ELISA: A small balloon-borne experiment to guide future observations with FIRST

Astronomy and Astrophysics – Astronomy

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Galaxies: Formation, Stars: Formation, Missions: First, Elisa

Scientific paper

ELISA (Experiment for Large Infrared Survey Astronomy) is a project for a small balloon-borne experiment designed to measure the galactic submillimeter continuum emission from 170 to 650 microns. This paper briefly presents its scientific objectives and the main instrument characteristics. The major goal of the ELISA project is to provide a complete census of the galactic dust emission in this wavelength range at an angular resolution similar to the IRAS all-sky survey (typically 3.5'). Current plans envision 3 flights (including one from South hemisphere), leading to a large survey along the Galactic plane (b <= 20o) as well as deeper observations toward high latitude cirrus clouds, before FIRST launch in 2007. The ELISA survey will therefore be available and well suited as a guide to plan FIRST observations, similar to what IRAS was for ISO. In addition, by filling the angular resolution gap between the COBE and FIRST data set, the ELISA survey could enable routine cross calibration between the DIRBE and FIRST observations.

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