL_20101115_044524137_000001_50355300     0 star  filter C [212156556139.1s - 212156556319.1s] expo=180s elev= 7.4deg humid= 83% sunelev=-18.4deg (moon at  71.0deg phase=0.59 elev=-44.0 )
AL_20101117_003251816_000001_50354100     0 star  filter C [212156713786.8s - 212156713966.8s] expo=180s elev=44.5deg humid= 80% sunelev=-60.6deg (moon at  52.0deg phase=0.70 elev=+15.0 )
AL_20101117_044754452_000001_50355400     0 star  filter C [212156729089.4s - 212156729269.4s] expo=180s elev= 5.5deg humid= 87% sunelev=-18.4deg (moon at  50.0deg phase=0.71 elev=-26.0 )
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=179.766981 lat=-43.877162
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.030
Assuming Rv=3.1: Av=0.098 Ar=0.079 Ai=0.057 Extinction map E(B-V) from Schlegel:

Field of View is about 99 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 101108: TAROT Calern observatory optical observations
Klotz A. (CESR-OMP), Gendre B. (ASDC),
Boer M. (OHP-OAMP), Atteia J.L. (LATT-OMP) report:

We imaged the field of GRB 101108 detected by XXX
(trigger XXX) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 212155946551.7s after the GRB trigger
(XXXs after the notice). The elevation of the field increased from
26 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 1858-11-17T00:00:00.000

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+212155946551.7s to t0+212155946731.7s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+212156021425.6s to t0+212156021605.6s : R > 16.2

We co-added a series of exposures:
t0+212156021425.6s to t0+212156039496.3s : R > 17.7
---- YES
We detect a new fading source in the error box given by XXX
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 212155946551.7s 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=179.7670 lat=-43.8772
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.