GRB110918_100848_SWIFT at TAROT Calern observatory

TAROT Calern observatory log of images

AL_20110918_182953671_000002_18477201    44 stars filter C [30079.9s - 30139.9s] expo= 60s elev=43.6deg humid= 78% sunelev=-10.2deg (moon at 136.0deg phase=0.61 elev=-15.0 )
AL_20110918_183034186_000002_18477201    36 stars filter C [30150.4s - 30180.4s] expo= 30s elev=43.6deg humid= 78% sunelev=-10.4deg (moon at 136.0deg phase=0.61 elev=-15.0 )
AL_20110918_183114921_000002_18477201    45 stars filter C [30191.2s - 30221.2s] expo= 30s elev=43.6deg humid= 78% sunelev=-10.5deg (moon at 136.0deg phase=0.61 elev=-15.0 )
AL_20110918_183155906_000002_18477201    40 stars filter C [30232.1s - 30262.1s] expo= 30s elev=43.6deg humid= 77% sunelev=-10.6deg (moon at 136.0deg phase=0.61 elev=-15.0 )
AL_20110918_183236389_000002_18477201    43 stars filter C [30272.7s - 30302.7s] expo= 30s elev=43.6deg humid= 77% sunelev=-10.8deg (moon at 136.0deg phase=0.61 elev=-15.0 )
AL_20110918_183316437_000002_18477201    42 stars filter C [30312.7s - 30342.7s] expo= 30s elev=43.6deg humid= 77% sunelev=-10.9deg (moon at 136.0deg phase=0.61 elev=-15.0 )
AL_20110918_183820223_000002_18477301    63 stars filter C [30556.5s - 30646.5s] expo= 90s elev=43.6deg humid= 77% sunelev=-11.6deg (moon at 136.0deg phase=0.61 elev=-14.0 )
AL_20110918_184000973_000002_18477301    60 stars filter C [30657.2s - 30747.2s] expo= 90s elev=43.7deg humid= 77% sunelev=-11.9deg (moon at 136.0deg phase=0.61 elev=-14.0 )
AL_20110918_184141692_000002_18477301    40 stars filter R [30758.0s - 30848.0s] expo= 90s elev=43.6deg humid= 75% sunelev=-12.2deg (moon at 136.0deg phase=0.61 elev=-14.0 )
AL_20110918_184322208_000002_18477301    64 stars filter C [30858.5s - 30948.5s] expo= 90s elev=43.6deg humid= 75% sunelev=-12.5deg (moon at 136.0deg phase=0.61 elev=-14.0 )
AL_20110918_184502730_000002_18477301    45 stars filter C [30959.0s - 31049.0s] expo= 90s elev=43.6deg humid= 74% sunelev=-12.8deg (moon at 136.0deg phase=0.61 elev=-14.0 )
AL_20110918_184643683_000002_18477301    19 stars filter R [31059.9s - 31149.9s] expo= 90s elev=43.6deg humid= 75% sunelev=-13.1deg (moon at 136.0deg phase=0.61 elev=-14.0 )
AL_20110918_184922886_000002_18477401    38 stars filter C [31219.2s - 31309.2s] expo= 90s elev=43.6deg humid= 76% sunelev=-13.5deg (moon at 136.0deg phase=0.61 elev=-13.0 )
AL_20110918_185103619_000002_18477401    36 stars filter C [31319.9s - 31409.9s] expo= 90s elev=43.6deg humid= 77% sunelev=-13.8deg (moon at 136.0deg phase=0.61 elev=-13.0 )
AL_20110918_185244401_000002_18477401    10 stars filter R [31420.6s - 31510.6s] expo= 90s elev=43.6deg humid= 77% sunelev=-14.1deg (moon at 136.0deg phase=0.61 elev=-13.0 )
AL_20110918_185425128_000002_18477401    19 stars filter C [31521.4s - 31611.4s] expo= 90s elev=43.5deg humid= 76% sunelev=-14.4deg (moon at 136.0deg phase=0.61 elev=-13.0 )
AL_20110918_185605612_000002_18477401    64 stars filter C [31621.9s - 31711.9s] expo= 90s elev=43.5deg humid= 76% sunelev=-14.7deg (moon at 136.0deg phase=0.61 elev=-12.0 )
AL_20110918_185746580_000002_18477401    43 stars filter R [31722.8s - 31812.8s] expo= 90s elev=43.5deg humid= 76% sunelev=-15.0deg (moon at 136.0deg phase=0.61 elev=-12.0 )
