GRB32_20170314_G277583 at TAROT Calern observatory

TAROT Calern observatory log of images

IM_20170314_222825185_000000_52964901    32 stars filter C [212356290380.0s - 212356290500.0s] expo=120s elev=52.5deg humid= 74% sunelev=-45.4deg (moon at  92.0deg phase=0.85 elev=+26.0 )
IM_20170314_223035685_000000_52964901    31 stars filter C [212356290510.5s - 212356290630.5s] expo=120s elev=52.1deg humid= 74% sunelev=-45.6deg (moon at  92.0deg phase=0.85 elev=+26.0 )
IM_20170315_003405146_000000_52965001    31 stars filter C [212356297919.9s - 212356298039.9s] expo=120s elev=29.9deg humid= 73% sunelev=-46.9deg (moon at  92.0deg phase=0.84 elev=+38.0 )
IM_20170315_003615866_000000_52965001    30 stars filter C [212356298050.7s - 212356298170.7s] expo=120s elev=29.5deg humid= 72% sunelev=-46.8deg (moon at  92.0deg phase=0.84 elev=+39.0 )
IM_20170315_222824894_000000_52973601    36 stars filter C [212356376779.7s - 212356376899.7s] expo=120s elev=51.8deg humid= 69% sunelev=-45.0deg (moon at 104.0deg phase=0.78 elev=+16.0 )
IM_20170315_223037048_000000_52973601    38 stars filter C [212356376911.9s - 212356377031.9s] expo=120s elev=51.4deg humid= 69% sunelev=-45.2deg (moon at 104.0deg phase=0.78 elev=+17.0 )
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=189.338729921 lat=20.559768773
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.054
Assuming Rv=3.1: Av=0.178 Ar=0.144 Ai=0.104
extmap.fit: Extinction map E(B-V) from Schlegel:

Field of View is about 68 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 32_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 32_201 detected by XXX
(trigger XXX) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 212356290380.0s after the GRB trigger
(XXXs after the notice). The elevation of the field decreased from
52 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+212356290380.0s to t0+212356290500.0s : R > 15.1

The second image is 120.0s exposure in tracking mode:
t0+212356290510.5s to t0+212356290630.5s : R > 16.2

We co-added a series of exposures:
t0+212356290510.5s to t0+212356377031.9s : 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 212356290380.0s 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=189.3387 lat=+20.5598
and the galactic extinction in R band is 0.1 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.
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