GRB111123_181407_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20111124_012415425_000002_32063201     0 star  filter C [25789.5s - 25849.5s] expo= 60s elev= 2.9deg humid= 53% sunelev=-54.9deg (moon at  62.0deg phase=0.09 elev=-42.0 )
AL_20111124_012455691_000002_32063201     0 star  filter C [25859.8s - 25889.8s] expo= 30s elev= 3.0deg humid= 53% sunelev=-54.7deg (moon at  62.0deg phase=0.09 elev=-42.0 )
AL_20111124_012535987_000002_32063201     0 star  filter C [25900.1s - 25930.1s] expo= 30s elev= 3.1deg humid= 53% sunelev=-54.6deg (moon at  62.0deg phase=0.09 elev=-42.0 )
AL_20111124_012616035_000002_32063201     0 star  filter C [25940.1s - 25970.1s] expo= 30s elev= 3.2deg humid= 52% sunelev=-54.5deg (moon at  62.0deg phase=0.09 elev=-42.0 )
AL_20111124_012656066_000002_32063201     0 star  filter C [25980.1s - 26010.1s] expo= 30s elev= 3.3deg humid= 52% sunelev=-54.4deg (moon at  62.0deg phase=0.09 elev=-41.0 )
AL_20111124_012736284_000002_32063201     0 star  filter C [26020.4s - 26050.4s] expo= 30s elev= 3.4deg humid= 52% sunelev=-54.3deg (moon at  62.0deg phase=0.09 elev=-41.0 )
AL_20111124_013241091_000002_32063301     5 stars filter C [26265.1s - 26355.1s] expo= 90s elev= 4.1deg humid= 52% sunelev=-53.7deg (moon at  62.0deg phase=0.09 elev=-41.0 )
AL_20111124_013421559_000002_32063301     8 stars filter C [26365.6s - 26455.6s] expo= 90s elev= 4.3deg humid= 52% sunelev=-53.4deg (moon at  62.0deg phase=0.09 elev=-40.0 )
AL_20111124_013601622_000002_32063301     4 stars filter R [26465.7s - 26555.7s] expo= 90s elev= 4.6deg humid= 52% sunelev=-53.1deg (moon at  62.0deg phase=0.09 elev=-40.0 )
AL_20111124_013741646_000002_32063301     5 stars filter C [26565.7s - 26655.7s] expo= 90s elev= 4.8deg humid= 52% sunelev=-52.9deg (moon at  62.0deg phase=0.09 elev=-40.0 )
AL_20111124_013922161_000002_32063301     9 stars filter C [26666.2s - 26756.2s] expo= 90s elev= 5.1deg humid= 53% sunelev=-52.6deg (moon at  62.0deg phase=0.09 elev=-39.0 )
AL_20111124_014102209_000002_32063301     8 stars filter R [26766.3s - 26856.3s] expo= 90s elev= 5.3deg humid= 53% sunelev=-52.3deg (moon at  62.0deg phase=0.09 elev=-39.0 )
AL_20111124_014352302_000002_32063401    10 stars filter C [26936.4s - 27026.4s] expo= 90s elev= 5.7deg humid= 53% sunelev=-51.9deg (moon at  62.0deg phase=0.09 elev=-39.0 )
AL_20111124_014532817_000002_32063401     9 stars filter C [27036.9s - 27126.9s] expo= 90s elev= 6.0deg humid= 52% sunelev=-51.6deg (moon at  62.0deg phase=0.09 elev=-38.0 )
AL_20111124_014713083_000002_32063401     6 stars filter R [27137.2s - 27227.2s] expo= 90s elev= 6.2deg humid= 52% sunelev=-51.3deg (moon at  62.0deg phase=0.09 elev=-38.0 )
AL_20111124_014853362_000002_32063401    10 stars filter C [27237.4s - 27327.4s] expo= 90s elev= 6.4deg humid= 52% sunelev=-51.0deg (moon at  62.0deg phase=0.09 elev=-38.0 )
AL_20111124_015033628_000002_32063401    11 stars filter C [27337.7s - 27427.7s] expo= 90s elev= 6.7deg humid= 52% sunelev=-50.8deg (moon at  62.0deg phase=0.09 elev=-38.0 )
AL_20111124_015213441_000002_32063401     9 stars filter R [27437.5s - 27527.5s] expo= 90s elev= 6.9deg humid= 52% sunelev=-50.5deg (moon at  62.0deg phase=0.09 elev=-37.0 )
AL_20111124_020006344_000002_32063501    11 stars filter C [27820.4s - 28000.4s] expo=180s elev= 7.9deg humid= 52% sunelev=-49.4deg (moon at  62.0deg phase=0.09 elev=-36.0 )
