The Planck Surveyor Mission

Details The Planck Surveyor Mission The Planck Surveyor Mission

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.4120l&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #41.20; Bulletin of the American Astronomical Society, Vol. 29, p.1273

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Planck Surveyor is an ESA medium-size mission currently scheduled for launch in 2005. It will measure anisotropies in the Cosmic Microwave Background by imaging the whole sky at nine frequencies from 30--857 GHz at an angular resolution of 10 arcmin at 100 GHz. The third-generation space CMB mission, following COBE and MAP, Planck will have two state-of-the-art, cryogenic instruments. The Low Frequency Instrument will use arrays of InP high-electron-mobility-transistor amplifiers at 30, 45, 70, and 100 GHz, cooled to 20 K by a hydrogen sorption cooler. The High Frequency Instrument will use arrays of bolometers at 100, 143, 217, 353, 545, and 857 GHz, cooled to 0.1 K by a (3) He(4) He dilution refrigerator. The wide frequency coverage, angular resolution, and sensitivity achieved by Planck will allow clean separation of the CMB from confusing foreground sources of radiation, and the determination of the power spectrum of CMB fluctuations limited only number of independent samples provided by the Universe on angular scales down to roughly 5 arcmin.

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