TITLE: GCN CIRCULAR NUMBER: 7554 SUBJECT: GRB 080330: REM optical observations DATE: 08/03/31 08:35:23 GMT FROM: Paolo D'Avanzo at INAF-OAB P. D'Avanzo, S. Covino, D. Fugazza, L.A. Antonelli, 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, N. Masetti, A. Melandri, E. 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: The robotic 60-cm REM telescope located at La Silla (Chile) observed automatically the field of the GRB 080330 (Mao et al., GCN 7537) on March 30 03:42:11 UT (about 55 seconds after the burst). We clearly detect the afterglow reported in GCNs 7536 (Klotz et al.), 7537 (Mao et al.) 7538 (Schaefer & Guver), 7539 (Gomboc et al.), 7542 (Bloom & Starr), 7544 (Malesani et al.), 7545 (Clemens et al.), 7546 (Lee et al.), 7550 (Wang et al.). The R-band light curve between 70s < t-t0 < 1800s clearly shows an initial rising with a maximum around 330s < t-t0 < 450s and a subsequent plateau with a possible rebrightening at 900s < t-t0 < 1100s, as noted in GCNs 7538 (Schaefer & Guver), 7543 (Klotz et al.) and 7552 (Kuin & Mao). Further analysis is in progress.