AL_20111124_020316625_000002_32063501    12 stars filter C [28010.7s - 28190.7s] expo=180s elev= 8.4deg humid= 52% sunelev=-48.9deg (moon at  62.0deg phase=0.09 elev=-36.0 )
AL_20111124_020626671_000002_32063501    11 stars filter R [28200.7s - 28380.7s] expo=180s elev= 8.8deg humid= 52% sunelev=-48.4deg (moon at  62.0deg phase=0.09 elev=-35.0 )
AL_20111124_020937179_000002_32063501    14 stars filter C [28391.2s - 28571.2s] expo=180s elev= 9.2deg humid= 52% sunelev=-47.8deg (moon at  62.0deg phase=0.09 elev=-35.0 )
AL_20111124_021247226_000002_32063501    14 stars filter C [28581.3s - 28761.3s] expo=180s elev= 9.7deg humid= 52% sunelev=-47.3deg (moon at  63.0deg phase=0.09 elev=-34.0 )
AL_20111124_021557274_000002_32063501    12 stars filter R [28771.3s - 28951.3s] expo=180s elev=10.1deg humid= 52% sunelev=-46.7deg (moon at  63.0deg phase=0.09 elev=-33.0 )
AL_20111124_022009237_000002_32063601    13 stars filter C [29023.3s - 29203.3s] expo=180s elev=10.6deg humid= 52% sunelev=-46.0deg (moon at  63.0deg phase=0.09 elev=-33.0 )
AL_20111124_022319753_000002_32063601    14 stars filter C [29213.8s - 29393.8s] expo=180s elev=11.1deg humid= 52% sunelev=-45.5deg (moon at  63.0deg phase=0.09 elev=-32.0 )
AL_20111124_022629768_000002_32063601    13 stars filter R [29403.9s - 29583.9s] expo=180s elev=11.5deg humid= 52% sunelev=-44.9deg (moon at  63.0deg phase=0.09 elev=-32.0 )
AL_20111124_022939842_000002_32063601    14 stars filter C [29593.9s - 29773.9s] expo=180s elev=11.9deg humid= 52% sunelev=-44.4deg (moon at  63.0deg phase=0.09 elev=-31.0 )
AL_20111124_023250108_000002_32063601    14 stars filter C [29784.2s - 29964.2s] expo=180s elev=12.3deg humid= 52% sunelev=-43.8deg (moon at  63.0deg phase=0.09 elev=-31.0 )
AL_20111124_023600342_000002_32063601    13 stars filter R [29974.5s - 30154.5s] expo=180s elev=12.7deg humid= 52% sunelev=-43.3deg (moon at  63.0deg phase=0.09 elev=-30.0 )
AL_20111124_024011448_000002_32063701    14 stars filter C [30225.5s - 30405.5s] expo=180s elev=13.2deg humid= 52% sunelev=-42.5deg (moon at  63.0deg phase=0.09 elev=-29.0 )
AL_20111124_024321729_000002_32063701    13 stars filter C [30415.8s - 30595.8s] expo=180s elev=13.6deg humid= 52% sunelev=-42.0deg (moon at  63.0deg phase=0.09 elev=-29.0 )
AL_20111124_024631526_000002_32063701    13 stars filter R [30605.6s - 30785.6s] expo=180s elev=14.0deg humid= 51% sunelev=-41.4deg (moon at  63.0deg phase=0.09 elev=-28.0 )
AL_20111124_024941615_000002_32063701    14 stars filter C [30795.6s - 30975.6s] expo=180s elev=14.4deg humid= 50% sunelev=-40.9deg (moon at  63.0deg phase=0.09 elev=-28.0 )
AL_20111124_025251834_000002_32063701    14 stars filter C [30985.9s - 31165.9s] expo=180s elev=14.7deg humid= 49% sunelev=-40.3deg (moon at  63.0deg phase=0.09 elev=-27.0 )
AL_20111124_025602334_000002_32063701    13 stars filter R [31176.4s - 31356.4s] expo=180s elev=15.1deg humid= 49% sunelev=-39.7deg (moon at  63.0deg phase=0.08 elev=-27.0 )
AL_20111124_030012720_000002_32063801    17 stars filter C [31426.8s - 31606.8s] expo=180s elev=15.6deg humid= 48% sunelev=-39.0deg (moon at  63.0deg phase=0.08 elev=-26.0 )
AL_20111124_030322985_000002_32063801    15 stars filter C [31617.0s - 31797.0s] expo=180s elev=16.0deg humid= 49% sunelev=-38.4deg (moon at  63.0deg phase=0.08 elev=-25.0 )
AL_20111124_030633267_000002_32063801    13 stars filter R [31807.3s - 31987.3s] expo=180s elev=16.3deg humid= 49% sunelev=-37.9deg (moon at  63.0deg phase=0.08 elev=-25.0 )
