GRB12_20170314_G277583 at TAROT Calern observatory

TAROT Calern observatory log of images

IM_20170314_205145882_000000_52958401    80 stars filter C [212356284580.7s - 212356284700.7s] expo=120s elev=57.2deg humid= 73% sunelev=-33.9deg (moon at 105.0deg phase=0.85 elev=+11.0 )
IM_20170314_205356445_000000_52958401    68 stars filter C [212356284711.2s - 212356284831.2s] expo=120s elev=56.8deg humid= 73% sunelev=-34.3deg (moon at 105.0deg phase=0.85 elev=+11.0 )
IM_20170314_225726139_000000_52958501    72 stars filter C [212356292120.9s - 212356292240.9s] expo=120s elev=34.7deg humid= 72% sunelev=-47.3deg (moon at 106.0deg phase=0.84 elev=+30.0 )
IM_20170314_225937545_000000_52958501    61 stars filter C [212356292252.3s - 212356292372.3s] expo=120s elev=34.3deg humid= 73% sunelev=-47.4deg (moon at 106.0deg phase=0.84 elev=+30.0 )
IM_20170315_205146363_000000_52967101    90 stars filter C [212356370981.1s - 212356371101.1s] expo=120s elev=56.5deg humid= 67% sunelev=-33.7deg (moon at 117.0deg phase=0.79 elev= +1.0 )
IM_20170315_205357332_000000_52967101    82 stars filter C [212356371112.1s - 212356371232.1s] expo=120s elev=56.1deg humid= 68% sunelev=-34.0deg (moon at 117.0deg phase=0.79 elev= +1.0 )
IM_20170315_225725751_000000_52967201    73 stars filter C [212356378520.6s - 212356378640.6s] expo=120s elev=34.0deg humid= 69% sunelev=-46.9deg (moon at 118.0deg phase=0.78 elev=+21.0 )
IM_20170315_225936371_000000_52967201    80 stars filter C [212356378651.1s - 212356378771.1s] expo=120s elev=33.6deg humid= 69% sunelev=-47.1deg (moon at 118.0deg phase=0.78 elev=+21.0 )
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=184.99443376 lat=6.90462264858
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.277
Assuming Rv=3.1: Av=0.917 Ar=0.739 Ai=0.536 Extinction map E(B-V) from Schlegel:

Field of View is about 59 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 12_201: TAROT Calern observatory optical observations
Klotz A., Turpin D., Atteia J.L. (CNRS-OMP-IRAP),
Boer, M., Laugier, R. (CNRS-ARTEMIS),
Gendre B. (UVI - Etelman Obs.) report:

We imaged the field of GRB 12_201 detected by XXX
(trigger XXX) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 212356284580.7s after the GRB trigger
(XXXs after the notice). The elevation of the field decreased from
57 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 120.0s
(see the description in Klotz et al., 2006, A&A 451, L39).
We do not detect any OT with a limiting magnitude of:
t0+212356284580.7s to t0+212356284700.7s : R > 15.1

The second image is 120.0s exposure in tracking mode:
t0+212356284711.2s to t0+212356284831.2s : R > 16.2

We co-added a series of exposures:
t0+212356284711.2s to t0+212356378640.6s : 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 212356284580.7s 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=184.9944 lat= +6.9046
and the galactic extinction in R band is 0.7 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.