GRB110801_195032_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20110801_195153100_110801_19500     0 star  filter C [   65.3s -   125.3s] expo= 60s elev=35.0deg humid= 87% sunelev=-9.5deg (moon at  82.0deg phase=0.15 elev= -4.0 )
AL_20110801_200555200_000002_08825801     0 star  filter R [  877.4s -   967.4s] expo= 90s elev=34.9deg humid= 86% sunelev=-11.5deg (moon at  82.0deg phase=0.15 elev= -6.0 )
AL_20110801_200735732_000002_08825801     0 star  filter C [  978.0s -  1068.0s] expo= 90s elev=34.9deg humid= 86% sunelev=-11.7deg (moon at  82.0deg phase=0.15 elev= -6.0 )
AL_20110801_201056982_000002_08825801     0 star  filter R [ 1179.2s -  1269.2s] expo= 90s elev=34.9deg humid= 86% sunelev=-12.2deg (moon at  82.0deg phase=0.15 elev= -7.0 )
AL_20110801_201328081_000002_08825901     0 star  filter C [ 1330.3s -  1420.3s] expo= 90s elev=34.9deg humid= 87% sunelev=-12.5deg (moon at  82.0deg phase=0.16 elev= -7.0 )
AL_20110801_201508549_000002_08825901     0 star  filter C [ 1430.8s -  1520.8s] expo= 90s elev=34.9deg humid= 87% sunelev=-12.7deg (moon at  82.0deg phase=0.16 elev= -8.0 )
AL_20110801_201649316_000002_08825901     0 star  filter R [ 1531.5s -  1621.5s] expo= 90s elev=34.9deg humid= 87% sunelev=-13.0deg (moon at  82.0deg phase=0.16 elev= -8.0 )
AL_20110801_201829784_000002_08825901     0 star  filter C [ 1632.0s -  1722.0s] expo= 90s elev=34.8deg humid= 87% sunelev=-13.2deg (moon at  82.0deg phase=0.16 elev= -8.0 )
AL_20110801_202010299_000002_08825901     0 star  filter C [ 1732.5s -  1822.5s] expo= 90s elev=34.8deg humid= 87% sunelev=-13.4deg (moon at  82.0deg phase=0.16 elev= -8.0 )
AL_20110801_202150852_000002_08825901     0 star  filter R [ 1833.0s -  1923.0s] expo= 90s elev=34.8deg humid= 87% sunelev=-13.6deg (moon at  82.0deg phase=0.16 elev= -9.0 )
AL_20110801_203611577_000002_08826001     0 star  filter R [ 2603.8s -  2783.8s] expo=180s elev=34.8deg humid= 87% sunelev=-15.3deg (moon at  82.0deg phase=0.16 elev=-11.0 )
AL_20110801_203921873_000002_08826001     0 star  filter C [ 2794.1s -  2974.1s] expo=180s elev=34.8deg humid= 87% sunelev=-15.7deg (moon at  82.0deg phase=0.16 elev=-12.0 )
AL_20110801_204542159_000002_08826001     0 star  filter R [ 3174.4s -  3354.4s] expo=180s elev=34.8deg humid= 87% sunelev=-16.5deg (moon at  82.0deg phase=0.16 elev=-13.0 )
AL_20110801_205614008_000002_08826101     0 star  filter R [ 3806.3s -  3986.3s] expo=180s elev=34.8deg humid= 86% sunelev=-17.8deg (moon at  83.0deg phase=0.16 elev=-14.0 )
AL_20110801_205924758_000002_08826101     0 star  filter C [ 3997.0s -  4177.0s] expo=180s elev=34.8deg humid= 86% sunelev=-18.2deg (moon at  83.0deg phase=0.16 elev=-15.0 )
AL_20110801_210544622_000002_08826101     0 star  filter R [ 4376.9s -  4556.9s] expo=180s elev=34.8deg humid= 85% sunelev=-18.9deg (moon at  83.0deg phase=0.16 elev=-16.0 )
AL_20110801_210954763_000002_08826201     0 star  filter C [ 4627.0s -  4807.0s] expo=180s elev=34.8deg humid= 85% sunelev=-19.4deg (moon at  83.0deg phase=0.16 elev=-17.0 )
AL_20110801_211304816_000002_08826201     0 star  filter C [ 4817.0s -  4997.0s] expo=180s elev=34.8deg humid= 85% sunelev=-19.7deg (moon at  83.0deg phase=0.16 elev=-17.0 )
AL_20110801_211614817_000002_08826201     0 star  filter R [ 5007.1s -  5187.1s] expo=180s elev=34.8deg humid= 84% sunelev=-20.1deg (moon at  83.0deg phase=0.16 elev=-18.0 )
