GRB091127_232712_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20091127_234443162_252233_59725500     0 star  filter C [  950.2s -  1130.2s] expo=180s elev=20.5deg humid= 53% sunelev=-67.0deg (moon at  39.0deg phase=0.69 elev=+25.0 )
AL_20091127_234759052_252233_59725500     0 star  filter C [ 1146.2s -  1326.2s] expo=180s elev=20.1deg humid= 52% sunelev=-66.8deg (moon at  39.0deg phase=0.69 elev=+24.0 )
AL_20091127_235117818_252233_59725500     0 star  filter R [ 1345.2s -  1525.2s] expo=180s elev=19.8deg humid= 51% sunelev=-66.7deg (moon at  39.0deg phase=0.69 elev=+24.0 )
AL_20091127_235437447_252233_59725500     0 star  filter C [ 1545.2s -  1725.2s] expo=180s elev=19.4deg humid= 52% sunelev=-66.5deg (moon at  39.0deg phase=0.69 elev=+23.0 )
AL_20091127_235756510_252233_59725500     0 star  filter C [ 1744.2s -  1924.2s] expo=180s elev=19.1deg humid= 53% sunelev=-66.3deg (moon at  39.0deg phase=0.69 elev=+23.0 )
AL_20091128_000115322_252233_59725500     0 star  filter R [ 1943.2s -  2123.2s] expo=180s elev=18.7deg humid= 51% sunelev=-66.0deg (moon at  39.0deg phase=0.69 elev=+22.0 )
AL_20091128_001325959_252235_59725700     0 star  filter C [ 2673.2s -  2853.2s] expo=180s elev=17.4deg humid= 47% sunelev=-65.1deg (moon at  39.0deg phase=0.69 elev=+20.0 )
AL_20091128_001641849_252235_59725700     0 star  filter C [ 2869.2s -  3049.2s] expo=180s elev=17.0deg humid= 44% sunelev=-64.8deg (moon at  39.0deg phase=0.69 elev=+19.0 )
AL_20091128_002000709_252235_59725700     0 star  filter R [ 3068.2s -  3248.2s] expo=180s elev=16.6deg humid= 44% sunelev=-64.4deg (moon at  39.0deg phase=0.69 elev=+19.0 )
AL_20091128_002320230_252235_59725700     0 star  filter C [ 3267.2s -  3447.2s] expo=180s elev=16.2deg humid= 43% sunelev=-64.1deg (moon at  39.0deg phase=0.69 elev=+18.0 )
AL_20091128_002958292_252235_59725700     0 star  filter R [ 3666.2s -  3846.2s] expo=180s elev=15.4deg humid= 45% sunelev=-63.4deg (moon at  39.0deg phase=0.69 elev=+17.0 )
AL_20091128_005101869_252237_59725900     0 star  filter C [ 4929.2s -  5109.2s] expo=180s elev=12.7deg humid= 51% sunelev=-60.9deg (moon at  39.0deg phase=0.69 elev=+13.0 )
AL_20091128_005421188_252237_59725900     0 star  filter C [ 5129.2s -  5309.2s] expo=180s elev=12.2deg humid= 53% sunelev=-60.4deg (moon at  39.0deg phase=0.69 elev=+13.0 )
AL_20091128_005737485_252237_59725900     0 star  filter R [ 5325.2s -  5505.2s] expo=180s elev=11.8deg humid= 53% sunelev=-60.0deg (moon at  39.0deg phase=0.69 elev=+12.0 )
AL_20091128_010053406_252237_59725900     0 star  filter C [ 5521.2s -  5701.2s] expo=180s elev=11.4deg humid= 53% sunelev=-59.5deg (moon at  39.0deg phase=0.69 elev=+12.0 )
AL_20091128_010412662_252237_59725900     1 star  filter C [ 5720.2s -  5900.2s] expo=180s elev=10.9deg humid= 51% sunelev=-59.1deg (moon at  39.0deg phase=0.69 elev=+11.0 )
AL_20091128_010731521_252237_59725900     3 stars filter R [ 5919.2s -  6099.2s] expo=180s elev=10.4deg humid= 50% sunelev=-58.6deg (moon at  39.0deg phase=0.69 elev=+11.0 )
AL_20091128_012848534_252239_59726100     3 stars filter C [ 7196.2s -  7376.2s] expo=180s elev= 7.4deg humid= 49% sunelev=-55.4deg (moon at  39.0deg phase=0.69 elev= +7.0 )
AL_20091128_013208081_252239_59726100     4 stars filter C [ 7395.2s -  7575.2s] expo=180s elev= 6.9deg humid= 47% sunelev=-54.9deg (moon at  39.0deg phase=0.69 elev= +6.0 )
