GRB100212_140819_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20100212_180806180_329773_78076500    67 stars filter C [14258.4s - 14438.4s] expo=180s elev=46.6deg humid= 52% sunelev=-13.0deg (moon at  77.0deg phase=0.09 elev=-26.0 )
AL_20100212_181123436_329773_78076500    69 stars filter C [14453.5s - 14633.5s] expo=180s elev=46.1deg humid= 51% sunelev=-13.5deg (moon at  77.0deg phase=0.09 elev=-27.0 )
AL_20100212_181439201_329773_78076500    60 stars filter R [14651.9s - 14831.9s] expo=180s elev=45.6deg humid= 55% sunelev=-14.1deg (moon at  77.0deg phase=0.09 elev=-27.0 )
AL_20100212_193820208_329659_78065100    59 stars filter V [19672.5s - 19852.5s] expo=180s elev=33.3deg humid= 65% sunelev=-29.2deg (moon at  77.0deg phase=0.08 elev=-41.0 )
AL_20100212_194138942_329659_78065100    61 stars filter R [19869.6s - 20049.6s] expo=180s elev=32.8deg humid= 65% sunelev=-29.8deg (moon at  77.0deg phase=0.08 elev=-42.0 )
AL_20100212_194457250_329659_78065100    51 stars filter I [20069.1s - 20249.1s] expo=180s elev=32.4deg humid= 65% sunelev=-30.4deg (moon at  77.0deg phase=0.08 elev=-43.0 )
AL_20100212_200121114_329637_78062900    56 stars filter V [21052.7s - 21232.7s] expo=180s elev=30.1deg humid= 65% sunelev=-33.3deg (moon at  77.0deg phase=0.08 elev=-45.0 )
AL_20100212_200436390_329637_78062900    54 stars filter R [21248.2s - 21428.2s] expo=180s elev=29.7deg humid= 66% sunelev=-33.8deg (moon at  77.0deg phase=0.08 elev=-46.0 )
AL_20100212_200751922_329637_78062900    51 stars filter I [21443.8s - 21623.8s] expo=180s elev=29.3deg humid= 66% sunelev=-34.4deg (moon at  77.0deg phase=0.08 elev=-46.0 )
AL_20100212_202606676_329638_78063000    57 stars filter V [22538.3s - 22718.3s] expo=180s elev=26.8deg humid= 67% sunelev=-37.5deg (moon at  76.0deg phase=0.08 elev=-49.0 )
AL_20100212_202925816_329638_78063000    58 stars filter R [22735.8s - 22915.8s] expo=180s elev=26.4deg humid= 67% sunelev=-38.1deg (moon at  76.0deg phase=0.08 elev=-49.0 )
AL_20100212_203245556_329638_78063000    52 stars filter I [22935.3s - 23115.3s] expo=180s elev=26.0deg humid= 67% sunelev=-38.7deg (moon at  76.0deg phase=0.08 elev=-50.0 )
AL_20100212_205103576_329639_78063100    54 stars filter V [24033.9s - 24213.9s] expo=180s elev=23.7deg humid= 65% sunelev=-41.7deg (moon at  76.0deg phase=0.08 elev=-52.0 )
AL_20100212_205421808_329639_78063100    60 stars filter R [24233.4s - 24413.4s] expo=180s elev=23.3deg humid= 63% sunelev=-42.3deg (moon at  76.0deg phase=0.08 elev=-53.0 )
AL_20100212_205740808_329639_78063100    51 stars filter I [24431.0s - 24611.0s] expo=180s elev=22.9deg humid= 61% sunelev=-42.8deg (moon at  76.0deg phase=0.08 elev=-53.0 )
AL_20100212_214050427_329641_78063300    50 stars filter V [27021.8s - 27201.8s] expo=180s elev=17.9deg humid= 59% sunelev=-49.4deg (moon at  76.0deg phase=0.08 elev=-58.0 )
AL_20100212_214408776_329641_78063300    59 stars filter R [27220.6s - 27400.6s] expo=180s elev=17.5deg humid= 58% sunelev=-49.8deg (moon at  76.0deg phase=0.07 elev=-58.0 )
AL_20100212_214724214_329641_78063300    50 stars filter I [27416.1s - 27596.1s] expo=180s elev=17.2deg humid= 58% sunelev=-50.3deg (moon at  76.0deg phase=0.07 elev=-59.0 )
AL_20100212_225137664_329688_78068000    32 stars filter V [31268.5s - 31448.5s] expo=180s elev=11.1deg humid= 63% sunelev=-57.5deg (moon at  75.0deg phase=0.07 elev=-62.0 )
AL_20100212_225455759_329688_78068000    35 stars filter R [31467.5s - 31647.5s] expo=180s elev=10.8deg humid= 58% sunelev=-57.7deg (moon at  75.0deg phase=0.07 elev=-62.0 )
AL_20100212_225811212_329688_78068000    36 stars filter I [31663.1s - 31843.1s] expo=180s elev=10.5deg humid= 60% sunelev=-58.0deg (moon at  75.0deg phase=0.07 elev=-62.0 )
AL_20100213_000217047_329689_78068100     1 star  filter V [35508.9s - 35688.9s] expo=180s elev= 6.3deg humid= 56% sunelev=-59.6deg (moon at  75.0deg phase=0.07 elev=-58.0 )