AL_20110801_212234463_000002_08826201     0 star  filter C [ 5386.7s -  5566.7s] expo=180s elev=34.8deg humid= 84% sunelev=-20.7deg (moon at  83.0deg phase=0.16 elev=-19.0 )
AL_20110801_212544494_000002_08826201     0 star  filter R [ 5576.7s -  5756.7s] expo=180s elev=34.8deg humid= 84% sunelev=-21.1deg (moon at  83.0deg phase=0.16 elev=-19.0 )
AL_20110801_212957150_000002_08826301     0 star  filter C [ 5829.4s -  6009.4s] expo=180s elev=34.9deg humid= 84% sunelev=-21.5deg (moon at  83.0deg phase=0.16 elev=-20.0 )
AL_20110801_213307671_000002_08826301     0 star  filter C [ 6019.9s -  6199.9s] expo=180s elev=34.9deg humid= 84% sunelev=-21.8deg (moon at  83.0deg phase=0.16 elev=-20.0 )
AL_20110801_213617468_000002_08826301     0 star  filter R [ 6209.7s -  6389.7s] expo=180s elev=34.9deg humid= 84% sunelev=-22.1deg (moon at  83.0deg phase=0.16 elev=-21.0 )
AL_20110801_213927781_000002_08826301     0 star  filter C [ 6400.0s -  6580.0s] expo=180s elev=34.9deg humid= 84% sunelev=-22.4deg (moon at  83.0deg phase=0.16 elev=-21.0 )
AL_20110801_215309635_000002_08826401     0 star  filter C [ 7221.9s -  7401.9s] expo=180s elev=35.0deg humid= 85% sunelev=-23.6deg (moon at  83.0deg phase=0.16 elev=-23.0 )
AL_20110801_215619932_000002_08826401     0 star  filter R [ 7412.2s -  7592.2s] expo=180s elev=35.1deg humid= 84% sunelev=-23.9deg (moon at  83.0deg phase=0.16 elev=-24.0 )
AL_20110801_215929978_000002_08826401     0 star  filter C [ 7602.2s -  7782.2s] expo=180s elev=35.1deg humid= 84% sunelev=-24.1deg (moon at  83.0deg phase=0.16 elev=-24.0 )
AL_20110801_220240485_000002_08826401     0 star  filter C [ 7792.7s -  7972.7s] expo=180s elev=35.1deg humid= 84% sunelev=-24.4deg (moon at  83.0deg phase=0.16 elev=-25.0 )
AL_20110801_220550282_000002_08826401     0 star  filter R [ 7982.5s -  8162.5s] expo=180s elev=35.2deg humid= 84% sunelev=-24.6deg (moon at  83.0deg phase=0.16 elev=-25.0 )
AL_20110801_221002032_000002_08826501     0 star  filter C [ 8234.3s -  8414.3s] expo=180s elev=35.2deg humid= 84% sunelev=-24.9deg (moon at  83.0deg phase=0.16 elev=-26.0 )
AL_20110801_221313005_000002_08826501     0 star  filter C [ 8425.2s -  8605.2s] expo=180s elev=35.2deg humid= 84% sunelev=-25.2deg (moon at  83.0deg phase=0.16 elev=-26.0 )
AL_20110801_221623506_000002_08826501     0 star  filter R [ 8615.8s -  8795.8s] expo=180s elev=35.3deg humid= 84% sunelev=-25.4deg (moon at  83.0deg phase=0.16 elev=-27.0 )
AL_20110801_221934474_000002_08826501     0 star  filter C [ 8806.7s -  8986.7s] expo=180s elev=35.3deg humid= 83% sunelev=-25.6deg (moon at  83.0deg phase=0.16 elev=-27.0 )
AL_20110801_222244510_000002_08826501     0 star  filter C [ 8996.8s -  9176.8s] expo=180s elev=35.4deg humid= 83% sunelev=-25.8deg (moon at  83.0deg phase=0.16 elev=-28.0 )
AL_20110801_222555058_000002_08826501     0 star  filter R [ 9187.3s -  9367.3s] expo=180s elev=35.4deg humid= 83% sunelev=-26.0deg (moon at  83.0deg phase=0.16 elev=-28.0 )
AL_20110801_223623843_000002_08826601     0 star  filter R [ 9816.1s -  9996.1s] expo=180s elev=35.6deg humid= 83% sunelev=-26.6deg (moon at  83.0deg phase=0.16 elev=-30.0 )
AL_20110801_223933672_000002_08826601     0 star  filter C [10005.9s - 10185.9s] expo=180s elev=35.6deg humid= 83% sunelev=-26.8deg (moon at  83.0deg phase=0.16 elev=-30.0 )
AL_20110801_224554007_000002_08826601     0 star  filter R [10386.2s - 10566.2s] expo=180s elev=35.7deg humid= 82% sunelev=-27.1deg (moon at  83.0deg phase=0.16 elev=-31.0 )
