GRB120205_114747_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20120205_174036578_000002_45613801     0 star  filter C [21156.8s - 21186.8s] expo= 30s elev=72.0deg humid= 93% sunelev=-10.2deg (moon at  64.0deg phase=0.85 elev=+31.0 )
AL_20120205_174117579_000002_45613801     0 star  filter C [21197.8s - 21227.8s] expo= 30s elev=72.0deg humid= 93% sunelev=-10.3deg (moon at  64.0deg phase=0.85 elev=+32.0 )
AL_20120205_174239298_000002_45613801     0 star  filter C [21279.5s - 21309.5s] expo= 30s elev=71.9deg humid= 93% sunelev=-10.6deg (moon at  64.0deg phase=0.85 elev=+32.0 )
AL_20120205_174320002_000002_45613801     0 star  filter C [21320.2s - 21350.2s] expo= 30s elev=71.9deg humid= 93% sunelev=-10.7deg (moon at  64.0deg phase=0.85 elev=+32.0 )
AL_20120205_174705847_000002_45613901     0 star  filter C [21486.0s - 21576.0s] expo= 90s elev=71.8deg humid= 93% sunelev=-11.2deg (moon at  64.0deg phase=0.85 elev=+33.0 )
AL_20120205_174846081_000002_45613901     0 star  filter C [21586.3s - 21676.3s] expo= 90s elev=71.7deg humid= 93% sunelev=-11.5deg (moon at  64.0deg phase=0.85 elev=+33.0 )
AL_20120205_175026366_000002_45613901     0 star  filter R [21686.5s - 21776.5s] expo= 90s elev=71.6deg humid= 93% sunelev=-11.8deg (moon at  64.0deg phase=0.85 elev=+33.0 )
AL_20120205_175206913_000002_45613901     0 star  filter C [21787.0s - 21877.0s] expo= 90s elev=71.6deg humid= 93% sunelev=-12.1deg (moon at  64.0deg phase=0.85 elev=+33.0 )
AL_20120205_175347351_000002_45613901     0 star  filter C [21887.6s - 21977.6s] expo= 90s elev=71.5deg humid= 93% sunelev=-12.4deg (moon at  64.0deg phase=0.85 elev=+34.0 )
AL_20120205_175527867_000002_45613901     0 star  filter R [21988.1s - 22078.1s] expo= 90s elev=71.4deg humid= 93% sunelev=-12.7deg (moon at  64.0deg phase=0.85 elev=+34.0 )
AL_20120205_175758258_000002_45614001     0 star  filter C [22138.4s - 22228.4s] expo= 90s elev=71.3deg humid= 93% sunelev=-13.1deg (moon at  64.0deg phase=0.85 elev=+34.0 )
AL_20120205_175938978_000002_45614001     0 star  filter C [22239.2s - 22329.2s] expo= 90s elev=71.2deg humid= 93% sunelev=-13.4deg (moon at  64.0deg phase=0.85 elev=+35.0 )
AL_20120205_180119276_000002_45614001     0 star  filter R [22339.5s - 22429.5s] expo= 90s elev=71.1deg humid= 93% sunelev=-13.7deg (moon at  64.0deg phase=0.85 elev=+35.0 )
AL_20120205_180300026_000002_45614001     0 star  filter C [22440.2s - 22530.2s] expo= 90s elev=71.0deg humid= 93% sunelev=-14.0deg (moon at  64.0deg phase=0.85 elev=+35.0 )
AL_20120205_180440526_000002_45614001     0 star  filter C [22540.7s - 22630.7s] expo= 90s elev=70.9deg humid= 93% sunelev=-14.3deg (moon at  64.0deg phase=0.85 elev=+36.0 )
AL_20120205_180621026_000002_45614001     0 star  filter R [22641.2s - 22731.2s] expo= 90s elev=70.8deg humid= 93% sunelev=-14.6deg (moon at  64.0deg phase=0.85 elev=+36.0 )
AL_20120205_181420546_000002_45614101     0 star  filter C [23030.8s - 23210.8s] expo=180s elev=70.3deg humid= 93% sunelev=-15.8deg (moon at  64.0deg phase=0.85 elev=+37.0 )
AL_20120205_181731748_000002_45614101     0 star  filter C [23222.0s - 23402.0s] expo=180s elev=70.1deg humid= 93% sunelev=-16.3deg (moon at  64.0deg phase=0.85 elev=+38.0 )
AL_20120205_183425418_000002_45614201     0 star  filter C [24235.6s - 24415.6s] expo=180s elev=68.8deg humid= 93% sunelev=-19.4deg (moon at  64.0deg phase=0.85 elev=+41.0 )
AL_20120205_183736370_000002_45614201     0 star  filter C [24426.6s - 24606.6s] expo=180s elev=68.6deg humid= 93% sunelev=-19.9deg (moon at  64.0deg phase=0.85 elev=+41.0 )
