GRB140610_601259_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20140610_202255081_000003_15473601     0 star  filter C [73989145.1s - 73989325.1s] expo=180s elev=13.5deg humid= 69% sunelev=-10.1deg (moon at  61.0deg phase=0.83 elev=+28.0 )
AL_20140610_202603040_000003_15473601     0 star  filter C [73989333.1s - 73989513.1s] expo=180s elev=14.1deg humid= 69% sunelev=-10.5deg (moon at  61.0deg phase=0.83 elev=+28.0 )
AL_20140610_202911181_000003_15473601     0 star  filter R [73989521.3s - 73989701.3s] expo=180s elev=14.7deg humid= 69% sunelev=-10.9deg (moon at  61.0deg phase=0.83 elev=+28.0 )
AL_20140610_203251868_000003_15473701     0 star  filter C [73989742.0s - 73989922.0s] expo=180s elev=15.3deg humid= 69% sunelev=-11.4deg (moon at  61.0deg phase=0.83 elev=+28.0 )
AL_20140610_203559888_000003_15473701     0 star  filter C [73989929.9s - 73990109.9s] expo=180s elev=15.9deg humid= 69% sunelev=-11.7deg (moon at  61.0deg phase=0.83 elev=+28.0 )
AL_20140610_203908059_000003_15473701     0 star  filter R [73990118.1s - 73990298.1s] expo=180s elev=16.4deg humid= 69% sunelev=-12.1deg (moon at  61.0deg phase=0.83 elev=+28.0 )
AL_20140610_204237169_000003_15473801     0 star  filter C [73990327.2s - 73990507.2s] expo=180s elev=17.0deg humid= 69% sunelev=-12.5deg (moon at  61.0deg phase=0.83 elev=+28.0 )
AL_20140610_204545144_000003_15473801    40 stars filter C [73990515.2s - 73990695.2s] expo=180s elev=17.6deg humid= 69% sunelev=-12.9deg (moon at  61.0deg phase=0.83 elev=+29.0 )
AL_20140610_204853097_000003_15473801    55 stars filter R [73990703.1s - 73990883.1s] expo=180s elev=18.1deg humid= 68% sunelev=-13.2deg (moon at  61.0deg phase=0.83 elev=+29.0 )
AL_20140610_210628998_000003_15473901    53 stars filter C [73991759.0s - 73991939.0s] expo=180s elev=21.2deg humid= 69% sunelev=-15.1deg (moon at  61.0deg phase=0.83 elev=+29.0 )
AL_20140610_210936873_000003_15473901    58 stars filter R [73991947.0s - 73992127.0s] expo=180s elev=21.8deg humid= 70% sunelev=-15.5deg (moon at  61.0deg phase=0.83 elev=+29.0 )
AL_20140610_211244419_000003_15473901    61 stars filter V [73992134.5s - 73992314.5s] expo=180s elev=22.3deg humid= 70% sunelev=-15.8deg (moon at  61.0deg phase=0.83 elev=+29.0 )
AL_20140610_213053315_000003_15474001    58 stars filter C [73993223.4s - 73993403.4s] expo=180s elev=25.4deg humid= 69% sunelev=-17.5deg (moon at  61.0deg phase=0.83 elev=+29.0 )
AL_20140610_213401268_000003_15474001    63 stars filter R [73993411.4s - 73993591.4s] expo=180s elev=26.0deg humid= 69% sunelev=-17.8deg (moon at  61.0deg phase=0.83 elev=+29.0 )
AL_20140610_213708792_000003_15474001    72 stars filter V [73993598.9s - 73993778.9s] expo=180s elev=26.5deg humid= 68% sunelev=-18.0deg (moon at  61.0deg phase=0.83 elev=+29.0 )
AL_20140610_221950904_000003_15474201    61 stars filter C [73996161.0s - 73996341.0s] expo=180s elev=33.4deg humid= 67% sunelev=-21.1deg (moon at  61.0deg phase=0.83 elev=+28.0 )
AL_20140610_222259607_000003_15474201    79 stars filter R [73996349.6s - 73996529.6s] expo=180s elev=33.9deg humid= 67% sunelev=-21.2deg (moon at  61.0deg phase=0.83 elev=+28.0 )
AL_20140610_222608013_000003_15474201    77 stars filter V [73996538.1s - 73996718.1s] expo=180s elev=34.4deg humid= 67% sunelev=-21.4deg (moon at  61.0deg phase=0.83 elev=+28.0 )
