GRB110905_061614_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20110905_203111163_000002_15903801   109 stars filter C [593214.5s - 593394.5s] expo=180s elev=24.4deg humid= 57% sunelev=-25.0deg (moon at  12.0deg phase=0.58 elev=+16.0 )
AL_20110905_203421679_000002_15903801    93 stars filter C [593405.0s - 593585.0s] expo=180s elev=24.2deg humid= 57% sunelev=-25.5deg (moon at  12.0deg phase=0.58 elev=+15.0 )
AL_20110905_203732383_000002_15903801   107 stars filter R [593595.7s - 593775.7s] expo=180s elev=24.0deg humid= 56% sunelev=-25.9deg (moon at  12.0deg phase=0.58 elev=+15.0 )
AL_20110905_204042919_000002_15903801    93 stars filter C [593786.3s - 593966.3s] expo=180s elev=23.8deg humid= 57% sunelev=-26.4deg (moon at  12.0deg phase=0.58 elev=+15.0 )
AL_20110905_204353903_000002_15903801   119 stars filter C [593977.2s - 594157.2s] expo=180s elev=23.6deg humid= 57% sunelev=-26.8deg (moon at  12.0deg phase=0.58 elev=+14.0 )
AL_20110905_204705013_000002_15903801   108 stars filter R [594168.4s - 594348.4s] expo=180s elev=23.3deg humid= 57% sunelev=-27.2deg (moon at  12.0deg phase=0.58 elev=+14.0 )
AL_20110905_205124503_000002_15903901   111 stars filter C [594427.8s - 594607.8s] expo=180s elev=23.0deg humid= 57% sunelev=-27.8deg (moon at  12.0deg phase=0.58 elev=+14.0 )
AL_20110905_205435487_000002_15903901   111 stars filter C [594618.8s - 594798.8s] expo=180s elev=22.7deg humid= 58% sunelev=-28.2deg (moon at  12.0deg phase=0.58 elev=+13.0 )
AL_20110905_205746424_000002_15903901    75 stars filter R [594809.8s - 594989.8s] expo=180s elev=22.5deg humid= 58% sunelev=-28.6deg (moon at  12.0deg phase=0.58 elev=+13.0 )
AL_20110905_210057367_000002_15903901   125 stars filter C [595000.7s - 595180.7s] expo=180s elev=22.2deg humid= 58% sunelev=-29.0deg (moon at  12.0deg phase=0.58 elev=+13.0 )
AL_20110905_210408336_000002_15903901   115 stars filter C [595191.7s - 595371.7s] expo=180s elev=21.9deg humid= 58% sunelev=-29.4deg (moon at  12.0deg phase=0.58 elev=+12.0 )
AL_20110905_210719321_000002_15903901   106 stars filter R [595382.7s - 595562.7s] expo=180s elev=21.7deg humid= 58% sunelev=-29.8deg (moon at  12.0deg phase=0.58 elev=+12.0 )
AL_20110905_211125746_000002_15904001   112 stars filter C [595629.1s - 595809.1s] expo=180s elev=21.3deg humid= 58% sunelev=-30.3deg (moon at  12.0deg phase=0.58 elev=+12.0 )
AL_20110905_211436012_000002_15904001   110 stars filter C [595819.4s - 595999.4s] expo=180s elev=21.0deg humid= 58% sunelev=-30.7deg (moon at  12.0deg phase=0.58 elev=+11.0 )
AL_20110905_211747013_000002_15904001   108 stars filter R [596010.3s - 596190.3s] expo=180s elev=20.7deg humid= 58% sunelev=-31.1deg (moon at  12.0deg phase=0.58 elev=+11.0 )
AL_20110905_212057973_000002_15904001   101 stars filter C [596201.3s - 596381.3s] expo=180s elev=20.4deg humid= 58% sunelev=-31.4deg (moon at  12.0deg phase=0.58 elev=+10.0 )
AL_20110905_212407989_000002_15904001   124 stars filter C [596391.4s - 596571.4s] expo=180s elev=20.1deg humid= 57% sunelev=-31.8deg (moon at  12.0deg phase=0.58 elev=+10.0 )
AL_20110905_212718270_000002_15904001   106 stars filter R [596581.6s - 596761.6s] expo=180s elev=19.8deg humid= 57% sunelev=-32.1deg (moon at  12.0deg phase=0.58 elev=+10.0 )
AL_20110905_213121677_000002_15904101   110 stars filter C [596825.0s - 597005.0s] expo=180s elev=19.4deg humid= 57% sunelev=-32.6deg (moon at  12.0deg phase=0.58 elev= +9.0 )
AL_20110905_213431959_000002_15904101   109 stars filter C [597015.3s - 597195.3s] expo=180s elev=19.0deg humid= 56% sunelev=-32.9deg (moon at  12.0deg phase=0.58 elev= +9.0 )
AL_20110905_213742709_000002_15904101    80 stars filter R [597206.0s - 597386.0s] expo=180s elev=18.7deg humid= 56% sunelev=-33.2deg (moon at  12.0deg phase=0.58 elev= +8.0 )
AL_20110905_214053450_000002_15904101   120 stars filter C [597396.8s - 597576.8s] expo=180s elev=18.3deg humid= 56% sunelev=-33.6deg (moon at  12.0deg phase=0.58 elev= +8.0 )