AL_20120205_184047327_000002_45614201     0 star  filter R [24617.5s - 24797.5s] expo=180s elev=68.3deg humid= 93% sunelev=-20.5deg (moon at  64.0deg phase=0.85 elev=+42.0 )
AL_20120205_184358063_000002_45614201     0 star  filter C [24808.3s - 24988.3s] expo=180s elev=68.0deg humid= 93% sunelev=-21.1deg (moon at  64.0deg phase=0.85 elev=+42.0 )
AL_20120205_185020038_000002_45614201     0 star  filter R [25190.2s - 25370.2s] expo=180s elev=67.4deg humid= 92% sunelev=-22.2deg (moon at  64.0deg phase=0.85 elev=+43.0 )
AL_20120205_185426914_000002_45614301     0 star  filter C [25437.1s - 25617.1s] expo=180s elev=67.0deg humid= 93% sunelev=-23.0deg (moon at  64.0deg phase=0.85 elev=+44.0 )
AL_20120205_185737632_000002_45614301     0 star  filter C [25627.8s - 25807.8s] expo=180s elev=66.7deg humid= 93% sunelev=-23.5deg (moon at  64.0deg phase=0.85 elev=+44.0 )
AL_20120205_190358421_000002_45614301     0 star  filter C [26008.6s - 26188.6s] expo=180s elev=66.1deg humid= 93% sunelev=-24.7deg (moon at  64.0deg phase=0.85 elev=+45.0 )
AL_20120205_190709421_000002_45614301     0 star  filter C [26199.6s - 26379.6s] expo=180s elev=65.8deg humid= 92% sunelev=-25.3deg (moon at  64.0deg phase=0.85 elev=+46.0 )
AL_20120205_191020391_000002_45614301     0 star  filter R [26390.6s - 26570.6s] expo=180s elev=65.5deg humid= 92% sunelev=-25.8deg (moon at  64.0deg phase=0.85 elev=+47.0 )
AL_20120205_191427032_000002_45614401     0 star  filter C [26637.2s - 26817.2s] expo=180s elev=65.0deg humid= 92% sunelev=-26.6deg (moon at  64.0deg phase=0.85 elev=+47.0 )
AL_20120205_192047819_000002_45614401     0 star  filter R [27018.0s - 27198.0s] expo=180s elev=64.4deg humid= 92% sunelev=-27.7deg (moon at  64.0deg phase=0.85 elev=+48.0 )
AL_20120205_193020480_000002_45614401     0 star  filter R [27590.7s - 27770.7s] expo=180s elev=63.4deg humid= 92% sunelev=-29.4deg (moon at  64.0deg phase=0.86 elev=+50.0 )
AL_20120205_193438276_000002_45614501     0 star  filter C [27848.5s - 28028.5s] expo=180s elev=62.9deg humid= 92% sunelev=-30.2deg (moon at  64.0deg phase=0.86 elev=+50.0 )
AL_20120205_194100205_000002_45614501     0 star  filter R [28230.4s - 28410.4s] expo=180s elev=62.2deg humid= 91% sunelev=-31.3deg (moon at  65.0deg phase=0.86 elev=+51.0 )
AL_20120205_195033507_000002_45614501     0 star  filter R [28803.3s - 28983.3s] expo=180s elev=61.1deg humid= 91% sunelev=-33.0deg (moon at  65.0deg phase=0.86 elev=+53.0 )
AL_20120205_195431882_000002_45614601     0 star  filter C [29042.1s - 29222.1s] expo=180s elev=60.7deg humid= 91% sunelev=-33.8deg (moon at  65.0deg phase=0.86 elev=+53.0 )
AL_20120205_200404778_000002_45614601     0 star  filter C [29615.0s - 29795.0s] expo=180s elev=59.6deg humid= 90% sunelev=-35.4deg (moon at  65.0deg phase=0.86 elev=+55.0 )
AL_20120205_201026517_000002_45614601     0 star  filter R [29996.7s - 30176.7s] expo=180s elev=58.8deg humid= 91% sunelev=-36.6deg (moon at  65.0deg phase=0.86 elev=+56.0 )
AL_20120205_201435001_000002_45614701    39 stars filter C [30245.2s - 30425.2s] expo=180s elev=58.3deg humid= 91% sunelev=-37.3deg (moon at  65.0deg phase=0.86 elev=+56.0 )
AL_20120205_201745032_000002_45614701    39 stars filter C [30435.2s - 30615.2s] expo=180s elev=58.0deg humid= 91% sunelev=-37.8deg (moon at  65.0deg phase=0.86 elev=+56.0 )
AL_20120205_202055788_000002_45614701    34 stars filter R [30626.0s - 30806.0s] expo=180s elev=57.6deg humid= 90% sunelev=-38.4deg (moon at  65.0deg phase=0.86 elev=+57.0 )
