The ESA FIRST Cornerstone Mission

Astronomy and Astrophysics – Astronomy

Scientific paper

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First, Esa, Cornerstone, Far Infrared, Submillimetre, Space Observatory

Scientific paper

FIRST, the `Far InfraRed and Submillimetre Telescope', is the fourth cornerstone mission in the European Space Agency (ESA) science programme. It will perform imaging photometry and spectroscopy in the far-infrared and submillimetre part of the spectrum, covering approximately the 60-670 micron range. FIRST will carry a 3.5 metre diameter passively cooled telescope. The science payload complement -- two cameras/medium resolution spectrometers (PACS and SPIRE) and a very high resolution heterodyne spectrometer (HIFI) -- will be housed in a superfluid helium cryostat. FIRST will be placed in a transfer trajectory towards its operational orbit around the Earth-Sun L2 point by an Ariane 5 (shared with Planck) in early 2007. Once operational FIRST will offer a minimum of 3 years of routine observations; roughly 2/3 of the available observing time is open to the general astronomical community through a standard competitive proposal procedure.

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