AL_20111124_030943776_000002_32063801    14 stars filter C [31997.8s - 32177.8s] expo=180s elev=16.7deg humid= 49% sunelev=-37.3deg (moon at  63.0deg phase=0.08 elev=-24.0 )
AL_20111124_031254510_000002_32063801    17 stars filter C [32188.6s - 32368.6s] expo=180s elev=17.0deg humid= 49% sunelev=-36.7deg (moon at  63.0deg phase=0.08 elev=-24.0 )
AL_20111124_031604776_000002_32063801    13 stars filter R [32378.8s - 32558.8s] expo=180s elev=17.3deg humid= 49% sunelev=-36.1deg (moon at  63.0deg phase=0.08 elev=-23.0 )
AL_20111124_032014662_000002_32063901    17 stars filter C [32628.7s - 32808.7s] expo=180s elev=17.8deg humid= 49% sunelev=-35.4deg (moon at  63.0deg phase=0.08 elev=-23.0 )
AL_20111124_032324708_000002_32063901    18 stars filter C [32818.8s - 32998.8s] expo=180s elev=18.1deg humid= 49% sunelev=-34.8deg (moon at  63.0deg phase=0.08 elev=-22.0 )
AL_20111124_032635162_000002_32063901    14 stars filter R [33009.3s - 33189.3s] expo=180s elev=18.4deg humid= 49% sunelev=-34.3deg (moon at  63.0deg phase=0.08 elev=-21.0 )
AL_20111124_032945265_000002_32063901    17 stars filter C [33199.3s - 33379.3s] expo=180s elev=18.7deg humid= 49% sunelev=-33.7deg (moon at  63.0deg phase=0.08 elev=-21.0 )
AL_20111124_033255546_000002_32063901    20 stars filter C [33389.6s - 33569.6s] expo=180s elev=19.0deg humid= 49% sunelev=-33.1deg (moon at  63.0deg phase=0.08 elev=-20.0 )
AL_20111124_033605562_000002_32063901    13 stars filter R [33579.7s - 33759.7s] expo=180s elev=19.3deg humid= 49% sunelev=-32.5deg (moon at  63.0deg phase=0.08 elev=-20.0 )
AL_20111124_034025884_000002_32064001    17 stars filter C [33840.0s - 34020.0s] expo=180s elev=19.7deg humid= 50% sunelev=-31.8deg (moon at  63.0deg phase=0.08 elev=-19.0 )
AL_20111124_034336195_000002_32064001    18 stars filter C [34030.3s - 34210.3s] expo=180s elev=20.0deg humid= 50% sunelev=-31.2deg (moon at  63.0deg phase=0.08 elev=-19.0 )
AL_20111124_034646711_000002_32064001    14 stars filter R [34220.8s - 34400.8s] expo=180s elev=20.3deg humid= 51% sunelev=-30.6deg (moon at  63.0deg phase=0.08 elev=-18.0 )
AL_20111124_034956985_000002_32064001    19 stars filter C [34411.1s - 34591.1s] expo=180s elev=20.6deg humid= 51% sunelev=-30.0deg (moon at  63.0deg phase=0.08 elev=-18.0 )
AL_20111124_035307033_000002_32064001    17 stars filter C [34601.1s - 34781.1s] expo=180s elev=20.9deg humid= 51% sunelev=-29.5deg (moon at  64.0deg phase=0.08 elev=-17.0 )
AL_20111124_035617564_000002_32064001    14 stars filter R [34791.6s - 34971.6s] expo=180s elev=21.1deg humid= 51% sunelev=-28.9deg (moon at  64.0deg phase=0.08 elev=-16.0 )
AL_20111124_040019343_000002_32064101    19 stars filter C [35033.4s - 35213.4s] expo=180s elev=21.4deg humid= 51% sunelev=-28.2deg (moon at  64.0deg phase=0.08 elev=-16.0 )
AL_20111124_040329579_000002_32064101    18 stars filter C [35223.7s - 35403.7s] expo=180s elev=21.7deg humid= 51% sunelev=-27.6deg (moon at  64.0deg phase=0.08 elev=-15.0 )
AL_20111124_040639625_000002_32064101    15 stars filter R [35413.7s - 35593.7s] expo=180s elev=21.9deg humid= 50% sunelev=-27.0deg (moon at  64.0deg phase=0.08 elev=-15.0 )
AL_20111124_040950147_000002_32064101    17 stars filter C [35604.2s - 35784.2s] expo=180s elev=22.2deg humid= 49% sunelev=-26.5deg (moon at  64.0deg phase=0.08 elev=-14.0 )
AL_20111124_041300179_000002_32064101    18 stars filter C [35794.2s - 35974.2s] expo=180s elev=22.4deg humid= 48% sunelev=-25.9deg (moon at  64.0deg phase=0.08 elev=-14.0 )