AL_20120205_203435949_000002_45614801    40 stars filter C [31446.1s - 31626.1s] expo=180s elev=56.0deg humid= 89% sunelev=-40.7deg (moon at  65.0deg phase=0.86 elev=+59.0 )
AL_20120205_203747151_000002_45614801    39 stars filter C [31637.3s - 31817.3s] expo=180s elev=55.6deg humid= 88% sunelev=-41.3deg (moon at  65.0deg phase=0.86 elev=+59.0 )
AL_20120205_204057861_000002_45614801    20 stars filter R [31828.1s - 32008.1s] expo=180s elev=55.2deg humid= 89% sunelev=-41.8deg (moon at  65.0deg phase=0.86 elev=+59.0 )
AL_20120205_204408845_000002_45614801     0 star  filter C [32019.0s - 32199.0s] expo=180s elev=54.8deg humid= 89% sunelev=-42.4deg (moon at  65.0deg phase=0.86 elev=+60.0 )
AL_20120205_205029865_000002_45614801     0 star  filter R [32400.0s - 32580.0s] expo=180s elev=54.0deg humid= 88% sunelev=-43.4deg (moon at  65.0deg phase=0.86 elev=+60.0 )
AL_20120205_205448131_000002_45614901     0 star  filter C [32658.3s - 32838.3s] expo=180s elev=53.5deg humid= 88% sunelev=-44.1deg (moon at  65.0deg phase=0.86 elev=+61.0 )
AL_20120205_210110074_000002_45614901     0 star  filter R [33040.2s - 33220.2s] expo=180s elev=52.8deg humid= 88% sunelev=-45.2deg (moon at  65.0deg phase=0.86 elev=+61.0 )
AL_20120205_210731746_000002_45614901     0 star  filter C [33421.9s - 33601.9s] expo=180s elev=52.0deg humid= 88% sunelev=-46.2deg (moon at  65.0deg phase=0.86 elev=+62.0 )
AL_20120205_211042985_000002_45614901     0 star  filter R [33613.1s - 33793.1s] expo=180s elev=51.6deg humid= 87% sunelev=-46.7deg (moon at  65.0deg phase=0.86 elev=+62.0 )
AL_20120205_211440609_000002_45615001    35 stars filter C [33850.7s - 34030.7s] expo=180s elev=51.1deg humid= 87% sunelev=-47.4deg (moon at  65.0deg phase=0.86 elev=+62.0 )
AL_20120205_211751516_000002_45615001    40 stars filter C [34041.7s - 34221.7s] expo=180s elev=50.8deg humid= 86% sunelev=-47.9deg (moon at  65.0deg phase=0.86 elev=+63.0 )
AL_20120205_212101597_000002_45615001    36 stars filter R [34231.8s - 34411.8s] expo=180s elev=50.4deg humid= 86% sunelev=-48.4deg (moon at  65.0deg phase=0.86 elev=+63.0 )
AL_20120205_212412551_000002_45615001    38 stars filter C [34422.7s - 34602.7s] expo=180s elev=50.0deg humid= 84% sunelev=-48.9deg (moon at  65.0deg phase=0.86 elev=+63.0 )
AL_20120205_212723332_000002_45615001    37 stars filter C [34613.5s - 34793.5s] expo=180s elev=49.6deg humid= 84% sunelev=-49.3deg (moon at  65.0deg phase=0.86 elev=+63.0 )
AL_20120205_213034523_000002_45615001    34 stars filter R [34804.7s - 34984.7s] expo=180s elev=49.2deg humid= 86% sunelev=-49.8deg (moon at  65.0deg phase=0.86 elev=+63.0 )
AL_20120205_213441164_000002_45615101    37 stars filter C [35051.3s - 35231.3s] expo=180s elev=48.7deg humid= 85% sunelev=-50.4deg (moon at  65.0deg phase=0.86 elev=+63.0 )
AL_20120205_213752321_000002_45615101    40 stars filter C [35242.5s - 35422.5s] expo=180s elev=48.4deg humid= 85% sunelev=-50.9deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_214103308_000002_45615101    34 stars filter R [35433.5s - 35613.5s] expo=180s elev=48.0deg humid= 86% sunelev=-51.4deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_214414526_000002_45615101    35 stars filter C [35624.7s - 35804.7s] expo=180s elev=47.6deg humid= 85% sunelev=-51.8deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_214725262_000002_45615101    36 stars filter C [35815.4s - 35995.4s] expo=180s elev=47.2deg humid= 86% sunelev=-52.3deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_215036205_000002_45615101    37 stars filter R [36006.4s - 36186.4s] expo=180s elev=46.8deg humid= 