AL_20110801_225316043_000002_08826701     0 star  filter C [10828.3s - 11008.3s] expo=180s elev=35.8deg humid= 82% sunelev=-27.4deg (moon at  83.0deg phase=0.16 elev=-32.0 )
AL_20110801_225626073_000002_08826701     0 star  filter R [11018.3s - 11198.3s] expo=180s elev=35.9deg humid= 82% sunelev=-27.5deg (moon at  83.0deg phase=0.16 elev=-32.0 )
AL_20110801_230247062_000002_08826701     0 star  filter C [11399.3s - 11579.3s] expo=180s elev=36.0deg humid= 81% sunelev=-27.7deg (moon at  83.0deg phase=0.17 elev=-33.0 )
AL_20110801_230556876_000002_08826701     0 star  filter R [11589.1s - 11769.1s] expo=180s elev=36.1deg humid= 80% sunelev=-27.8deg (moon at  83.0deg phase=0.17 elev=-33.0 )
AL_20110801_231011188_000002_08826801    46 stars filter C [11843.4s - 12023.4s] expo=180s elev=36.2deg humid= 80% sunelev=-27.9deg (moon at  83.0deg phase=0.17 elev=-34.0 )
AL_20110801_231321005_000002_08826801    46 stars filter C [12033.2s - 12213.2s] expo=180s elev=36.2deg humid= 81% sunelev=-28.0deg (moon at  83.0deg phase=0.17 elev=-34.0 )
AL_20110801_231631052_000002_08826801    39 stars filter R [12223.3s - 12403.3s] expo=180s elev=36.3deg humid= 81% sunelev=-28.1deg (moon at  83.0deg phase=0.17 elev=-35.0 )
AL_20110801_231941067_000002_08826801    47 stars filter C [12413.3s - 12593.3s] expo=180s elev=36.4deg humid= 81% sunelev=-28.1deg (moon at  83.0deg phase=0.17 elev=-35.0 )
AL_20110801_232251119_000002_08826801    44 stars filter C [12603.4s - 12783.4s] expo=180s elev=36.4deg humid= 82% sunelev=-28.2deg (moon at  83.0deg phase=0.17 elev=-35.0 )
AL_20110801_232601385_000002_08826801    41 stars filter R [12793.6s - 12973.6s] expo=180s elev=36.5deg humid= 82% sunelev=-28.2deg (moon at  83.0deg phase=0.17 elev=-36.0 )
AL_20110801_233018713_000002_08826901    47 stars filter C [13050.9s - 13230.9s] expo=180s elev=36.6deg humid= 82% sunelev=-28.3deg (moon at  83.0deg phase=0.17 elev=-36.0 )
AL_20110801_233328532_000002_08826901    44 stars filter C [13240.8s - 13420.8s] expo=180s elev=36.7deg humid= 82% sunelev=-28.3deg (moon at  83.0deg phase=0.17 elev=-37.0 )
AL_20110801_233639299_000002_08826901    40 stars filter R [13431.5s - 13611.5s] expo=180s elev=36.7deg humid= 82% sunelev=-28.3deg (moon at  83.0deg phase=0.17 elev=-37.0 )
AL_20110801_233949767_000002_08826901    45 stars filter C [13622.0s - 13802.0s] expo=180s elev=36.8deg humid= 82% sunelev=-28.3deg (moon at  83.0deg phase=0.17 elev=-37.0 )
AL_20110801_234300038_000002_08826901    44 stars filter C [13812.3s - 13992.3s] expo=180s elev=36.9deg humid= 83% sunelev=-28.3deg (moon at  83.0deg phase=0.17 elev=-38.0 )
AL_20110801_234610302_000002_08826901    42 stars filter R [14002.6s - 14182.6s] expo=180s elev=37.0deg humid= 82% sunelev=-28.3deg (moon at  83.0deg phase=0.17 elev=-38.0 )
AL_20110801_235011396_000002_08827001    45 stars filter C [14243.6s - 14423.6s] expo=180s elev=37.1deg humid= 82% sunelev=-28.3deg (moon at  83.0deg phase=0.17 elev=-38.0 )
AL_20110801_235321462_000002_08827001    49 stars filter C [14433.7s - 14613.7s] expo=180s elev=37.1deg humid= 82% sunelev=-28.2deg (moon at  84.0deg phase=0.17 elev=-39.0 )
AL_20110801_235631243_000002_08827001    45 stars filter R [14623.5s - 14803.5s] expo=180s elev=37.2deg humid= 82% sunelev=-28.2deg (moon at  84.0deg phase=0.17 elev=-39.0 )
AL_20110801_235941323_000002_08827001    47 stars filter C [14813.5s - 14993.5s] expo=180s elev=37.3deg humid= 82% sunelev=-28.1deg (moon at  84.0deg phase=0.17 elev=-39.0 )
