GRB14_20170314_G277583 at TAROT Calern observatory

TAROT Calern observatory log of images

IM_20170314_210126179_000000_52959201    70 stars filter C [212356285161.0s - 212356285281.0s] expo=120s elev=56.0deg humid= 72% sunelev=-35.3deg (moon at 102.0deg phase=0.85 elev=+13.0 )
IM_20170314_210336831_000000_52959201    82 stars filter C [212356285291.7s - 212356285411.7s] expo=120s elev=55.6deg humid= 71% sunelev=-35.6deg (moon at 102.0deg phase=0.85 elev=+13.0 )
IM_20170314_230705661_000000_52959301    77 stars filter C [212356292700.5s - 212356292820.5s] expo=120s elev=33.7deg humid= 74% sunelev=-47.8deg (moon at 102.0deg phase=0.84 elev=+31.0 )
IM_20170314_230916427_000000_52959301    65 stars filter C [212356292831.2s - 212356292951.2s] expo=120s elev=33.3deg humid= 74% sunelev=-47.9deg (moon at 102.0deg phase=0.84 elev=+31.0 )
IM_20170315_210126180_000000_52967901    89 stars filter C [212356371561.0s - 212356371681.0s] expo=120s elev=55.3deg humid= 70% sunelev=-35.1deg (moon at 114.0deg phase=0.79 elev= +3.0 )
IM_20170315_210337367_000000_52967901    84 stars filter C [212356371692.2s - 212356371812.2s] expo=120s elev=54.9deg humid= 70% sunelev=-35.4deg (moon at 114.0deg phase=0.79 elev= +3.0 )
IM_20170315_230705262_000000_52968001    87 stars filter C [212356379100.0s - 212356379220.0s] expo=120s elev=33.0deg humid= 68% sunelev=-47.4deg (moon at 115.0deg phase=0.78 elev=+22.0 )
IM_20170315_230916668_000000_52968001    84 stars filter C [212356379231.5s - 212356379351.5s] expo=120s elev=32.6deg humid= 69% sunelev=-47.5deg (moon at 115.0deg phase=0.78 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=189.753847945 lat=8.53150862205
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.159
Assuming Rv=3.1: Av=0.526 Ar=0.424 Ai=0.308 Extinction map E(B-V) from Schlegel:

Field of View is about 60 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 14_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 14_201 detected by XXX
(trigger XXX) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 212356285161.0s after the GRB trigger
(XXXs after the notice). The elevation of the field decreased from
55 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+212356285161.0s to t0+212356285281.0s : R > 15.1

The second image is 120.0s exposure in tracking mode:
t0+212356285291.7s to t0+212356285411.7s : R > 16.2

We co-added a series of exposures:
t0+212356285291.7s to t0+212356379220.0s : 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 212356285161.0s 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=189.7538 lat= +8.5315
and the galactic extinction in R band is 0.4 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.