AL_20091128_013523931_252239_59726100     1 star  filter R [ 7591.2s -  7771.2s] expo=180s elev= 6.4deg humid= 49% sunelev=-54.3deg (moon at  39.0deg phase=0.69 elev= +6.0 )
AL_20091128_013842728_252239_59726100     4 stars filter C [ 7790.2s -  7970.2s] expo=180s elev= 5.9deg humid= 47% sunelev=-53.8deg (moon at  39.0deg phase=0.69 elev= +5.0 )
AL_20091128_014201900_252239_59726100     3 stars filter C [ 7989.2s -  8169.2s] expo=180s elev= 5.4deg humid= 45% sunelev=-53.3deg (moon at  39.0deg phase=0.69 elev= +5.0 )
AL_20091128_014521281_252239_59726100     1 star  filter R [ 8189.2s -  8369.2s] expo=180s elev= 4.9deg humid= 45% sunelev=-52.7deg (moon at  39.0deg phase=0.69 elev= +4.0 )
AL_20091128_171409397_252166_59718800     0 star  filter V [63917.2s - 64097.2s] expo=180s elev= 4.6deg humid= 37% sunelev=-13.3deg (moon at  36.0deg phase=0.74 elev=+40.0 )
AL_20091128_171725444_252166_59718800     0 star  filter R [64113.2s - 64293.2s] expo=180s elev= 5.1deg humid= 37% sunelev=-13.8deg (moon at  36.0deg phase=0.74 elev=+41.0 )
AL_20091128_172044705_252166_59718800     1 star  filter I [64312.2s - 64492.2s] expo=180s elev= 5.5deg humid= 36% sunelev=-14.4deg (moon at  36.0deg phase=0.74 elev=+41.0 )
AL_20091128_181721549_252167_59718900     0 star  filter V [67709.2s - 67889.2s] expo=180s elev=13.5deg humid= 26% sunelev=-24.4deg (moon at  36.0deg phase=0.75 elev=+50.0 )
AL_20091128_182040747_252167_59718900     0 star  filter R [67908.2s - 68088.2s] expo=180s elev=13.9deg humid= 26% sunelev=-25.0deg (moon at  36.0deg phase=0.75 elev=+50.0 )
AL_20091128_182400340_252167_59718900     0 star  filter I [68107.2s - 68287.2s] expo=180s elev=14.4deg humid= 26% sunelev=-25.6deg (moon at  36.0deg phase=0.75 elev=+50.0 )
AL_20091128_192333799_252168_59719000     4 stars filter V [71681.2s - 71861.2s] expo=180s elev=21.1deg humid= 52% sunelev=-36.4deg (moon at  36.0deg phase=0.75 elev=+57.0 )
AL_20091128_192649706_252168_59719000     4 stars filter R [71877.2s - 72057.2s] expo=180s elev=21.4deg humid= 53% sunelev=-37.0deg (moon at  36.0deg phase=0.75 elev=+57.0 )
AL_20091128_193005603_252168_59719000     4 stars filter I [72073.2s - 72253.2s] expo=180s elev=21.7deg humid= 55% sunelev=-37.5deg (moon at  36.0deg phase=0.75 elev=+57.0 )
AL_20091128_203628765_252169_59719100     1 star  filter V [76056.2s - 76236.2s] expo=180s elev=26.2deg humid= 68% sunelev=-49.2deg (moon at  36.0deg phase=0.75 elev=+58.0 )
AL_20091128_203944656_252169_59719100     1 star  filter R [76252.2s - 76432.2s] expo=180s elev=26.4deg humid= 68% sunelev=-49.8deg (moon at  36.0deg phase=0.75 elev=+58.0 )
AL_20091128_204303493_252169_59719100     2 stars filter I [76451.2s - 76631.2s] expo=180s elev=26.5deg humid= 70% sunelev=-50.3deg (moon at  36.0deg phase=0.75 elev=+58.0 )
AL_20091130_190203773_252209_59723100     4 stars filter V [243191.2s - 243371.2s] expo=180s elev=19.7deg humid= 85% sunelev=-32.6deg (moon at  41.0deg phase=0.89 elev=+47.0 )
AL_20091130_190522617_252209_59723100     4 stars filter R [243390.2s - 243570.2s] expo=180s elev=20.1deg humid= 86% sunelev=-33.2deg (moon at  41.0deg phase=0.89 elev=+48.0 )
AL_20091130_190842601_252209_59723100     4 stars filter I [243590.2s - 243770.2s] expo=180s elev=20.4deg humid= 85% sunelev=-33.8deg (moon at  41.0deg phase=0.89 elev=+49.0 )
AL_20091130_222504197_252212_59723400     0 star  filter V [255372.2s - 255552.2s] expo=180s elev=25.7deg humid= 73% sunelev=-65.0deg (moon at  41.0deg phase=0.89 elev=+67.0 )
