GRB11_20170314_G277583 at TAROT Calern observatory

TAROT Calern observatory log of images

IM_20170314_204655875_000000_52958001    75 stars filter C [212356284290.6s - 212356284410.6s] expo=120s elev=56.1deg humid= 73% sunelev=-33.2deg (moon at 104.0deg phase=0.85 elev=+10.0 )
IM_20170314_204907266_000000_52958001    74 stars filter C [212356284422.1s - 212356284542.1s] expo=120s elev=55.7deg humid= 73% sunelev=-33.5deg (moon at 104.0deg phase=0.85 elev=+11.0 )
IM_20170314_225235645_000000_52958101    60 stars filter C [212356291830.4s - 212356291950.4s] expo=120s elev=34.0deg humid= 71% sunelev=-47.1deg (moon at 105.0deg phase=0.84 elev=+29.0 )
IM_20170314_225446155_000000_52958101    63 stars filter C [212356291960.9s - 212356292080.9s] expo=120s elev=33.6deg humid= 72% sunelev=-47.2deg (moon at 105.0deg phase=0.84 elev=+29.0 )
IM_20170315_204656083_000000_52966701    81 stars filter C [212356370690.9s - 212356370810.9s] expo=120s elev=55.4deg humid= 66% sunelev=-32.9deg (moon at 116.0deg phase=0.79 elev= +0.0 )
IM_20170315_204907285_000000_52966701    80 stars filter C [212356370822.1s - 212356370942.1s] expo=120s elev=55.1deg humid= 67% sunelev=-33.3deg (moon at 116.0deg phase=0.79 elev= +1.0 )
IM_20170315_225236033_000000_52966801    68 stars filter C [212356378230.8s - 212356378350.8s] expo=120s elev=33.2deg humid= 71% sunelev=-46.7deg (moon at 117.0deg phase=0.78 elev=+20.0 )
IM_20170315_225446751_000000_52966801    71 stars filter C [212356378361.6s - 212356378481.6s] expo=120s elev=32.8deg humid= 70% sunelev=-46.8deg (moon at 117.0deg phase=0.78 elev=+20.0 )
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=189.721058656 lat=6.10648253061
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.258
Assuming Rv=3.1: Av=0.856 Ar=0.690 Ai=0.501 Extinction map E(B-V) from Schlegel:

Field of View is about 58 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 11_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 11_201 detected by XXX
(trigger XXX) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 212356284290.6s after the GRB trigger
(XXXs after the notice). The elevation of the field decreased from
56 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+212356284290.6s to t0+212356284410.6s : R > 15.1

The second image is 120.0s exposure in tracking mode:
t0+212356284422.1s to t0+212356284542.1s : R > 16.2

We co-added a series of exposures:
t0+212356284422.1s to t0+212356378350.8s : 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 212356284290.6s 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=189.7211 lat= +6.1065
and the galactic extinction in R band is 0.7 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

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