86% sunelev=-52.8deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_215444034_000002_45615201    39 stars filter C [36254.2s - 36434.2s] expo=180s elev=46.3deg humid= 86% sunelev=-53.3deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_215754986_000002_45615201    37 stars filter C [36445.2s - 36625.2s] expo=180s elev=46.0deg humid= 87% sunelev=-53.8deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_220106255_000002_45615201    29 stars filter R [36636.4s - 36816.4s] expo=180s elev=45.6deg humid= 86% sunelev=-54.2deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_220416943_000002_45615201    39 stars filter C [36827.1s - 37007.1s] expo=180s elev=45.2deg humid= 85% sunelev=-54.6deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_220727193_000002_45615201    35 stars filter C [37017.4s - 37197.4s] expo=180s elev=44.8deg humid= 87% sunelev=-55.0deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_221038011_000002_45615201    29 stars filter R [37208.1s - 37388.1s] expo=180s elev=44.5deg humid= 85% sunelev=-55.4deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_222053328_000002_45615301    35 stars filter C [37823.5s - 38003.5s] expo=180s elev=43.3deg humid= 84% sunelev=-56.7deg (moon at  65.0deg phase=0.86 elev=+64.0 )
AL_20120205_222403375_000002_45615301    29 stars filter R [38013.6s - 38193.6s] expo=180s elev=42.9deg humid= 86% sunelev=-57.0deg (moon at  65.0deg phase=0.86 elev=+63.0 )
AL_20120205_222714109_000002_45615301    19 stars filter V [38204.3s - 38384.3s] expo=180s elev=42.5deg humid= 85% sunelev=-57.4deg (moon at  65.0deg phase=0.86 elev=+63.0 )
AL_20120205_224538586_000002_45615401    34 stars filter C [39308.8s - 39488.8s] expo=180s elev=40.4deg humid= 85% sunelev=-59.2deg (moon at  65.0deg phase=0.86 elev=+62.0 )
AL_20120205_224849540_000002_45615401    29 stars filter R [39499.7s - 39679.7s] expo=180s elev=40.1deg humid= 85% sunelev=-59.5deg (moon at  65.0deg phase=0.86 elev=+62.0 )
AL_20120205_225200279_000002_45615401    17 stars filter V [39690.5s - 39870.5s] expo=180s elev=39.7deg humid= 84% sunelev=-59.8deg (moon at  65.0deg phase=0.86 elev=+62.0 )
AL_20120205_231039773_000002_45615501    33 stars filter C [40810.0s - 40990.0s] expo=180s elev=37.6deg humid= 85% sunelev=-61.1deg (moon at  66.0deg phase=0.86 elev=+60.0 )
AL_20120205_231350523_000002_45615501    27 stars filter R [41000.7s - 41180.7s] expo=180s elev=37.3deg humid= 84% sunelev=-61.3deg (moon at  66.0deg phase=0.86 elev=+60.0 )
AL_20120205_231700554_000002_45615501    19 stars filter V [41190.7s - 41370.7s] expo=180s elev=36.9deg humid= 84% sunelev=-61.4deg (moon at  66.0deg phase=0.86 elev=+59.0 )
AL_20120205_233519718_000002_45615601    33 stars filter C [42289.9s - 42469.9s] expo=180s elev=35.0deg humid= 83% sunelev=-62.0deg (moon at  66.0deg phase=0.86 elev=+57.0 )
AL_20120205_233829983_000002_45615601    28 stars filter R [42480.2s - 42660.2s] expo=180s elev=34.6deg humid= 83% sunelev=-62.1deg (moon at  66.0deg phase=0.86 elev=+57.0 )
AL_20120205_234140740_000002_45615601    19 stars filter V [42670.9s - 42850.9s] expo=180s elev=34.3deg humid= 84% sunelev=-62.1deg (moon at  66.0deg phase=0.86 elev=+56.0 )
AL_20120206_000010470_000002_45615701    35 stars filter C [43780.6s - 43960.6s] expo=180s elev=32.4deg humid= 85% sunelev=-62.0deg (moon at  66.0deg phase=0.86 elev=+54.0 )
AL_20120206_000321237_000002_45615701    25 stars filter R [43971.4s - 44151.4s] expo=180s elev=32.1deg humid= 85% sunelev=-62.0deg (moon at  66.0deg phase=0.86 elev=+53.0 )