AL_20091130_223142341_252212_59723400     0 star  filter I [255770.2s - 255950.2s] expo=180s elev=25.3deg humid= 73% sunelev=-65.6deg (moon at  41.0deg phase=0.90 elev=+67.0 )
AL_20091130_234346610_252213_59723500     0 star  filter V [260094.2s - 260274.2s] expo=180s elev=19.4deg humid= 69% sunelev=-67.6deg (moon at  42.0deg phase=0.90 elev=+59.0 )
AL_20091130_234702516_252213_59723500     0 star  filter R [260290.2s - 260470.2s] expo=180s elev=19.0deg humid= 69% sunelev=-67.4deg (moon at  42.0deg phase=0.90 elev=+59.0 )
AL_20091130_235021766_252213_59723500     0 star  filter I [260489.2s - 260669.2s] expo=180s elev=18.6deg humid= 69% sunelev=-67.3deg (moon at  42.0deg phase=0.90 elev=+58.0 )
AL_20091201_015338556_252215_59723700     0 star  filter V [267886.2s - 268066.2s] expo=180s elev= 1.9deg humid= 63% sunelev=-51.9deg (moon at  42.0deg phase=0.90 elev=+38.0 )
AL_20091201_015657400_252215_59723700     0 star  filter R [268085.2s - 268265.2s] expo=180s elev= 1.5deg humid= 62% sunelev=-51.3deg (moon at  42.0deg phase=0.90 elev=+38.0 )
AL_20091201_020016931_252215_59723700     0 star  filter I [268284.2s - 268464.2s] expo=180s elev= 1.0deg humid= 62% sunelev=-50.8deg (moon at  42.0deg phase=0.90 elev=+37.0 )
AL_20091201_171316578_252228_59725000     2 stars filter V [323064.2s - 323244.2s] expo=180s elev= 6.2deg humid= 75% sunelev=-13.3deg (moon at  48.0deg phase=0.96 elev=+20.0 )
AL_20091201_171632672_252228_59725000     1 star  filter R [323260.2s - 323440.2s] expo=180s elev= 6.7deg humid= 75% sunelev=-13.8deg (moon at  48.0deg phase=0.96 elev=+21.0 )
AL_20091201_171948797_252228_59725000     2 stars filter I [323456.2s - 323636.2s] expo=180s elev= 7.2deg humid= 74% sunelev=-14.4deg (moon at  48.0deg phase=0.96 elev=+21.0 )
AL_20091201_180802128_252229_59725100     4 stars filter V [326349.2s - 326529.2s] expo=180s elev=13.8deg humid= 67% sunelev=-22.9deg (moon at  48.0deg phase=0.96 elev=+30.0 )
AL_20091201_181121237_252229_59725100     4 stars filter R [326548.2s - 326728.2s] expo=180s elev=14.3deg humid= 67% sunelev=-23.5deg (moon at  48.0deg phase=0.96 elev=+30.0 )
AL_20091201_181440294_252229_59725100     4 stars filter I [326748.2s - 326928.2s] expo=180s elev=14.7deg humid= 66% sunelev=-24.1deg (moon at  48.0deg phase=0.96 elev=+31.0 )
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=197.388576 lat=-66.748801
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Bibliography (Last GCNC circulars and status of satellites)

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Example of a GCNC email for this burst
GRB 091127: 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 091127 detected by SWIFT
(trigger 377179) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 950.2s after the GRB trigger
(XXXs after the notice). The elevation of the field decreased from
20 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2009-11-27T23:25:45.800

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+950.2s to t0+1130.2s : R > 15.1

The second image is 180.0s exposure in tracking mode:
t0+1146.2s to t0+1326.2s : R > 16.2

We co-added a series of exposures:
t0+1146.2s to t0+2853.2s : 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 950.2s 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=197.3886 lat=-66.7488

This message may be cited.