TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1032 SUBJECT: GRB Observation Report DATE: 01/04/02 12:26:42 GMT FROM: Paolo Saracco at Obs.Astro. di Brera VLT-FORS1 observations of the host galaxy of GRB 981226 P. Saracco, G. Chincarini, S. Covino, G. Ghisellini, M. Longhetti, F. Zerbi (Osservatorio Astronomico di Brera, Merate, Italy) D. Lazzati (Institute of Astronomy,Cambridge, UK) P. Severgnini (Osservatorio Astronomico di Arcetri, Firenze, Italy) We have obtained 9720-second exposure (18 dithered images, 540 s each) in the Rc (Bessell) at the position of GRB 981226. Data have been carried out from 4th to 5th October 2000 at the ESO-VLT UT1 telescope with FORS1 under seeing conditions of ~0.7 arcsec. These observations are part of a survey of host galaxies (Saracco et al. 2000; Prog. ID: 66.B-0539(A)). We reach a limiting magnitude fainter than Rc=27.5 in the final co-added image (S/N=3 within the seeing disk). We clearly detect a galaxy at the position of GRB 981226 as previously found by Holland et al. (2000; GCN #749). We measure a magnitude (Vega) Rc=24.8(+-0.1) (galactic extinction A(R)=0.06) within an aperture radius of 2 arcsec. This message can be cited. -- Paolo Saracco Osservatorio Astronomico di Brera Via E. Bianchi 46, 23807 Merate (LC), Italy Tel. (+39) 039 9991151 www.merate.mi.astro.it/~saracco