{
  "bibcode": "2022GCN.32939....1C",
  "body": "Content:\nM. Coughlin (UMN), E. Gurbanov (ShAO), F. Navarete (SOAR/NOIRLab),\nN. Kochiashvili (AbAO), M. Masek (FZU), Y. Rajabov (UBAI),\nT. Sadibekova (AIM-CEA), M. Freeberg (KNC), A. Klotz (OMP/IRAP),\nM. Boer, A. de Ugarte Postigo, S. Antier (OCA/Artemis), D. Turpin (CEA),\nR.W. Kiendrebeogo (OCA/Artemis, LPCE/UJKZ), I. Tosta e Melo (INFN-LNS),\nM. Lamoureux, K. Kruiswijk (UCLouvain), J.-G. Ducoin (IAP),\nC. Rinner, Z. Benkhaldoun (OUCA), J. Ali, A. Kaouech (OUCA/KNC),\nA. M. Fouad, A. Takey, A. Hamed, M. Abdel-Sabour, A. Shokry,\nM. Soliman (NRIAG),  X. F. Wang (THU/BJP), J. Zhu (BJP), X. Y. Zeng \n(CGTU),\nL. T. Wang, A. Iskandar (XAO), K. Smith (UVI), P. Gokuldass (Florida \nTech)\nN. Orange (OrangeWave Innovative Science, LLC), T. Hussenot (IJCLab),\nA. M. Fouad (NRIAG), A. Takey(NRIAG), H. A. Ismail, M. Abdel-Sabour \n(NRIAG),\nD. A. Kann (Goethe Univ.) report on behalf of the GRANDMA collaboration:\n\nThe GRANDMA telescope network responded to the Swift-BAT alert of\nGRB 221110A (M. A. Williams et al., GCN 32925, P.A. Evans et al. GCN \n32929)\ndetected at 02:28:17.62 UT. An afterglow was immediately detected by \nUVOT with\nthe estimated magnitude of 18.62 with a 1-sigma error of ~0.07 at XRT\n(not refined) position RA, Dec: 29.09928, -27.29435. The VLT/X-shooter\nspectroscopic observations (L. Izzo et al., GCN 32928) reported a high-z\ncandidate at z=4.06.\n\nThe first GRANDMA observations started 40 s after the BAT trigger time\nwith TCH telescope at La Silla, Chile.\n\nBelow, we report selected observations. We also report our 5-sigma upper\nlimits. Magnitudes are given in the AB system.\n\nT-T0(hr)|    MJD     | Obser.  | Exposure | Filter | Mag +/- err|Upp.Lim\n_______________________________________________________________________________\n  0.06   |59893.105660| TCH     | 5x30s    |  clear | 15.9+/-0.1 | 17.2\n  3.3    |59893.242788| SOAR    | 1x300s   |  sdssr | 21.7+/-0.2 | -\n  3.3    |59893.246601| SOAR    | 1x300s   |  sdssi | 19.8+/-0.1 | -\n  3.3    |59893.238496| SOAR    | 1x300s   |  sdssz | 19.4+/-0.2 | -\n  8.1    |59893.440510| KNC-SSO | 5x300s   |   Ic   |       -    | 19.0\n  17.6   |59893.835694| KAO     | 10x250s  | sdssz  |       -    | 19.9\n  18.7   |59893.881065| KNC-HAO | 20x180s  |    R   |       -    | 19.8\n  19.3   |59893.905405| MOSS    | 60x60s   |  clear |       -    | 20.4\n  25.1   |59894.149306| VIRT    | 400x10s  |    R   |       -    | 20.1\n\nThese observations are consistent with previous reports by LCOGT\n(R. Strausbaugh et al GCN 32926) and COATLI (M. Pereyra et al. GCN \n32927).\n\nTCH and MOSS data have been calibrated using nearby\nstars from the Pan-STARRS catalogue in sdss-r measured with\nSTDpipe (Karpov 2022).\n\nKNC-HAO data have been calibrated with respect to\nfield stars from the Pan-STARRS and APASS catalogues, using the MUPHOTEN\npipeline (Duverne et al. 2022).\n\nThe upper limit derived for KAO data was defined with the faintest \ndetected\nstar in the field and the images were processed with IRAF.\n\nSOAR used the \"Goodman Spectroscopic Pipeline\" for imaging processing\nand IRAF for getting the astrometric solution. The photometric \ncalibration\nwas done by comparison with SkyMapper sources in the field in SDSS.\n\nThe images of iTelescope 32 (Siding Spring Observatory, Australia)\nhave been processed using the STDpipe and photometry was performed\nusing field stars from the PanSTARRS1-i catalogue as a reference.\n\nVIRT data was processed with the in-house pipeline which uses the\nUSNO.B1 catalogue.\n\nThe nearly full Moon contaminated the observations.\n\nGRANDMA is a worldwide telescope network (grandma.ijclab.in2p3.fr)\ndevoted to the observation of transients in the context of \nmulti-messenger\nastrophysics (Antier et al. 2020 MNRAS 497, 5518). Kilonova-Catcher \n(KNC) is\nthe citizen science program of GRANDMA \n(http://kilonovacatcher.in2p3.fr/).",
  "circularId": 32939,
  "createdOn": 1668520663000,
  "email": "tostaemelo@lns.infn.it",
  "subject": "GRB 221110A: GRANDMA observations",
  "submitter": "Iara Tosta e Melo at INFN  <tostaemelo@lns.infn.it>",
  "eventId": "GRB 221110A"
}