GRB150110_624606_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20150111_033211888_000003_33652701    14 stars filter C [92504680.6s - 92504860.6s] expo=180s elev= 4.7deg humid= 46% sunelev=-37.6deg (moon at 110.0deg phase=0.64 elev=+45.0 )
AL_20150111_033529341_000003_33652701    21 stars filter R [92504878.1s - 92505058.1s] expo=180s elev= 5.1deg humid= 46% sunelev=-37.0deg (moon at 110.0deg phase=0.64 elev=+45.0 )
AL_20150111_033842210_000003_33652701    11 stars filter V [92505070.9s - 92505250.9s] expo=180s elev= 5.5deg humid= 47% sunelev=-36.5deg (moon at 110.0deg phase=0.64 elev=+45.0 )
AL_20150111_035637570_000003_33652801    34 stars filter C [92506146.3s - 92506326.3s] expo=180s elev= 8.0deg humid= 47% sunelev=-33.2deg (moon at 110.0deg phase=0.63 elev=+45.0 )
AL_20150111_035949648_000003_33652801    32 stars filter R [92506338.5s - 92506518.5s] expo=180s elev= 8.4deg humid= 48% sunelev=-32.6deg (moon at 110.0deg phase=0.63 elev=+45.0 )
AL_20150111_040302476_000003_33652801    28 stars filter V [92506531.3s - 92506711.3s] expo=180s elev= 8.9deg humid= 48% sunelev=-32.1deg (moon at 110.0deg phase=0.63 elev=+45.0 )
AL_20150111_042105251_000003_33652901    35 stars filter C [92507613.8s - 92507793.8s] expo=180s elev=11.5deg humid= 48% sunelev=-28.8deg (moon at 110.0deg phase=0.63 elev=+45.0 )
AL_20150111_042417891_000003_33652901    35 stars filter R [92507806.5s - 92507986.5s] expo=180s elev=12.0deg humid= 49% sunelev=-28.2deg (moon at 110.0deg phase=0.63 elev=+45.0 )
AL_20150111_042732262_000003_33652901    31 stars filter V [92508000.9s - 92508180.9s] expo=180s elev=12.5deg humid= 49% sunelev=-27.6deg (moon at 110.0deg phase=0.63 elev=+45.0 )
AL_20150111_044534232_000003_33653001    39 stars filter C [92509082.8s - 92509262.8s] expo=180s elev=15.2deg humid= 50% sunelev=-24.4deg (moon at 109.0deg phase=0.63 elev=+44.0 )
AL_20150111_044846644_000003_33653001    40 stars filter R [92509275.4s - 92509455.4s] expo=180s elev=15.7deg humid= 51% sunelev=-23.8deg (moon at 109.0deg phase=0.63 elev=+43.0 )
AL_20150111_045159644_000003_33653001    34 stars filter V [92509468.4s - 92509648.4s] expo=180s elev=16.2deg humid= 52% sunelev=-23.3deg (moon at 109.0deg phase=0.63 elev=+43.0 )
AL_20150111_051008175_000003_33653101    45 stars filter C [92510556.9s - 92510736.9s] expo=180s elev=19.1deg humid= 52% sunelev=-20.0deg (moon at 109.0deg phase=0.63 elev=+42.0 )
AL_20150111_051321988_000003_33653101    41 stars filter R [92510750.6s - 92510930.6s] expo=180s elev=19.6deg humid= 52% sunelev=-19.5deg (moon at 109.0deg phase=0.63 elev=+42.0 )
AL_20150111_051634175_000003_33653101    36 stars filter V [92510942.8s - 92511122.8s] expo=180s elev=20.1deg humid= 53% sunelev=-18.9deg (moon at 109.0deg phase=0.63 elev=+41.0 )
AL_20150111_053431049_000003_33653201     6 stars filter C [92512019.6s - 92512199.6s] expo=180s elev=23.1deg humid= 53% sunelev=-15.8deg (moon at 109.0deg phase=0.63 elev=+40.0 )
AL_20150111_053743706_000003_33653201     7 stars filter R [92512212.3s - 92512392.3s] expo=180s elev=23.6deg humid= 53% sunelev=-15.2deg (moon at 109.0deg phase=0.63 elev=+39.0 )
AL_20150111_054056784_000003_33653201    13 stars filter V [92512405.3s - 92512585.3s] expo=180s elev=24.1deg humid= 53% sunelev=-14.6deg (moon at 109.0deg phase=0.63 elev=+39.0 )
Informations from GCN notice:
This is not a GRB (a retractation has been edited)
Date of GRB : 2455962.9912571758 2012-02-05T11:47:24.620
Date of notice : 2455962.9915046296 2012-02-05T11:47:46.000
Refined position : no
RA(J2000.0) : 40.1 02h40m24s0
DEC(J2000.0) : 61.22 +61d13m12s00
Error box : x=-85628:-85518 y=157736:157846 (pixels)

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=64.8589001112 lat=9.21804271781
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.193
Assuming Rv=3.1: Av=0.641 Ar=0.517 Ai=0.375 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 150110: 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 150110 detected by SWIFT
(trigger 513505) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 92504680.6s after the GRB trigger
(92504659.4s after the notice). The elevation of the field increased from
4 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2012-02-05T11:47:24.864

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+92504680.6s to t0+92504860.6s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+92504878.1s to t0+92505058.1s : R > 16.2

We co-added a series of exposures:
t0+92504878.1s to t0+92507793.8s : 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 92504680.6s 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= 64.8589 lat= +9.2180
and the galactic extinction in R band is 0.5 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.