AL_20111124_041610225_000002_32064101    14 stars filter R [35984.3s - 36164.3s] expo=180s elev=22.6deg humid= 48% sunelev=-25.3deg (moon at  64.0deg phase=0.08 elev=-13.0 )
AL_20111124_042021513_000002_32064201    18 stars filter C [36235.6s - 36415.6s] expo=180s elev=22.9deg humid= 48% sunelev=-24.6deg (moon at  64.0deg phase=0.08 elev=-12.0 )
AL_20111124_042331560_000002_32064201    19 stars filter C [36425.6s - 36605.6s] expo=180s elev=23.1deg humid= 48% sunelev=-24.0deg (moon at  64.0deg phase=0.08 elev=-12.0 )
AL_20111124_042641592_000002_32064201    14 stars filter R [36615.7s - 36795.7s] expo=180s elev=23.3deg humid= 48% sunelev=-23.4deg (moon at  64.0deg phase=0.08 elev=-11.0 )
AL_20111124_042951881_000002_32064201    18 stars filter C [36805.9s - 36985.9s] expo=180s elev=23.5deg humid= 49% sunelev=-22.9deg (moon at  64.0deg phase=0.08 elev=-11.0 )
AL_20111124_043301678_000002_32064201    18 stars filter C [36995.8s - 37175.8s] expo=180s elev=23.6deg humid= 49% sunelev=-22.3deg (moon at  64.0deg phase=0.08 elev=-10.0 )
AL_20111124_043611960_000002_32064201    14 stars filter R [37186.0s - 37366.0s] expo=180s elev=23.8deg humid= 49% sunelev=-21.7deg (moon at  64.0deg phase=0.08 elev=-10.0 )
AL_20111124_044023240_000002_32064301    17 stars filter C [37437.3s - 37617.3s] expo=180s elev=24.0deg humid= 48% sunelev=-21.0deg (moon at  64.0deg phase=0.08 elev= -9.0 )
AL_20111124_044333740_000002_32064301    18 stars filter C [37627.8s - 37807.8s] expo=180s elev=24.2deg humid= 47% sunelev=-20.4deg (moon at  64.0deg phase=0.08 elev= -9.0 )
AL_20111124_044643833_000002_32064301    15 stars filter R [37817.9s - 37997.9s] expo=180s elev=24.3deg humid= 47% sunelev=-19.9deg (moon at  64.0deg phase=0.08 elev= -8.0 )
AL_20111124_044953843_000002_32064301    15 stars filter C [38007.9s - 38187.9s] expo=180s elev=24.5deg humid= 47% sunelev=-19.3deg (moon at  64.0deg phase=0.08 elev= -8.0 )
AL_20111124_045304092_000002_32064301    15 stars filter C [38198.2s - 38378.2s] expo=180s elev=24.6deg humid= 47% sunelev=-18.7deg (moon at  64.0deg phase=0.08 elev= -7.0 )
AL_20111124_045614607_000002_32064301    15 stars filter R [38388.7s - 38568.7s] expo=180s elev=24.7deg humid= 47% sunelev=-18.2deg (moon at  64.0deg phase=0.08 elev= -7.0 )
AL_20111124_050024276_000002_32064401    18 stars filter C [38638.3s - 38818.3s] expo=180s elev=24.9deg humid= 46% sunelev=-17.4deg (moon at  64.0deg phase=0.08 elev= -6.0 )
AL_20111124_050334760_000002_32064401    17 stars filter C [38828.9s - 39008.9s] expo=180s elev=25.0deg humid= 46% sunelev=-16.9deg (moon at  64.0deg phase=0.08 elev= -5.0 )
AL_20111124_050644806_000002_32064401    15 stars filter R [39018.9s - 39198.9s] expo=180s elev=25.1deg humid= 46% sunelev=-16.3deg (moon at  64.0deg phase=0.08 elev= -5.0 )
AL_20111124_050955334_000002_32064401    15 stars filter C [39209.4s - 39389.4s] expo=180s elev=25.1deg humid= 47% sunelev=-15.8deg (moon at  64.0deg phase=0.08 elev= -4.0 )
AL_20111124_051305146_000002_32064401    15 stars filter C [39399.2s - 39579.2s] expo=180s elev=25.2deg humid= 47% sunelev=-15.2deg (moon at  64.0deg phase=0.08 elev= -4.0 )
AL_20111124_051615412_000002_32064401    14 stars filter R [39589.5s - 39769.5s] expo=180s elev=25.3deg humid= 47% sunelev=-14.6deg (moon at  64.0deg phase=0.08 elev= -3.0 )
