GRB120213_514767_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20120213_004806581_000002_46082501    16 stars filter C [651546.7s - 651636.7s] expo= 90s elev=23.6deg humid= 74% sunelev=-57.1deg (moon at 105.0deg phase=0.62 elev=+16.0 )
AL_20120213_004951706_000002_46082501    17 stars filter C [651651.8s - 651741.8s] expo= 90s elev=23.7deg humid= 74% sunelev=-57.0deg (moon at 105.0deg phase=0.62 elev=+16.0 )
AL_20120213_005132252_000002_46082501    24 stars filter C [651752.3s - 651842.3s] expo= 90s elev=23.8deg humid= 74% sunelev=-56.8deg (moon at 105.0deg phase=0.62 elev=+16.0 )
AL_20120213_012002564_000002_46082901    28 stars filter C [653372.6s - 653552.6s] expo=180s elev=25.4deg humid= 60% sunelev=-54.0deg (moon at 105.0deg phase=0.62 elev=+20.0 )
AL_20120213_012317267_000002_46082901    29 stars filter C [653567.3s - 653747.3s] expo=180s elev=25.6deg humid= 58% sunelev=-53.6deg (moon at 105.0deg phase=0.62 elev=+20.0 )
AL_20120213_012627720_000002_46082901    23 stars filter R [653757.8s - 653937.8s] expo=180s elev=25.8deg humid= 58% sunelev=-53.2deg (moon at 105.0deg phase=0.62 elev=+20.0 )
Informations from GCN notice:
This is not a GRB (a retractation has been edited)
Date of GRB : 2455962.9912571758 2012-02-05T11:47:24.619
Date of notice : 2455962.9915046296 2012-02-05T11:47:45.999
Refined position : no
RA(J2000.0) : 40.100000 02h40m24s0
DEC(J2000.0) : 61.220000 +61d13m12s00
Error box : x=-38606:-38496 y=35662:35771 (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=98.442685 lat=17.399415
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.214
Assuming Rv=3.1: Av=0.709 Ar=0.572 Ai=0.415
extmap.fit: Extinction map E(B-V) from Schlegel:

Field of View is about 66 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 120213: TAROT Calern observatory optical observations
----------------------------------------------------------------------
Klotz A. (IRAP-CNRS-OMP), Gendre B. (ASDC/INAF-OAR),
Boer M. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report:

We imaged the field of GRB 120213 detected by SWIFT
(trigger 513505) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 651546.7s after the GRB trigger
(651525.5s after the notice). The elevation of the field increased 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 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+651546.7s to t0+651636.7s : R > 15.1

The second image is 90.0s exposure in tracking mode:
t0+651651.8s to t0+651741.8s : R > 16.2

We co-added a series of exposures:
t0+651651.8s to t0+653937.8s : 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 651546.7s 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= 98.4427 lat=+17.3994
and the galactic extinction in R band is 0.6 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.
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