AL_20110905_214403481_000002_15904101   117 stars filter C [597586.8s - 597766.8s] expo=180s elev=18.0deg humid= 56% sunelev=-33.9deg (moon at  12.0deg phase=0.58 elev= +8.0 )
AL_20110905_214714450_000002_15904101    99 stars filter R [597777.8s - 597957.8s] expo=180s elev=17.6deg humid= 56% sunelev=-34.2deg (moon at  12.0deg phase=0.58 elev= +7.0 )
AL_20110905_215121095_000002_15904201   110 stars filter C [598024.4s - 598204.4s] expo=180s elev=17.2deg humid= 57% sunelev=-34.6deg (moon at  12.0deg phase=0.58 elev= +7.0 )
AL_20110905_215431376_000002_15904201    95 stars filter C [598214.7s - 598394.7s] expo=180s elev=16.8deg humid= 57% sunelev=-34.9deg (moon at  12.0deg phase=0.58 elev= +6.0 )
AL_20110905_215741188_000002_15904201   101 stars filter R [598404.5s - 598584.5s] expo=180s elev=16.4deg humid= 57% sunelev=-35.2deg (moon at  12.0deg phase=0.58 elev= +6.0 )
AL_20110905_220051239_000002_15904201    92 stars filter C [598594.6s - 598774.6s] expo=180s elev=16.1deg humid= 57% sunelev=-35.4deg (moon at  12.0deg phase=0.58 elev= +6.0 )
AL_20110905_220402177_000002_15904201   107 stars filter C [598785.5s - 598965.5s] expo=180s elev=15.7deg humid= 57% sunelev=-35.7deg (moon at  12.0deg phase=0.58 elev= +5.0 )
AL_20110905_220713161_000002_15904201    94 stars filter R [598976.5s - 599156.5s] expo=180s elev=15.3deg humid= 57% sunelev=-36.0deg (moon at  12.0deg phase=0.58 elev= +5.0 )
AL_20110905_221123103_000002_15904301   110 stars filter C [599226.4s - 599406.4s] expo=180s elev=14.8deg humid= 55% sunelev=-36.3deg (moon at  11.0deg phase=0.58 elev= +4.0 )
AL_20110905_221433337_000002_15904301   110 stars filter C [599416.7s - 599596.7s] expo=180s elev=14.4deg humid= 54% sunelev=-36.5deg (moon at  11.0deg phase=0.58 elev= +4.0 )
AL_20110905_221744323_000002_15904301    76 stars filter R [599607.7s - 599787.7s] expo=180s elev=14.0deg humid= 55% sunelev=-36.8deg (moon at  11.0deg phase=0.58 elev= +3.0 )
AL_20110905_222054594_000002_15904301   107 stars filter C [599797.9s - 599977.9s] expo=180s elev=13.6deg humid= 55% sunelev=-37.0deg (moon at  11.0deg phase=0.58 elev= +3.0 )
AL_20110905_222405563_000002_15904301    99 stars filter C [599988.9s - 600168.9s] expo=180s elev=13.2deg humid= 56% sunelev=-37.2deg (moon at  11.0deg phase=0.58 elev= +2.0 )
AL_20110905_222716735_000002_15904301    78 stars filter R [600180.1s - 600360.1s] expo=180s elev=12.8deg humid= 56% sunelev=-37.4deg (moon at  11.0deg phase=0.58 elev= +2.0 )
AL_20110905_223127128_000002_15904401    98 stars filter C [600430.5s - 600610.5s] expo=180s elev=12.2deg humid= 57% sunelev=-37.7deg (moon at  11.0deg phase=0.58 elev= +1.0 )
AL_20110905_223437645_000002_15904401    96 stars filter C [600621.0s - 600801.0s] expo=180s elev=11.8deg humid= 57% sunelev=-37.9deg (moon at  11.0deg phase=0.58 elev= +1.0 )
AL_20110905_223748597_000002_15904401    77 stars filter R [600812.0s - 600992.0s] expo=180s elev=11.3deg humid= 56% sunelev=-38.0deg (moon at  11.0deg phase=0.58 elev= +0.0 )
AL_20110905_224058649_000002_15904401    80 stars filter C [601002.0s - 601182.0s] expo=180s elev=10.9deg humid= 56% sunelev=-38.2deg (moon at  11.0deg phase=0.58 elev= +0.0 )
AL_20110905_224408930_000002_15904401    98 stars filter C [601192.3s - 601372.3s] expo=180s elev=10.5deg humid= 56% sunelev=-38.4deg (moon at  11.0deg phase=0.58 elev= +0.0 )
AL_20110905_224719883_000002_15904401    86 stars filter R [601383.2s - 601563.2s] expo=180s elev=10.0deg humid= 56% sunelev=-38.5deg (moon at  11.0deg phase=0.58 elev= +0.0 )
AL_20110905_225129528_000002_15904501    70 stars filter C [601632.9s - 601812.9s] expo=180s elev= 9.5deg humid= 55% sunelev=-38.7deg (moon at  11.0deg phase=0.58 elev= +0.0 )
AL_20110905_225439856_000002_15904501    85 stars filter C [601823.2s - 602003.2s] expo=180s elev= 9.0deg humid= 55% sunelev=-38.8deg (moon at  11.0deg phase=0.58 elev= -1.0 )