AL_20110918_190545801_000002_18477501    71 stars filter C [32112.1s - 32292.1s] expo=180s elev=43.3deg humid= 75% sunelev=-16.1deg (moon at 136.0deg phase=0.61 elev=-11.0 )
AL_20110918_190856753_000002_18477501   105 stars filter C [32303.0s - 32483.0s] expo=180s elev=43.2deg humid= 74% sunelev=-16.6deg (moon at 136.0deg phase=0.61 elev=-11.0 )
AL_20110918_191207707_000002_18477501    82 stars filter R [32494.0s - 32674.0s] expo=180s elev=43.1deg humid= 75% sunelev=-17.2deg (moon at 136.0deg phase=0.61 elev=-11.0 )
AL_20110918_191518713_000002_18477501    81 stars filter C [32685.0s - 32865.0s] expo=180s elev=43.0deg humid= 75% sunelev=-17.7deg (moon at 136.0deg phase=0.61 elev=-10.0 )
AL_20110918_191829213_000002_18477501   103 stars filter C [32875.5s - 33055.5s] expo=180s elev=42.9deg humid= 75% sunelev=-18.2deg (moon at 136.0deg phase=0.61 elev=-10.0 )
AL_20110918_192139712_000002_18477501    66 stars filter R [33066.0s - 33246.0s] expo=180s elev=42.7deg humid= 74% sunelev=-18.8deg (moon at 136.0deg phase=0.61 elev= -9.0 )
AL_20110918_192556811_000002_18477601   100 stars filter C [33323.1s - 33503.1s] expo=180s elev=42.5deg humid= 73% sunelev=-19.5deg (moon at 136.0deg phase=0.61 elev= -9.0 )
AL_20110918_192907076_000002_18477601    76 stars filter C [33513.3s - 33693.3s] expo=180s elev=42.4deg humid= 72% sunelev=-20.0deg (moon at 136.0deg phase=0.61 elev= -8.0 )
AL_20110918_193217560_000002_18477601    76 stars filter R [33703.8s - 33883.8s] expo=180s elev=42.2deg humid= 70% sunelev=-20.5deg (moon at 136.0deg phase=0.61 elev= -8.0 )
AL_20110918_193527611_000002_18477601    96 stars filter C [33893.9s - 34073.9s] expo=180s elev=42.0deg humid= 70% sunelev=-21.1deg (moon at 136.0deg phase=0.61 elev= -8.0 )
AL_20110918_193838626_000002_18477601    72 stars filter C [34084.9s - 34264.9s] expo=180s elev=41.9deg humid= 69% sunelev=-21.6deg (moon at 136.0deg phase=0.61 elev= -7.0 )
AL_20110918_194148642_000002_18477601    76 stars filter R [34274.9s - 34454.9s] expo=180s elev=41.7deg humid= 70% sunelev=-22.1deg (moon at 136.0deg phase=0.61 elev= -7.0 )
AL_20110918_194559474_000002_18477701    61 stars filter C [34525.7s - 34705.7s] expo=180s elev=41.4deg humid= 69% sunelev=-22.8deg (moon at 136.0deg phase=0.61 elev= -6.0 )
AL_20110918_194909741_000002_18477701    72 stars filter C [34716.0s - 34896.0s] expo=180s elev=41.2deg humid= 69% sunelev=-23.3deg (moon at 137.0deg phase=0.61 elev= -6.0 )
AL_20110918_195220710_000002_18477701    31 stars filter R [34907.0s - 35087.0s] expo=180s elev=40.9deg humid= 67% sunelev=-23.8deg (moon at 137.0deg phase=0.61 elev= -5.0 )
AL_20110918_195530963_000002_18477701    50 stars filter C [35097.2s - 35277.2s] expo=180s elev=40.7deg humid= 68% sunelev=-24.3deg (moon at 137.0deg phase=0.61 elev= -5.0 )
AL_20110918_195841259_000002_18477701    70 stars filter C [35287.5s - 35467.5s] expo=180s elev=40.4deg humid= 68% sunelev=-24.8deg (moon at 137.0deg phase=0.61 elev= -4.0 )
AL_20110918_200152244_000002_18477701    35 stars filter R [35478.5s - 35658.5s] expo=180s elev=40.2deg humid= 66% sunelev=-25.3deg (moon at 137.0deg phase=0.61 elev= -4.0 )
AL_20110918_200552155_000002_18477801    23 stars filter C [35718.4s - 35898.4s] expo=180s elev=39.9deg humid= 65% sunelev=-25.9deg (moon at 137.0deg phase=0.61 elev= -3.0 )
