GRB13_20170314_G277583 at TAROT Calern observatory

TAROT Calern observatory log of images

IM_20170314_205636335_000000_52958801    62 stars filter C [212356284871.2s - 212356284991.2s] expo=120s elev=55.7deg humid= 72% sunelev=-34.6deg (moon at 104.0deg phase=0.85 elev=+12.0 )
IM_20170314_205847366_000000_52958801    60 stars filter C [212356285002.2s - 212356285122.2s] expo=120s elev=55.3deg humid= 72% sunelev=-35.0deg (moon at 104.0deg phase=0.85 elev=+12.0 )
IM_20170314_230216155_000000_52958901    61 stars filter C [212356292410.9s - 212356292530.9s] expo=120s elev=33.3deg humid= 73% sunelev=-47.6deg (moon at 105.0deg phase=0.84 elev=+30.0 )
IM_20170314_230427599_000000_52958901    63 stars filter C [212356292542.4s - 212356292662.4s] expo=120s elev=32.9deg humid= 74% sunelev=-47.7deg (moon at 105.0deg phase=0.84 elev=+30.0 )
IM_20170315_205635957_000000_52967501    71 stars filter C [212356371270.7s - 212356371390.7s] expo=120s elev=55.0deg humid= 69% sunelev=-34.4deg (moon at 116.0deg phase=0.79 elev= +2.0 )
IM_20170315_205847133_000000_52967501    77 stars filter C [212356371401.9s - 212356371521.9s] expo=120s elev=54.7deg humid= 69% sunelev=-34.7deg (moon at 116.0deg phase=0.79 elev= +2.0 )
IM_20170315_230215840_000000_52967601    67 stars filter C [212356378810.7s - 212356378930.7s] expo=120s elev=32.6deg humid= 68% sunelev=-47.2deg (moon at 117.0deg phase=0.78 elev=+21.0 )
IM_20170315_230426590_000000_52967601    68 stars filter C [212356378941.4s - 212356379061.4s] expo=120s elev=32.2deg humid= 68% sunelev=-47.3deg (moon at 117.0deg 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=187.798507056 lat=6.85275488767
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.378
Assuming Rv=3.1: Av=1.253 Ar=1.010 Ai=0.733 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 13_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 13_201 detected by XXX
(trigger XXX) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 212356284871.2s 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+212356284871.2s to t0+212356284991.2s : R > 15.1

The second image is 120.0s exposure in tracking mode:
t0+212356285002.2s to t0+212356285122.2s : R > 16.2

We co-added a series of exposures:
t0+212356285002.2s to t0+212356378930.7s : 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 212356284871.2s 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=187.7985 lat= +6.8528
and the galactic extinction in R band is 1.0 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.