GRB110324_020313_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20110324_021437829_000001_80754601     0 star  filter C [  964.9s -  1054.9s] expo= 90s elev= 7.8deg humid= 49% sunelev=-33.2deg (moon at  25.0deg phase=0.66 elev=+20.0 )
AL_20110324_021755068_000001_80754601     0 star  filter R [ 1162.1s -  1252.1s] expo= 90s elev= 8.2deg humid= 49% sunelev=-32.7deg (moon at  25.0deg phase=0.66 elev=+20.0 )
AL_20110324_021934879_000001_80754601     0 star  filter C [ 1261.9s -  1351.9s] expo= 90s elev= 8.3deg humid= 49% sunelev=-32.5deg (moon at  25.0deg phase=0.66 elev=+20.0 )
AL_20110324_022115614_000001_80754601     0 star  filter C [ 1362.7s -  1452.7s] expo= 90s elev= 8.5deg humid= 49% sunelev=-32.3deg (moon at  25.0deg phase=0.66 elev=+20.0 )
AL_20110324_022255426_000001_80754601     0 star  filter R [ 1462.6s -  1552.6s] expo= 90s elev= 8.7deg humid= 49% sunelev=-32.0deg (moon at  25.0deg phase=0.66 elev=+20.0 )
AL_20110324_022538802_000001_80754701     0 star  filter C [ 1626.0s -  1716.0s] expo= 90s elev= 9.0deg humid= 49% sunelev=-31.7deg (moon at  25.0deg phase=0.66 elev=+20.0 )
AL_20110324_022721472_000001_80754701     0 star  filter C [ 1726.0s -  1816.0s] expo= 90s elev= 9.2deg humid= 49% sunelev=-31.4deg (moon at  25.0deg phase=0.66 elev=+20.0 )
AL_20110324_022901300_000001_80754701     0 star  filter R [ 1828.4s -  1918.4s] expo= 90s elev= 9.4deg humid= 49% sunelev=-31.2deg (moon at  25.0deg phase=0.66 elev=+21.0 )
AL_20110324_023041331_000001_80754701     0 star  filter C [ 1928.4s -  2018.4s] expo= 90s elev= 9.6deg humid= 49% sunelev=-30.9deg (moon at  25.0deg phase=0.66 elev=+21.0 )
AL_20110324_023222066_000001_80754701     0 star  filter C [ 2029.2s -  2119.2s] expo= 90s elev= 9.8deg humid= 49% sunelev=-30.7deg (moon at  25.0deg phase=0.66 elev=+21.0 )
AL_20110324_024506904_000001_80754801    12 stars filter C [ 2704.0s -  2884.0s] expo=180s elev=11.1deg humid= 53% sunelev=-29.0deg (moon at  25.0deg phase=0.66 elev=+21.0 )
AL_20110324_024817425_000001_80754801    14 stars filter R [ 2894.4s -  3074.4s] expo=180s elev=11.4deg humid= 53% sunelev=-28.6deg (moon at  25.0deg phase=0.66 elev=+21.0 )
AL_20110324_025127706_000001_80754801    19 stars filter C [ 3084.8s -  3264.8s] expo=180s elev=11.8deg humid= 53% sunelev=-28.1deg (moon at  25.0deg phase=0.66 elev=+21.0 )
AL_20110324_025438206_000001_80754801    21 stars filter C [ 3275.3s -  3455.3s] expo=180s elev=12.1deg humid= 52% sunelev=-27.6deg (moon at  25.0deg phase=0.66 elev=+21.0 )
AL_20110324_025748949_000001_80754801    19 stars filter R [ 3466.0s -  3646.0s] expo=180s elev=12.4deg humid= 52% sunelev=-27.1deg (moon at  25.0deg phase=0.66 elev=+22.0 )
AL_20110324_030208121_000001_80754901    28 stars filter C [ 3725.2s -  3905.2s] expo=180s elev=12.8deg humid= 52% sunelev=-26.4deg (moon at  24.0deg phase=0.66 elev=+22.0 )
AL_20110324_030517933_000001_80754901    35 stars filter C [ 3914.9s -  4094.9s] expo=180s elev=13.1deg humid= 52% sunelev=-25.9deg (moon at  24.0deg phase=0.66 elev=+22.0 )
AL_20110324_030831070_000001_80754901    22 stars filter R [ 4105.4s -  4285.4s] expo=180s elev=13.4deg humid= 53% sunelev=-25.4deg (moon at  24.0deg phase=0.66 elev=+22.0 )
AL_20110324_031141336_000001_80754901    34 stars filter C [ 4298.5s -  4478.5s] expo=180s elev=13.7deg humid= 53% sunelev=-24.9deg (moon at  24.0deg phase=0.66 elev=+22.0 )
AL_20110324_031451851_000001_80754901    37 stars filter C [ 4488.9s -  4668.9s] expo=180s elev=14.0deg humid= 53% sunelev=-24.4deg (moon at  24.0deg phase=0.66 elev=+22.0 )
AL_20110324_031759965_000001_80754901    26 stars filter R [ 4679.6s -  4859.6s] expo=180s elev=14.3deg humid= 54% sunelev=-23.9deg (moon at  24.0deg phase=0.66 elev=+22.0 )
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=3.271443 lat=-0.346665
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=1.338
Assuming Rv=3.1: Av=4.436 Ar=3.577 Ai=2.596 Extinction map E(B-V) from Schlegel:

Field of View is about 55 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 110324: 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 110324 detected by SWIFT
(trigger 449907) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 964.9s after the GRB trigger
(XXXs after the notice). The elevation of the field increased from
7 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2011-03-24T01:56:57.408

The first image is trailed with a duration of 90.0s
(see the description in Klotz et al., 2006, A&A 451, L39).
We do not detect any OT with a limiting magnitude of:
t0+964.9s to t0+1054.9s : R > 15.1

The second image is 90.0s exposure in tracking mode:
t0+1162.1s to t0+1252.1s : R > 16.2

We co-added a series of exposures:
t0+1162.1s to t0+1816.0s : 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 964.9s 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=  3.2714 lat= -0.3467
and the galactic extinction in R band is 3.6 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.