AL_20110918_200902686_000002_18477801     7 stars filter C [35908.9s - 36088.9s] expo=180s elev=39.6deg humid= 64% sunelev=-26.4deg (moon at 137.0deg phase=0.61 elev= -3.0 )
AL_20110918_201213373_000002_18477801     3 stars filter R [36099.7s - 36279.7s] expo=180s elev=39.3deg humid= 63% sunelev=-26.9deg (moon at 137.0deg phase=0.61 elev= -2.0 )
AL_20110918_201524365_000002_18477801    22 stars filter C [36290.6s - 36470.6s] expo=180s elev=39.0deg humid= 63% sunelev=-27.4deg (moon at 137.0deg phase=0.61 elev= -2.0 )
AL_20110918_201835100_000002_18477801    26 stars filter C [36481.4s - 36661.4s] expo=180s elev=38.7deg humid= 63% sunelev=-27.9deg (moon at 137.0deg phase=0.61 elev= -2.0 )
AL_20110918_202146100_000002_18477801    66 stars filter R [36672.3s - 36852.3s] expo=180s elev=38.4deg humid= 63% sunelev=-28.4deg (moon at 137.0deg phase=0.61 elev= -1.0 )
AL_20110918_202554572_000002_18477901    73 stars filter C [36920.8s - 37100.8s] expo=180s elev=38.0deg humid= 62% sunelev=-29.0deg (moon at 137.0deg phase=0.61 elev= +0.0 )
AL_20110918_202904870_000002_18477901    80 stars filter C [37111.1s - 37291.1s] expo=180s elev=37.6deg humid= 61% sunelev=-29.4deg (moon at 137.0deg phase=0.61 elev= +0.0 )
AL_20110918_203215136_000002_18477901    76 stars filter R [37301.4s - 37481.4s] expo=180s elev=37.3deg humid= 61% sunelev=-29.9deg (moon at 137.0deg phase=0.60 elev= +0.0 )
AL_20110918_203525871_000002_18477901    92 stars filter C [37492.1s - 37672.1s] expo=180s elev=37.0deg humid= 61% sunelev=-30.4deg (moon at 137.0deg phase=0.60 elev= +0.0 )
AL_20110918_203835918_000002_18477901    95 stars filter C [37682.2s - 37862.2s] expo=180s elev=36.6deg humid= 59% sunelev=-30.8deg (moon at 137.0deg phase=0.60 elev= +0.0 )
AL_20110918_204145965_000002_18477901    58 stars filter R [37872.2s - 38052.2s] expo=180s elev=36.3deg humid= 59% sunelev=-31.2deg (moon at 137.0deg phase=0.60 elev= +1.0 )
AL_20110918_204556828_000002_18478001    89 stars filter C [38123.0s - 38303.0s] expo=180s elev=35.8deg humid= 59% sunelev=-31.8deg (moon at 137.0deg phase=0.60 elev= +2.0 )
AL_20110918_204907063_000002_18478001    84 stars filter C [38313.3s - 38493.3s] expo=180s elev=35.4deg humid= 56% sunelev=-32.3deg (moon at 137.0deg phase=0.60 elev= +2.0 )
AL_20110918_205218048_000002_18478001    73 stars filter R [38504.3s - 38684.3s] expo=180s elev=35.0deg humid= 56% sunelev=-32.7deg (moon at 137.0deg phase=0.60 elev= +3.0 )
AL_20110918_205529020_000002_18478001    84 stars filter C [38695.3s - 38875.3s] expo=180s elev=34.7deg humid= 55% sunelev=-33.1deg (moon at 137.0deg phase=0.60 elev= +3.0 )
AL_20110918_205839974_000002_18478001    75 stars filter C [38886.2s - 39066.2s] expo=180s elev=34.3deg humid= 56% sunelev=-33.5deg (moon at 137.0deg phase=0.60 elev= +4.0 )
AL_20110918_210150974_000002_18478001    76 stars filter R [39077.2s - 39257.2s] expo=180s elev=33.9deg humid= 56% sunelev=-34.0deg (moon at 137.0deg phase=0.60 elev= +4.0 )
AL_20110918_210558556_000002_18478101    67 stars filter C [39324.8s - 39504.8s] expo=180s elev=33.3deg humid= 56% sunelev=-34.5deg (moon at 137.0deg phase=0.60 elev= +5.0 )
AL_20110918_210909024_000002_18478101    90 stars filter C [39515.3s - 39695.3s] expo=180s elev=32.9deg humid= 55% sunelev=-34.9deg (moon at 137.0deg phase=0.60 elev= +5.0 )