AL_20111124_052028156_000002_32064501    14 stars filter C [39842.2s - 40022.2s] expo=180s elev=25.4deg humid= 47% sunelev=-13.9deg (moon at  64.0deg phase=0.08 elev= -3.0 )
AL_20111124_052338891_000002_32064501    14 stars filter C [40032.9s - 40212.9s] expo=180s elev=25.4deg humid= 48% sunelev=-13.4deg (moon at  64.0deg phase=0.08 elev= -2.0 )
AL_20111124_052649578_000002_32064501    13 stars filter R [40223.6s - 40403.6s] expo=180s elev=25.5deg humid= 47% sunelev=-12.8deg (moon at  64.0deg phase=0.08 elev= -2.0 )
AL_20111124_052959400_000002_32064501    13 stars filter C [40413.4s - 40593.4s] expo=180s elev=25.5deg humid= 47% sunelev=-12.3deg (moon at  64.0deg phase=0.08 elev= -1.0 )
AL_20111124_053309885_000002_32064501    14 stars filter C [40604.0s - 40784.0s] expo=180s elev=25.5deg humid= 47% sunelev=-11.7deg (moon at  64.0deg phase=0.08 elev= -1.0 )
AL_20111124_053620166_000002_32064501    11 stars filter R [40794.2s - 40974.2s] expo=180s elev=25.6deg humid= 47% sunelev=-11.2deg (moon at  64.0deg phase=0.08 elev= +0.0 )
AL_20111124_054029833_000002_32064601     0 star  filter C [41043.9s - 41223.9s] expo=180s elev=25.6deg humid= 46% sunelev=-10.4deg (moon at  64.0deg phase=0.08 elev= +0.0 )
AL_20111124_054649928_000002_32064601     5 stars filter R [41424.0s - 41604.0s] expo=180s elev=25.6deg humid= 46% sunelev=-9.4deg (moon at  64.0deg phase=0.08 elev= +0.0 )
AL_20111124_055310250_000002_32064601     0 star  filter C [41804.3s - 41984.3s] expo=180s elev=25.5deg humid= 46% sunelev=-8.3deg (moon at  65.0deg phase=0.08 elev= +1.0 )
AL_20111124_055620530_000002_32064601     0 star  filter R [41994.6s - 42174.6s] expo=180s elev=25.5deg humid= 47% sunelev=-7.8deg (moon at  65.0deg phase=0.08 elev= +2.0 )
Informations from GCN notice:
This is a GRB
Date of GRB : 2455889.2592719910 2011-11-23T18:13:21.100
Date of notice : 2455889.2598032407 2011-11-23T18:14:06.999
Refined position : yes (error radius=3.3 arcsec)
RA(J2000.0) : 154.851000 10h19m24s2
DEC(J2000.0) : -20.642000 -20d38m31s19
Error box : x=64:66 y=63:65 (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=261.371732 lat=29.701371
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.049
Assuming Rv=3.1: Av=0.163 Ar=0.131 Ai=0.095
extmap.fit: Extinction map E(B-V) from Schlegel:

Field of View is about 77 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 111123: TAROT Calern observatory optical observations
----------------------------------------------------------------------
Klotz A. (CESR-OMP), Gendre B. (ASDC),
Boer M. (OHP-OAMP), Atteia J.L. (LATT-OMP) report:

We imaged the field of GRB 111123 detected by SWIFT
(trigger 508319) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 25789.5s after the GRB trigger
(25743.4s after the notice). The elevation of the field increased from
2 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2011-11-23T18:13:20.927

The first image is trailed with a duration of 60.0s
(see the description in Klotz et al., 2006, A&A 451, L39).
We do not detect any OT with a limiting magnitude of:
t0+25789.5s to t0+25849.5s : R > 15.1

The second image is 30.0s exposure in tracking mode:
t0+25859.8s to t0+25889.8s : R > 16.2

We co-added a series of exposures:
t0+25859.8s to t0+26355.1s : 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 25789.5s 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=261.3717 lat=+29.7014
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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