AL_20110802_000251797_000002_08827001    44 stars filter C [15004.0s - 15184.0s] expo=180s elev=37.4deg humid= 81% sunelev=-28.1deg (moon at  84.0deg phase=0.17 elev=-39.0 )
AL_20110802_000602078_000002_08827001    38 stars filter R [15194.3s - 15374.3s] expo=180s elev=37.5deg humid= 81% sunelev=-28.0deg (moon at  84.0deg phase=0.17 elev=-40.0 )
AL_20110802_001013579_000002_08827101    48 stars filter C [15445.8s - 15625.8s] expo=180s elev=37.6deg humid= 82% sunelev=-27.9deg (moon at  84.0deg phase=0.17 elev=-40.0 )
AL_20110802_001323412_000002_08827101    46 stars filter C [15635.6s - 15815.6s] expo=180s elev=37.7deg humid= 81% sunelev=-27.8deg (moon at  84.0deg phase=0.17 elev=-40.0 )
AL_20110802_001633239_000002_08827101    44 stars filter R [15825.5s - 16005.5s] expo=180s elev=37.7deg humid= 82% sunelev=-27.7deg (moon at  84.0deg phase=0.17 elev=-40.0 )
AL_20110802_001943739_000002_08827101    47 stars filter C [16016.0s - 16196.0s] expo=180s elev=37.8deg humid= 81% sunelev=-27.6deg (moon at  84.0deg phase=0.17 elev=-41.0 )
AL_20110802_002254697_000002_08827101    47 stars filter C [16206.9s - 16386.9s] expo=180s elev=37.9deg humid= 81% sunelev=-27.5deg (moon at  84.0deg phase=0.17 elev=-41.0 )
AL_20110802_002605229_000002_08827101    42 stars filter R [16397.4s - 16577.4s] expo=180s elev=38.0deg humid= 81% sunelev=-27.4deg (moon at  84.0deg phase=0.17 elev=-41.0 )
AL_20110802_003624158_000002_08827201    46 stars filter C [17016.4s - 17196.4s] expo=180s elev=38.3deg humid= 81% sunelev=-27.0deg (moon at  84.0deg phase=0.17 elev=-42.0 )
AL_20110802_003934203_000002_08827201    41 stars filter R [17206.5s - 17386.5s] expo=180s elev=38.4deg humid= 82% sunelev=-26.8deg (moon at  84.0deg phase=0.17 elev=-42.0 )
AL_20110802_004244256_000002_08827201    36 stars filter V [17396.5s - 17576.5s] expo=180s elev=38.5deg humid= 82% sunelev=-26.7deg (moon at  84.0deg phase=0.17 elev=-42.0 )
AL_20110802_010109057_000002_08827301    46 stars filter C [18501.3s - 18681.3s] expo=180s elev=39.1deg humid= 81% sunelev=-25.6deg (moon at  84.0deg phase=0.17 elev=-43.0 )
AL_20110802_010419079_000002_08827301    41 stars filter R [18691.3s - 18871.3s] expo=180s elev=39.2deg humid= 81% sunelev=-25.4deg (moon at  84.0deg phase=0.17 elev=-43.0 )
AL_20110802_010728906_000002_08827301    36 stars filter V [18881.1s - 19061.1s] expo=180s elev=39.3deg humid= 80% sunelev=-25.1deg (moon at  84.0deg phase=0.17 elev=-43.0 )
AL_20110802_012608166_000002_08827401    45 stars filter C [20000.4s - 20180.4s] expo=180s elev=39.9deg humid= 82% sunelev=-23.7deg (moon at  84.0deg phase=0.17 elev=-43.0 )
AL_20110802_012918432_000002_08827401    40 stars filter R [20190.7s - 20370.7s] expo=180s elev=40.0deg humid= 82% sunelev=-23.4deg (moon at  84.0deg phase=0.17 elev=-43.0 )
AL_20110802_013229406_000002_08827401    38 stars filter V [20381.6s - 20561.6s] expo=180s elev=40.1deg humid= 82% sunelev=-23.2deg (moon at  84.0deg phase=0.17 elev=-43.0 )
AL_20110802_015053131_000002_08827501    48 stars filter C [21485.4s - 21665.4s] expo=180s elev=40.8deg humid= 81% sunelev=-21.4deg (moon at  84.0deg phase=0.18 elev=-43.0 )
AL_20110802_015403415_000002_08827501    37 stars filter R [21675.6s - 21855.6s] expo=180s elev=40.9deg humid= 81% sunelev=-21.1deg (moon at  84.0deg phase=0.18 elev=-43.0 )
AL_20110802_015714385_000002_08827501    37 stars filter V [21866.6s - 22046.6s] expo=180s elev=41.0deg humid= 81% sunelev=-20.8deg (moon at  84.0deg phase=0.18 elev=-43.0 )