AL_20110918_211219993_000002_18478101    69 stars filter R [39706.3s - 39886.3s] expo=180s elev=32.5deg humid= 54% sunelev=-35.3deg (moon at 137.0deg phase=0.60 elev= +6.0 )
AL_20110918_211530984_000002_18478101    81 stars filter C [39897.2s - 40077.2s] expo=180s elev=32.1deg humid= 54% sunelev=-35.7deg (moon at 137.0deg phase=0.60 elev= +6.0 )
AL_20110918_211841984_000002_18478101    91 stars filter C [40088.2s - 40268.2s] expo=180s elev=31.7deg humid= 54% sunelev=-36.1deg (moon at 137.0deg phase=0.60 elev= +7.0 )
AL_20110918_212151983_000002_18478101    49 stars filter R [40278.2s - 40458.2s] expo=180s elev=31.2deg humid= 54% sunelev=-36.4deg (moon at 137.0deg phase=0.60 elev= +7.0 )
AL_20110918_212600486_000002_18478201    78 stars filter C [40526.8s - 40706.8s] expo=180s elev=30.7deg humid= 53% sunelev=-36.9deg (moon at 137.0deg phase=0.60 elev= +8.0 )
AL_20110918_212910813_000002_18478201    64 stars filter C [40717.0s - 40897.0s] expo=180s elev=30.2deg humid= 53% sunelev=-37.3deg (moon at 137.0deg phase=0.60 elev= +8.0 )
AL_20110918_213221953_000002_18478201    64 stars filter R [40908.2s - 41088.2s] expo=180s elev=29.8deg humid= 53% sunelev=-37.6deg (moon at 137.0deg phase=0.60 elev= +9.0 )
AL_20110918_213532928_000002_18478201    84 stars filter C [41099.2s - 41279.2s] expo=180s elev=29.3deg humid= 53% sunelev=-38.0deg (moon at 137.0deg phase=0.60 elev= +9.0 )
AL_20110918_213843209_000002_18478201    72 stars filter C [41289.5s - 41469.5s] expo=180s elev=28.9deg humid= 52% sunelev=-38.3deg (moon at 137.0deg phase=0.60 elev=+10.0 )
AL_20110918_214153989_000002_18478201    58 stars filter R [41480.2s - 41660.2s] expo=180s elev=28.4deg humid= 52% sunelev=-38.6deg (moon at 137.0deg phase=0.60 elev=+11.0 )
AL_20110918_214602446_000002_18478301    56 stars filter C [41728.7s - 41908.7s] expo=180s elev=27.8deg humid= 52% sunelev=-39.1deg (moon at 137.0deg phase=0.60 elev=+11.0 )
AL_20110918_214912742_000002_18478301    62 stars filter C [41919.0s - 42099.0s] expo=180s elev=27.3deg humid= 51% sunelev=-39.4deg (moon at 137.0deg phase=0.60 elev=+12.0 )
AL_20110918_215223492_000002_18478301    41 stars filter R [42109.7s - 42289.7s] expo=180s elev=26.8deg humid= 51% sunelev=-39.7deg (moon at 138.0deg phase=0.60 elev=+12.0 )
AL_20110918_215533528_000002_18478301    63 stars filter C [42299.8s - 42479.8s] expo=180s elev=26.4deg humid= 52% sunelev=-40.0deg (moon at 138.0deg phase=0.60 elev=+13.0 )
AL_20110918_215844278_000002_18478301    56 stars filter C [42490.5s - 42670.5s] expo=180s elev=25.9deg humid= 52% sunelev=-40.3deg (moon at 138.0deg phase=0.60 elev=+13.0 )
AL_20110918_220154512_000002_18478301    38 stars filter R [42680.8s - 42860.8s] expo=180s elev=25.4deg humid= 52% sunelev=-40.6deg (moon at 138.0deg phase=0.60 elev=+14.0 )
AL_20110918_220604155_000002_18478401    59 stars filter C [42930.4s - 43110.4s] expo=180s elev=24.7deg humid= 52% sunelev=-40.9deg (moon at 138.0deg phase=0.60 elev=+15.0 )
AL_20110918_220915186_000002_18478401    52 stars filter C [43121.4s - 43301.4s] expo=180s elev=24.2deg humid= 52% sunelev=-41.2deg (moon at 138.0deg phase=0.60 elev=+15.0 )
AL_20110918_221226108_000002_18478401    48 stars filter R [43312.4s - 43492.4s] expo=180s elev=23.7deg humid= 51% sunelev=-41.4deg (moon at 138.0deg phase=0.60 elev=+16.0 )
