{
  "bibcode": "2015GCN.18332....1K",
  "body": "A. Klotz (IRAP, CNRS/UPS) and M. Boer (ARTEMIS, CNRS/OCA/UNS) report, on\nbehalf of the TZAC collaboration:\n\nWe have imaged part of the error box of the candidate event GW 150914 == ALIGO\ntrigger 184098 with the TAROT robotic telescope located at La Silla\nObservatory (ESO). Observations started during the second part of the night\nbecause of localization constrains and adverse conditions at the beginning of\nthe night. TAROT Calern (OCA) could not be used because of bad weather.\n\nTAROT has a field of view of 1.9�� x 1.9��, and a typical limiting magnitude\nwith the C (clear) position of R < 18 for 120s exposure time.\n\n54 images were acquired within the 20% probability contour. 5 fields were\nchosen to maximise the number of galaxies surveyed.\n\nThe log of the observations is given below.\nNo obvious candidate is apparent on the images, beside some mis-catalogued stars.\nFurther analysis of the image is in progress and will be reported later.\n\nDate-Obs             exp  f   ra      dec   (radec corner1)   (radec corner2)   (radec corner3)   (radec corner4)\n2015-09-17T04:59:59  120  C  90.151 -69.613 ( 92.946 -70.516) ( 87.373 -70.523) ( 92.694 -68.662) ( 87.586 -68.669)\n2015-09-17T05:02:09  120  C  90.149 -69.614 ( 92.944 -70.516) ( 87.371 -70.524) ( 92.692 -68.662) ( 87.584 -68.669)\n2015-09-17T05:04:20  120  B  90.162 -69.616 ( 92.960 -70.519) ( 87.380 -70.527) ( 92.707 -68.663) ( 87.593 -68.671)\n2015-09-17T05:10:00  120  C 103.487 -70.333 (106.387 -71.234) (100.607 -71.243) (106.113 -69.380) (100.834 -69.389)\n2015-09-17T05:19:59  120  C 109.489 -69.719 (112.300 -70.621) (106.696 -70.630) (112.044 -68.766) (106.911 -68.775)\n2015-09-17T05:22:09  120  C 109.487 -69.720 (112.298 -70.622) (106.695 -70.631) (112.042 -68.767) (106.909 -68.776)\n2015-09-17T05:24:19  120  B 109.500 -69.722 (112.315 -70.624) (106.705 -70.634) (112.057 -68.768) (106.918 -68.778)\n2015-09-17T05:34:24  120  B  90.145 -69.618 ( 92.943 -70.522) ( 87.363 -70.529) ( 92.691 -68.666) ( 87.578 -68.672)\n2015-09-17T05:42:10  120  C 103.462 -70.318 (106.358 -71.219) (100.584 -71.227) (106.087 -69.365) (100.813 -69.373)\n2015-09-17T05:44:20  120  B 103.473 -70.320 (106.374 -71.222) (100.592 -71.231) (106.101 -69.366) (100.820 -69.374)\n2015-09-17T05:50:00  120  C 109.478 -69.718 (112.288 -70.620) (106.686 -70.629) (112.033 -68.766) (106.901 -68.774)\n2015-09-17T05:52:10  120  C 109.477 -69.719 (112.287 -70.621) (106.684 -70.629) (112.032 -68.767) (106.899 -68.775)\n2015-09-17T05:54:20  120  B 109.489 -69.721 (112.302 -70.624) (106.693 -70.633) (112.046 -68.768) (106.908 -68.776)\n2015-09-17T06:00:00  120  C 103.443 -70.331 (106.340 -71.232) (100.562 -71.240) (106.070 -69.379) (100.792 -69.386)\n2015-09-17T06:02:11  120  C 103.440 -70.331 (106.338 -71.233) (100.559 -71.241) (106.067 -69.379) (100.790 -69.386)\n2015-09-17T06:09:59  120  C 109.461 -69.732 (112.272 -70.634) (106.666 -70.642) (112.018 -68.780) (106.882 -68.787)\n2015-09-17T06:12:10  120  C 109.458 -69.733 (112.269 -70.635) (106.663 -70.643) (112.015 -68.781) (106.879 -68.788)\n2015-09-17T06:14:20  120  B 109.469 -69.735 (112.284 -70.638) (106.672 -70.646) (112.028 -68.782) (106.888 -68.789)\n2015-09-17T06:20:00  120  C 114.974 -69.632 (117.771 -70.534) (112.193 -70.542) (117.519 -68.680) (112.407 -68.687)\n2015-09-17T06:22:11  120  C 114.971 -69.632 (117.768 -70.535) (112.190 -70.543) (117.516 -68.681) (112.404 -68.688)\n2015-09-17T06:24:21  120  B 114.982 -69.635 (117.782 -70.538) (112.197 -70.546) (117.529 -68.682) (112.411 -68.689)\n2015-09-17T06:29:59  120  C 103.427 -70.328 (106.323 -71.230) (100.547 -71.237) (106.054 -69.376) (100.778 -69.382)\n2015-09-17T06:32:09  120  C 103.424 -70.329 (106.321 -71.231) (100.544 -71.237) (106.052 -69.377) (100.776 -69.383)\n2015-09-17T06:34:20  120  B 103.437 -70.330 (106.337 -71.233) (100.554 -71.240) (106.067 -69.378) (100.785 -69.384)\n2015-09-17T06:40:00  120  C 109.434 -69.730 (112.244 -70.633) (106.639 -70.639) (111.991 -68.779) (106.857 -68.785)\n2015-09-17T06:42:10  120  C 109.431 -69.730 (112.241 -70.633) (106.636 -70.640) (111.989 -68.779) (106.855 -68.785)\n2015-09-17T06:44:20  120  B 109.443 -69.732 (112.256 -70.636) (106.646 -70.643) (112.003 -68.780) (106.863 -68.787)\n2015-09-17T06:49:59  120  C 114.941 -69.629 (117.736 -70.532) (112.160 -70.539) (117.486 -68.678) (112.375 -68.684)\n2015-09-17T06:52:09  120  C 114.939 -69.630 (117.734 -70.533) (112.157 -70.539) (117.484 -68.679) (112.373 -68.685)\n2015-09-17T06:54:20  120  B 114.950 -69.632 (117.750 -70.535) (112.166 -70.543) (117.499 -68.679) (112.382 -68.686)\n2015-09-17T07:09:59  120  C 109.422 -69.726 (112.230 -70.629) (106.627 -70.635) (111.979 -68.775) (106.847 -68.781)\n2015-09-17T07:12:09  120  C 109.419 -69.727 (112.227 -70.630) (106.624 -70.636) (111.977 -68.776) (106.844 -68.781)\n2015-09-17T07:14:19  120  B 109.431 -69.729 (112.242 -70.633) (106.633 -70.639) (111.990 -68.777) (106.852 -68.783)\n2015-09-17T07:20:00  120  C 114.931 -69.617 (117.724 -70.520) (112.151 -70.526) (117.476 -68.666) (112.368 -68.672)\n2015-09-17T07:22:10  120  C 114.930 -69.617 (117.722 -70.521) (112.150 -70.526) (117.475 -68.667) (112.367 -68.672)\n2015-09-17T07:24:20  120  B 114.942 -69.619 (117.738 -70.523) (112.159 -70.530) (117.489 -68.667) (112.376 -68.673)\n2015-09-17T07:30:00  120  C 103.394 -70.308 (106.284 -71.211) (100.515 -71.216) (106.020 -69.357) (100.750 -69.362)\n2015-09-17T07:32:10  120  C 103.392 -70.308 (106.283 -71.211) (100.514 -71.216) (106.019 -69.357) (100.749 -69.362)\n2015-09-17T07:34:21  120  B 103.405 -70.310 (106.300 -71.214) (100.524 -71.219) (106.034 -69.358) (100.758 -69.363)\n2015-09-17T07:50:00  120  C 114.908 -69.612 (117.699 -70.516) (112.128 -70.520) (117.453 -68.662) (112.347 -68.666)\n2015-09-17T07:52:10  120  C 114.906 -69.612 (117.697 -70.516) (112.127 -70.521) (117.451 -68.662) (112.345 -68.666)\n2015-09-17T07:54:20  120  B 114.919 -69.614 (117.714 -70.518) (112.136 -70.524) (117.466 -68.662) (112.355 -68.667)\n2015-09-17T07:59:59  120  C 109.397 -69.717 (112.202 -70.621) (106.602 -70.625) (111.954 -68.767) (106.824 -68.771)\n2015-09-17T08:02:09  120  C 109.394 -69.717 (112.199 -70.621) (106.600 -70.625) (111.952 -68.767) (106.822 -68.771)\n2015-09-17T08:04:20  120  B 109.407 -69.718 (112.215 -70.623) (106.610 -70.628) (111.966 -68.767) (106.831 -68.772)\n2015-09-17T08:10:00  120  C 114.901 -69.609 (117.691 -70.513) (112.121 -70.518) (117.446 -68.659) (112.341 -68.663)\n2015-09-17T08:12:11  120  C 114.900 -69.609 (117.690 -70.513) (112.120 -70.518) (117.445 -68.659) (112.340 -68.663)\n2015-09-17T08:14:21  120  B 114.912 -69.611 (117.706 -70.516) (112.129 -70.521) (117.459 -68.660) (112.349 -68.664)\n2015-09-17T08:19:59  120  C 124.921 -68.013 (127.508 -68.919) (122.342 -68.923) (127.298 -67.064) (122.531 -67.068)\n2015-09-17T08:22:09  120  C 124.920 -68.013 (127.507 -68.919) (122.341 -68.923) (127.297 -67.065) (122.529 -67.069)\n2015-09-17T08:24:19  120  B 124.931 -68.015 (127.522 -68.922) (122.350 -68.926) (127.310 -67.065) (122.537 -67.069)\n2015-09-17T08:30:00  120  C 109.383 -69.713 (112.186 -70.617) (106.589 -70.621) (111.940 -68.763) (106.812 -68.767)\n2015-09-17T08:32:11  120  C 109.382 -69.713 (112.185 -70.618) (106.588 -70.622) (111.939 -68.764) (106.811 -68.767)\n2015-09-17T08:34:21  120  B 109.394 -69.715 (112.201 -70.620) (106.597 -70.624) (111.954 -68.764) (106.820 -68.768)\n\n[GCN OPS NOTE(19sep15): This Circular was originally published on 09:20 17-Sep-2015 UT.]",
  "circularId": 18332,
  "createdOn": 1442711686000,
  "email": "michel.boer@unice.fr",
  "subject": "LIGO/Virgo G184098: TAROT La Silla Observatory optical observations (TZAC)",
  "submitter": "Michel Boer at CESR-CNRS  <michel.boer@unice.fr>",
  "eventId": "LIGO/Virgo G184098"
}