AL_20110905_225750137_000002_15904501    63 stars filter R [602013.4s - 602193.4s] expo=180s elev= 8.6deg humid= 54% sunelev=-38.9deg (moon at  11.0deg phase=0.58 elev= -1.0 )
AL_20110905_230100860_000002_15904501    77 stars filter C [602204.2s - 602384.2s] expo=180s elev= 8.1deg humid= 55% sunelev=-39.0deg (moon at  11.0deg phase=0.58 elev= -2.0 )
AL_20110905_230411143_000002_15904501    67 stars filter C [602394.5s - 602574.5s] expo=180s elev= 7.6deg humid= 54% sunelev=-39.1deg (moon at  11.0deg phase=0.58 elev= -2.0 )
AL_20110905_230721174_000002_15904501    62 stars filter R [602584.5s - 602764.5s] expo=180s elev= 7.2deg humid= 54% sunelev=-39.2deg (moon at  11.0deg phase=0.58 elev= -3.0 )
AL_20110905_231131290_000002_15904601    59 stars filter C [602834.6s - 603014.6s] expo=180s elev= 6.6deg humid= 53% sunelev=-39.3deg (moon at  11.0deg phase=0.58 elev= -3.0 )
AL_20110905_231442070_000002_15904601    43 stars filter C [603025.4s - 603205.4s] expo=180s elev= 6.1deg humid= 54% sunelev=-39.4deg (moon at  11.0deg phase=0.58 elev= -4.0 )
AL_20110905_231752087_000002_15904601    33 stars filter R [603215.4s - 603395.4s] expo=180s elev= 5.6deg humid= 54% sunelev=-39.4deg (moon at  11.0deg phase=0.58 elev= -4.0 )
AL_20110905_232102809_000002_15904601    37 stars filter C [603406.2s - 603586.2s] expo=180s elev= 5.2deg humid= 53% sunelev=-39.5deg (moon at  11.0deg phase=0.58 elev= -5.0 )
AL_20110905_232413076_000002_15904601     0 star  filter C [603596.4s - 603776.4s] expo=180s elev= 4.7deg humid= 53% sunelev=-39.5deg (moon at  11.0deg phase=0.58 elev= -5.0 )
AL_20110905_232724045_000002_15904601    20 stars filter R [603787.4s - 603967.4s] expo=180s elev= 4.2deg humid= 53% sunelev=-39.5deg (moon at  11.0deg phase=0.58 elev= -6.0 )
AL_20110905_233615409_000002_15904701    26 stars filter C [604318.8s - 604498.8s] expo=180s elev= 2.9deg humid= 52% sunelev=-39.5deg (moon at  11.0deg phase=0.58 elev= -7.0 )
AL_20110905_234236194_000002_15904701     8 stars filter V [604699.5s - 604879.5s] expo=180s elev= 2.0deg humid= 53% sunelev=-39.5deg (moon at  11.0deg phase=0.58 elev= -8.0 )
AL_20110906_000057983_000002_15904801     0 star  filter R [605801.3s - 605981.3s] expo=180s elev=-1.3deg humid= 52% sunelev=-39.1deg (moon at  11.0deg phase=0.58 elev=-11.0 )
AL_20110906_000408733_000002_15904801     0 star  filter V [605992.0s - 606172.0s] expo=180s elev=-1.8deg humid= 52% sunelev=-39.0deg (moon at  11.0deg phase=0.58 elev=-12.0 )
Informations from GCN notice:
This is a GRB
Date of GRB : 2455803.4869449073 2011-08-29T23:41:12.039
Date of notice : 2455803.4898379631 2011-08-29T23:45:22.000
Refined position : no
RA(J2000.0) : 278.721000 18h34m53s0
DEC(J2000.0) : -8.751000 -08d45m03s59
Error box : x=302:412 y=11688:11798 (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=13.957033 lat=-5.372982
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=0.972
Assuming Rv=3.1: Av=3.221 Ar=2.597 Ai=1.885
extmap.fit: Extinction map E(B-V) from Schlegel:

Field of View is about 58 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 110905: 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 110905 detected by SWIFT
(trigger 501752) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 593214.5s after the GRB trigger
(592964.1s after the notice). The elevation of the field decreased from
24 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2011-08-29T23:41:11.616

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+593214.5s to t0+593394.5s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+593405.0s to t0+593585.0s : R > 16.2

We co-added a series of exposures:
t0+593405.0s to t0+594607.8s : 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 593214.5s 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= 13.9570 lat= -5.3730
and the galactic extinction in R band is 2.6 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.
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