TITLE: GCN CIRCULAR NUMBER: 7310 SUBJECT: GRB 080212: REM refined analysis DATE: 08/02/13 18:12:44 GMT FROM: Paolo D'Avanzo at INAF-OAB P. D'Avanzo, L.A. Antonelli, S. Covino, D. Fugazza, L. Calzoletti, S. Campana, G. Chincarini, M.L. Conciatore, S. Cutini, V. D'Elia, F. D'Alessio, F. Fiore, P. Goldoni, D. Guetta, C. Guidorzi, G.L. Israel, E. Maiorano, D. Malesani, N. Masetti, A. Melandri, E.J.A. Meurs, L. Nicastro, E. Palazzi, E. Pian, S. Piranomonte, L. Stella, G. Stratta, G. Tagliaferri, G. Tosti, V. Testa, S.D. Vergani, F. Vitali report on behalf of the REM team: We performed a more careful analysis of the REM H-band images of GRB 080212 (Ziaeepour et al. GCN 7296). We confirm the afterglow detection reported in D'Avanzo et al. (GCN 7302).The observations have been carried out on Feb 13.2063 UT (about 11.4 hours after the burst) and consist of three sets of images (lasting 10, 30 and 60 s respectively). We confirm the presence of a H = 15.3 ± 0.2 object (calibrated against the 2MASS catalogue) about 2.5" East of the K-type star (Berger, GCNs 7294 & 7304). The object is visible in both the 30 s and 60 s images at the following coordinates (J2000): R.A. = 15:24:35.42 Dec. = -22:44:28.8 with an uncertainty of 0.3" (the REM pixel size is 1.2"/pixel) . When compared to the GROND optical detection (obtained about 1.7 hours later, Kuepcue Yoldas et al. GCN 7303), our H-band measurement implies a colour I-H ~ 7 mag, which is very red. A possible way out is to invoke remarkable flaring activity around the time of the REM observation. We note that the X-ray light curve (available at: http://www.swift.ac.uk/xrt_curves/00303105/) shows some evidence for rebrightening about 2 hr before the REM observation. A finding chart, showing the detection at different H-band images can be found at the following URL: http://www.brera.inaf.it/utenti/davanzo/public/grb/GRB080212/GRB080212_REMIR_FC.jpg