AL_20110918_221536537_000002_18478401    64 stars filter C [43502.4s - 43682.4s] expo=180s elev=23.2deg humid= 53% sunelev=-41.7deg (moon at 138.0deg phase=0.60 elev=+16.0 )
AL_20110918_221847599_000002_18478401    56 stars filter C [43693.9s - 43873.9s] expo=180s elev=22.7deg humid= 53% sunelev=-41.9deg (moon at 138.0deg phase=0.60 elev=+17.0 )
AL_20110918_222158599_000002_18478401    44 stars filter R [43884.8s - 44064.8s] expo=180s elev=22.2deg humid= 53% sunelev=-42.1deg (moon at 138.0deg phase=0.60 elev=+17.0 )
AL_20110918_222605944_000002_18478501    50 stars filter C [44132.2s - 44312.2s] expo=180s elev=21.6deg humid= 53% sunelev=-42.4deg (moon at 138.0deg phase=0.60 elev=+18.0 )
AL_20110918_222916896_000002_18478501    62 stars filter C [44323.2s - 44503.2s] expo=180s elev=21.0deg humid= 52% sunelev=-42.6deg (moon at 138.0deg phase=0.60 elev=+19.0 )
AL_20110918_223226927_000002_18478501    38 stars filter R [44513.2s - 44693.2s] expo=180s elev=20.5deg humid= 53% sunelev=-42.8deg (moon at 138.0deg phase=0.60 elev=+19.0 )
AL_20110918_223536978_000002_18478501    51 stars filter C [44703.2s - 44883.2s] expo=180s elev=20.0deg humid= 53% sunelev=-43.0deg (moon at 138.0deg phase=0.60 elev=+20.0 )
AL_20110918_223847948_000002_18478501    56 stars filter C [44894.2s - 45074.2s] expo=180s elev=19.5deg humid= 51% sunelev=-43.2deg (moon at 138.0deg phase=0.60 elev=+20.0 )
AL_20110918_224158915_000002_18478501    28 stars filter R [45085.2s - 45265.2s] expo=180s elev=19.0deg humid= 51% sunelev=-43.3deg (moon at 138.0deg phase=0.60 elev=+21.0 )
AL_20110918_224608591_000002_18478601    58 stars filter C [45334.8s - 45514.8s] expo=180s elev=18.3deg humid= 52% sunelev=-43.5deg (moon at 138.0deg phase=0.60 elev=+21.0 )
AL_20110918_224918872_000002_18478601    44 stars filter C [45525.1s - 45705.1s] expo=180s elev=17.7deg humid= 51% sunelev=-43.7deg (moon at 138.0deg phase=0.60 elev=+22.0 )
AL_20110918_225229138_000002_18478601    34 stars filter R [45715.4s - 45895.4s] expo=180s elev=17.2deg humid= 51% sunelev=-43.8deg (moon at 138.0deg phase=0.60 elev=+23.0 )
AL_20110918_225540111_000002_18478601    45 stars filter C [45906.4s - 46086.4s] expo=180s elev=16.7deg humid= 50% sunelev=-43.9deg (moon at 138.0deg phase=0.60 elev=+23.0 )
AL_20110918_225851080_000002_18478601    45 stars filter C [46097.3s - 46277.3s] expo=180s elev=16.1deg humid= 50% sunelev=-44.0deg (moon at 138.0deg phase=0.60 elev=+24.0 )
AL_20110918_230202032_000002_18478601    34 stars filter R [46288.3s - 46468.3s] expo=180s elev=15.6deg humid= 50% sunelev=-44.1deg (moon at 138.0deg phase=0.60 elev=+24.0 )
AL_20110918_231211003_000002_18478701    39 stars filter C [46897.3s - 47077.3s] expo=180s elev=13.8deg humid= 50% sunelev=-44.3deg (moon at 138.0deg phase=0.60 elev=+26.0 )
AL_20110918_231521055_000002_18478701    29 stars filter R [47087.3s - 47267.3s] expo=180s elev=13.3deg humid= 51% sunelev=-44.4deg (moon at 138.0deg phase=0.60 elev=+27.0 )
AL_20110918_231831992_000002_18478701    11 stars filter V [47278.3s - 47458.3s] expo=180s elev=12.8deg humid= 51% sunelev=-44.4deg (moon at 138.0deg phase=0.60 elev=+27.0 )
