GRB160601_144302_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20160601_220910307_000000_23374601     7 stars filter C [26583.1s - 26763.1s] expo=180s elev=69.1deg humid= 92% sunelev=-21.4deg (moon at 105.0deg phase=0.25 elev=-35.0 )
AL_20160601_221221807_000000_23374601     5 stars filter R [26774.6s - 26954.6s] expo=180s elev=69.1deg humid= 92% sunelev=-21.6deg (moon at 105.0deg phase=0.25 elev=-35.0 )
AL_20160601_221533010_000000_23374601     5 stars filter V [26965.8s - 27145.8s] expo=180s elev=69.2deg humid= 92% sunelev=-21.8deg (moon at 105.0deg phase=0.25 elev=-34.0 )
Informations from GCN notice:
This is a GRB
Date of the alert : 2457541.11322 2016-06-01T14:43:02.208
Decoded useful notice informations.
RA(J2000.0) : 234.9355 15h39m44s5
DEC(J2000.0) : 64.5405 +64d32m25s80
Error radius : 3.6 arcsec
Error box : x=110:112 y=112:114 (pixels)

Other pages about TAROT Calern observatory observations

Sum of images.
Differential photometry.

Galactic coordinates

Galactic coordinates : lon=99.2049180626 lat=44.0714917019
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.026
Assuming Rv=3.1: Av=0.087 Ar=0.070 Ai=0.051 Extinction map E(B-V) from Schlegel:

Field of View is about 100 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 160601: TAROT Calern observatory optical observations
Klotz A., Turpin D. (IRAP-CNRS-OMP),
Boer M., Gendre B., Siellez K., Dereli H., Bardho O. (UNS-CNRS-OCA),
Atteia J.L. (IRAP-CNRS-OMP) report:

We imaged the field of GRB 160601 detected by SWIFT
(trigger 688452) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 7.38h after the GRB trigger.
The elevation of the field increased from
69 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2016-06-01T14:43:02.208

The first image is trailed with a duration of 180.0s
(see the description in Klotz et al., 2006, A&A 451, L39).
We do not detect any OT with a limiting magnitude of:
t0+26583.1s to t0+26763.1s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+26774.6s to t0+26954.6s : R > 16.2

We co-added a series of exposures:
t0+26774.6s to t0+27145.8s : R > 17.7
---- YES
We detect a new fading source in the error box given by SWIFT
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 7.38h 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= 99.2049 lat=+44.0715
and the galactic extinction in R band is 0.1 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

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