UFFO Burst Alert & Trigger Telescope (UBAT): a new instrument for GRBs detection

By using techniques developed on High Energy Gamma rays detection from the LEGRI Instrument on board Spanish MINISAT-01 satellite, and, the experience acquired with the INTEGRAL payloads, the scientific and technical team of IPL-INTA is involved in developing a new instrument which will detect early Gamma Ray Burst event: the goal of the Ultra Fast Flash Observatory (UFFO) telescope will be to locate GRBs and measure its UV/Optical photons in short time scales less than one minute even sub-second timescales. To prove that this technological challenge is to successfully achieved, UFFO collaboration has developed the UFFO Pathfinder space mission to be launched on board Lomonosov satellite in November 2011. It consists of two instruments: The UFFO Burst Alert & Trigger Telescope (UBAT) devoted to the location of the GRB, and the Slewing Mirror Telescope (SMT) for the UV/Optical afterglow observation, upon triggering by UBAT. University of Valencia and INTA team collaborates in the UBAT Imaging System, Mechanical Housing and Thermal Control Hardware, as weel as in the On Board and Trigerring software developing, design and manufacturing or programming. In this paper we will present UFFO UBAT Telescope design.