AL_20100213_000532646_329689_78068100     0 star  filter R [35704.4s - 35884.4s] expo=180s elev= 6.1deg humid= 57% sunelev=-59.5deg (moon at  75.0deg phase=0.07 elev=-58.0 )
AL_20100213_000851724_329689_78068100     0 star  filter I [35902.0s - 36082.0s] expo=180s elev= 6.0deg humid= 57% sunelev=-59.4deg (moon at  75.0deg phase=0.07 elev=-58.0 )
AL_20100213_010922066_329690_78068200     0 star  filter V [39532.1s - 39712.1s] expo=180s elev= 3.9deg humid= 69% sunelev=-55.1deg (moon at  74.0deg phase=0.06 elev=-50.0 )
AL_20100213_011240816_329690_78068200     0 star  filter R [39731.7s - 39911.7s] expo=180s elev= 3.8deg humid= 70% sunelev=-54.7deg (moon at  74.0deg phase=0.06 elev=-50.0 )
AL_20100213_011559367_329690_78068200     0 star  filter I [39931.2s - 40111.2s] expo=180s elev= 3.8deg humid= 70% sunelev=-54.4deg (moon at  74.0deg phase=0.06 elev=-49.0 )
AL_20100213_020437998_329691_78068300     0 star  filter V [42849.9s - 43029.9s] expo=180s elev= 3.6deg humid= 64% sunelev=-47.9deg (moon at  74.0deg phase=0.06 elev=-42.0 )
AL_20100213_020753612_329691_78068300     0 star  filter R [43045.4s - 43225.4s] expo=180s elev= 3.6deg humid= 66% sunelev=-47.5deg (moon at  74.0deg phase=0.06 elev=-41.0 )
AL_20100213_021112830_329691_78068300     0 star  filter I [43242.9s - 43422.9s] expo=180s elev= 3.6deg humid= 66% sunelev=-47.0deg (moon at  74.0deg phase=0.06 elev=-41.0 )
AL_20100213_033532357_329692_78068400     0 star  filter R [48304.2s - 48484.2s] expo=180s elev= 6.4deg humid= 65% sunelev=-33.0deg (moon at  73.0deg phase=0.06 elev=-26.0 )
AL_20100213_033851553_329692_78068400     0 star  filter I [48501.7s - 48681.7s] expo=180s elev= 6.5deg humid= 63% sunelev=-32.4deg (moon at  73.0deg phase=0.06 elev=-26.0 )
AL_20100213_044301167_329693_78068500    26 stars filter V [52351.6s - 52531.6s] expo=180s elev=10.9deg humid= 70% sunelev=-20.9deg (moon at  73.0deg phase=0.05 elev=-14.0 )
AL_20100213_044620433_329693_78068500    34 stars filter R [52551.1s - 52731.1s] expo=180s elev=11.2deg humid= 70% sunelev=-20.3deg (moon at  73.0deg phase=0.05 elev=-14.0 )
AL_20100213_044938848_329693_78068500    29 stars filter I [52750.7s - 52930.7s] expo=180s elev=11.5deg humid= 69% sunelev=-19.7deg (moon at  73.0deg phase=0.05 elev=-13.0 )
AL_20100214_050431747_329714_78070600     0 star  filter V [140041.9s - 140221.9s] expo=180s elev=13.1deg humid= 88% sunelev=-16.8deg (moon at  64.0deg phase=0.01 elev=-15.0 )
AL_20100214_050747733_329714_78070600     0 star  filter R [140237.5s - 140417.5s] expo=180s elev=13.4deg humid= 87% sunelev=-16.2deg (moon at  64.0deg phase=0.01 elev=-14.0 )
AL_20100214_051103077_329714_78070600     3 stars filter I [140435.1s - 140615.1s] expo=180s elev=13.8deg humid= 87% sunelev=-15.6deg (moon at  64.0deg phase=0.01 elev=-14.0 )
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=112.128466 lat=-11.993657
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.162
Assuming Rv=3.1: Av=0.538 Ar=0.434 Ai=0.315 Extinction map E(B-V) from Schlegel:

Field of View is about 62 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 100212: TAROT Calern observatory optical observations
Klotz A. (CESR-OMP), Gendre B. (IASF),
Boer M. (OHP-OAMP), Atteia J.L. (LATT-OMP) report:

We imaged the field of GRB 100212 detected by SWIFT
(trigger 412081) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 14258.4s after the GRB trigger
(XXXs after the notice). The elevation of the field decreased from
46 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2010-02-12T14:07:22.020

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+14258.4s to t0+14438.4s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+14453.5s to t0+14633.5s : R > 16.2

We co-added a series of exposures:
t0+14453.5s to t0+21232.7s : 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 14258.4s 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=112.1285 lat=-11.9937
and the galactic extinction in R band is 0.4 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.