AL_20110802_021541926_000002_08827601    42 stars filter C [22974.2s - 23154.2s] expo=180s elev=41.7deg humid= 81% sunelev=-18.8deg (moon at  84.0deg phase=0.18 elev=-42.0 )
AL_20110802_021852676_000002_08827601    42 stars filter R [23164.9s - 23344.9s] expo=180s elev=41.8deg humid= 81% sunelev=-18.4deg (moon at  84.0deg phase=0.18 elev=-42.0 )
AL_20110802_022202478_000002_08827601    36 stars filter V [23354.7s - 23534.7s] expo=180s elev=42.0deg humid= 81% sunelev=-18.0deg (moon at  84.0deg phase=0.18 elev=-42.0 )
AL_20110802_024032421_000002_08827701    45 stars filter C [24464.7s - 24644.7s] expo=180s elev=42.7deg humid= 82% sunelev=-15.8deg (moon at  84.0deg phase=0.18 elev=-41.0 )
AL_20110802_024342272_000002_08827701    38 stars filter R [24654.5s - 24834.5s] expo=180s elev=42.8deg humid= 82% sunelev=-15.4deg (moon at  84.0deg phase=0.18 elev=-41.0 )
AL_20110802_024652271_000002_08827701    31 stars filter V [24844.5s - 25024.5s] expo=180s elev=42.9deg humid= 83% sunelev=-15.0deg (moon at  84.0deg phase=0.18 elev=-41.0 )
AL_20110802_030530421_000002_08827801    31 stars filter C [25962.6s - 26142.6s] expo=180s elev=43.6deg humid= 82% sunelev=-12.5deg (moon at  85.0deg phase=0.18 elev=-39.0 )
AL_20110802_030840484_000002_08827801    25 stars filter R [26152.7s - 26332.7s] expo=180s elev=43.8deg humid= 82% sunelev=-12.0deg (moon at  85.0deg phase=0.18 elev=-39.0 )
AL_20110802_031150739_000002_08827801    18 stars filter V [26343.0s - 26523.0s] expo=180s elev=43.9deg humid= 83% sunelev=-11.6deg (moon at  85.0deg phase=0.18 elev=-39.0 )
AL_20110802_033010870_000002_08827901     0 star  filter C [27443.1s - 27623.1s] expo=180s elev=44.6deg humid= 83% sunelev=-9.0deg (moon at  85.0deg phase=0.18 elev=-37.0 )
AL_20110802_033632124_000002_08827901     0 star  filter V [27824.4s - 28004.4s] expo=180s elev=44.8deg humid= 83% sunelev=-8.0deg (moon at  85.0deg phase=0.18 elev=-36.0 )
Informations from GCN notice:
This is a GRB
Date of GRB : 2455775.3261920139 2011-08-01T19:49:42.990
Date of notice : 2455775.3267708332 2011-08-01T19:50:32.999
Refined position : yes (error radius=2.3 arcsec)
RA(J2000.0) : 89.437500 05h57m45s0
DEC(J2000.0) : 80.956000 +80d57m21s60
Error box : x=38:40 y=29:31 (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=132.578630 lat=24.685417
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.080
Assuming Rv=3.1: Av=0.267 Ar=0.215 Ai=0.156
extmap.fit: Extinction map E(B-V) from Schlegel:

Field of View is about 72 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 110801: 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 110801 detected by SWIFT
(trigger 458521) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 65.3s after the GRB trigger
(15.1s after the notice). The elevation of the field decreased from
35 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2011-08-01T19:49:42.815

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+65.3s to t0+125.3s : R > 15.1

The second image is 90.0s exposure in tracking mode:
t0+877.4s to t0+967.4s : R > 16.2

We co-added a series of exposures:
t0+877.4s to t0+1621.5s : 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 65.3s 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=132.5786 lat=+24.6854
and the galactic extinction in R band is 0.2 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

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