AL_20140610_224424159_000003_15474301    63 stars filter C [73997634.2s - 73997814.2s] expo=180s elev=37.1deg humid= 66% sunelev=-22.2deg (moon at  61.0deg phase=0.84 elev=+27.0 )
AL_20140610_224732072_000003_15474301    93 stars filter R [73997822.2s - 73998002.2s] expo=180s elev=37.5deg humid= 66% sunelev=-22.4deg (moon at  61.0deg phase=0.84 elev=+26.0 )
AL_20140610_225039556_000003_15474301    70 stars filter V [73998009.6s - 73998189.6s] expo=180s elev=38.0deg humid= 66% sunelev=-22.5deg (moon at  61.0deg phase=0.84 elev=+26.0 )
AL_20140610_230852283_000003_15474401    69 stars filter C [73999102.3s - 73999282.3s] expo=180s elev=40.4deg humid= 63% sunelev=-23.0deg (moon at  60.0deg phase=0.84 elev=+25.0 )
AL_20140610_231200502_000003_15474401    90 stars filter R [73999290.5s - 73999470.5s] expo=180s elev=40.9deg humid= 63% sunelev=-23.0deg (moon at  60.0deg phase=0.84 elev=+25.0 )
AL_20140610_231508845_000003_15474401    73 stars filter V [73999479.0s - 73999659.0s] expo=180s elev=41.3deg humid= 62% sunelev=-23.1deg (moon at  60.0deg phase=0.84 elev=+24.0 )
AL_20140610_233315432_000003_15474501    80 stars filter C [74000565.5s - 74000745.5s] expo=180s elev=43.4deg humid= 62% sunelev=-23.2deg (moon at  60.0deg phase=0.84 elev=+23.0 )
AL_20140610_233623354_000003_15474501    89 stars filter R [74000753.4s - 74000933.4s] expo=180s elev=43.8deg humid= 63% sunelev=-23.2deg (moon at  60.0deg phase=0.84 elev=+22.0 )
AL_20140610_233931340_000003_15474501    77 stars filter V [74000941.4s - 74001121.4s] expo=180s elev=44.1deg humid= 63% sunelev=-23.2deg (moon at  60.0deg phase=0.84 elev=+22.0 )
AL_20140610_235749175_000003_15474601    97 stars filter C [74002039.2s - 74002219.2s] expo=180s elev=46.0deg humid= 65% sunelev=-23.0deg (moon at  60.0deg phase=0.84 elev=+20.0 )
AL_20140611_000057382_000003_15474601    97 stars filter R [74002227.4s - 74002407.4s] expo=180s elev=46.3deg humid= 65% sunelev=-22.9deg (moon at  60.0deg phase=0.84 elev=+20.0 )
AL_20140611_000405523_000003_15474601    74 stars filter V [74002415.6s - 74002595.6s] expo=180s elev=46.6deg humid= 65% sunelev=-22.8deg (moon at  60.0deg phase=0.84 elev=+20.0 )
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=220796:220905 y=-444427:-444318 (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=37.9599293794 lat=-1.23766478138
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=1.851
Assuming Rv=3.1: Av=6.137 Ar=4.948 Ai=3.591 Extinction map E(B-V) from Schlegel:

Field of View is about 55 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 140610: TAROT Calern observatory optical observations
Klotz A. (IRAP-CNRS-OMP), Gendre B. (IRAP-CNRS-OMP),
Boer M., Siellez K., Dereli H., Bardho O. (UNS-CNRS-OCA),
Atteia J.L. (IRAP-CNRS-OMP) report:

We imaged the field of GRB 140610 detected by SWIFT
(trigger 513505) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 73989145.1s after the GRB trigger
(73989124.0s after the notice). The elevation of the field increased from
13 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+73989145.1s to t0+73989325.1s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+73989333.1s to t0+73989513.1s : R > 16.2

We co-added a series of exposures:
t0+73989333.1s to t0+73990507.2s : 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 73989145.1s 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= 37.9599 lat= -1.2377
and the galactic extinction in R band is 4.9 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.