AL_20120206_000632174_000002_45615701    18 stars filter V [44162.3s - 44342.3s] expo=180s elev=31.8deg humid= 85% sunelev=-61.9deg (moon at  66.0deg phase=0.86 elev=+53.0 )
AL_20120206_002507338_000002_45615801    30 stars filter C [45277.5s - 45457.5s] expo=180s elev=30.0deg humid= 84% sunelev=-61.0deg (moon at  66.0deg phase=0.86 elev=+50.0 )
AL_20120206_002818292_000002_45615801    28 stars filter R [45468.5s - 45648.5s] expo=180s elev=29.7deg humid= 83% sunelev=-60.8deg (moon at  66.0deg phase=0.86 elev=+50.0 )
AL_20120206_003129546_000002_45615801    16 stars filter V [45659.7s - 45839.7s] expo=180s elev=29.4deg humid= 83% sunelev=-60.6deg (moon at  66.0deg phase=0.86 elev=+49.0 )
AL_20120206_004948395_000002_45615901    34 stars filter C [46758.5s - 46938.5s] expo=180s elev=27.7deg humid= 82% sunelev=-59.2deg (moon at  66.0deg phase=0.87 elev=+46.0 )
AL_20120206_005259071_000002_45615901    26 stars filter R [46949.3s - 47129.3s] expo=180s elev=27.4deg humid= 82% sunelev=-58.9deg (moon at  66.0deg phase=0.87 elev=+46.0 )
AL_20120206_005609586_000002_45615901    17 stars filter V [47139.8s - 47319.8s] expo=180s elev=27.1deg humid= 83% sunelev=-58.6deg (moon at  66.0deg phase=0.87 elev=+45.0 )
AL_20120206_011440908_000002_45616001    30 stars filter C [48251.1s - 48431.1s] expo=180s elev=25.5deg humid= 82% sunelev=-56.6deg (moon at  66.0deg phase=0.87 elev=+42.0 )
AL_20120206_011752064_000002_45616001    23 stars filter R [48442.3s - 48622.3s] expo=180s elev=25.3deg humid= 82% sunelev=-56.2deg (moon at  66.0deg phase=0.87 elev=+42.0 )
AL_20120206_012102117_000002_45616001    14 stars filter V [48632.3s - 48812.3s] expo=180s elev=25.0deg humid= 82% sunelev=-55.8deg (moon at  66.0deg phase=0.87 elev=+41.0 )
Informations from GCN notice:
This is not a GRB (a retractation has been edited)
Date of GRB : 2455962.9912571758 2012-02-05T11:47:24.619
Date of notice : 2455962.9915046296 2012-02-05T11:47:45.999
Refined position : no
RA(J2000.0) : 40.100000 02h40m24s0
DEC(J2000.0) : 61.220000 +61d13m12s00
Error box : x=11:120 y=-209:-100 (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=135.665009 lat=1.071763
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=1.442
Assuming Rv=3.1: Av=4.780 Ar=3.854 Ai=2.797
extmap.fit: 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
GRBlog
ROTSE last GRB images

Example of a GCNC email for this burst

gcncirc@capella.gsfc.nasa.gov
GRB 120205: TAROT Calern observatory optical observations
----------------------------------------------------------------------
Klotz A. (IRAP-CNRS-OMP), Gendre B. (ASDC/INAF-OAR),
Boer M. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report:

We imaged the field of GRB 120205 detected by SWIFT
(trigger 513505) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 21156.8s after the GRB trigger
(21135.6s after the notice). The elevation of the field decreased from
72 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 30.0s
(see the description in Klotz et al., 2006, A&A 451, L39).
We do not detect any OT with a limiting magnitude of:
t0+21156.8s to t0+21186.8s : R > 15.1

The second image is 30.0s exposure in tracking mode:
t0+21197.8s to t0+21227.8s : R > 16.2

We co-added a series of exposures:
t0+21197.8s to t0+21776.5s : 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 21156.8s 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=135.6650 lat= +1.0718
and the galactic extinction in R band is 3.9 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

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