AL_20110918_233705530_000002_18478801    24 stars filter C [48391.8s - 48571.8s] expo=180s elev= 9.5deg humid= 51% sunelev=-44.4deg (moon at 138.0deg phase=0.60 elev=+30.0 )
AL_20110918_234016263_000002_18478801    13 stars filter R [48582.5s - 48762.5s] expo=180s elev= 9.0deg humid= 51% sunelev=-44.4deg (moon at 138.0deg phase=0.60 elev=+31.0 )
AL_20110918_234326311_000002_18478801     4 stars filter V [48772.6s - 48952.6s] expo=180s elev= 8.4deg humid= 51% sunelev=-44.3deg (moon at 138.0deg phase=0.60 elev=+31.0 )
AL_20110919_000154814_000002_18478901    11 stars filter C [49881.1s - 50061.1s] expo=180s elev= 5.2deg humid= 51% sunelev=-43.8deg (moon at 138.0deg phase=0.60 elev=+35.0 )
AL_20110919_000504865_000002_18478901     1 star  filter R [50071.1s - 50251.1s] expo=180s elev= 4.6deg humid= 50% sunelev=-43.7deg (moon at 138.0deg phase=0.60 elev=+35.0 )
AL_20110919_000814879_000002_18478901     0 star  filter V [50261.1s - 50441.1s] expo=180s elev= 4.1deg humid= 51% sunelev=-43.6deg (moon at 138.0deg phase=0.60 elev=+36.0 )
AL_20110919_002645089_000002_18479001     0 star  filter C [51371.4s - 51551.4s] expo=180s elev= 1.0deg humid= 50% sunelev=-42.6deg (moon at 139.0deg phase=0.59 elev=+39.0 )
AL_20110919_002956277_000002_18479001     0 star  filter R [51562.6s - 51742.6s] expo=180s elev= 0.4deg humid= 49% sunelev=-42.4deg (moon at 139.0deg phase=0.59 elev=+40.0 )
AL_20110919_003306339_000002_18479001     0 star  filter V [51752.6s - 51932.6s] expo=180s elev=-0.0deg humid= 48% sunelev=-42.2deg (moon at 139.0deg phase=0.59 elev=+40.0 )
Informations from GCN notice:
This is not a GRB (a retractation has been edited)
Date of GRB : 2455822.9218590278 2011-09-18T10:07:28.620
Date of notice : 2455822.9227777780 2011-09-18T10:08:48.000
Refined position : yes (error radius=366.0 arcsec)
RA(J2000.0) : 283.877800 18h55m30s6
DEC(J2000.0) : -2.606700 -02d36m24s11
Error box : x=-29:194 y=-19:203 (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=31.059971 lat=-2.119855
NASA/IPAC-Extragalactic-Database tool for calculate an extinction

Extinction from Schlegel et al. (1998, ApJ 500, 525): E(B-V)=1.770
Assuming Rv=3.1: Av=5.869 Ar=4.732 Ai=3.434
extmap.fit: Extinction map E(B-V) from Schlegel:

Field of View is about 56 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 110918: 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 110918 detected by SWIFT
(trigger 503434) with the TAROT robotic telescope (D=25cm)
located at the Calern observatory, France.

The observations started 30079.9s after the GRB trigger
(30000.6s after the notice). The elevation of the field increased from
43 degrees above horizon and weather conditions
were XXX.

---- NO
The date of trigger : t0 = 2011-09-18T10:07:28.704

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+30079.9s to t0+30139.9s : R > 15.1

The second image is 30.0s exposure in tracking mode:
t0+30150.4s to t0+30180.4s : R > 16.2

We co-added a series of exposures:
t0+30150.4s to t0+30646.5s : 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 30079.9s 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= 31.0600 lat= -2.1199
and the galactic extinction in R band is 4.7 magnitudes
estimated from D. Schlegel et al. 1998ApJ...500..525S.

This message may be cited.
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