Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-06-08
Astropart.Phys.17:101-124,2002
Astronomy and Astrophysics
Astrophysics
44 pages, 24 figures Full resolution postscript at http://publi.archeops.org
Scientific paper
10.1016/S0927-6505(01)00141-4
Archeops is a balloon-borne instrument dedicated to measuring cosmic microwave background (CMB) temperature anisotropies at high angular resolution (8 arcminutes) over a large fraction (25%) of the sky in the millimetre domain. Based on Planck High Frequency Instrument (HFI) technology, cooled bolometers (0.1 K) scan the sky in total power mode with large circles at constant elevation. During the course of a 24-hour Arctic-night balloon flight, Archeops will observe a complete annulus on the sky in four frequency bands centered at 143, 217, 353 and 545 GHz with an expected sensitivity to CMB fluctuations of \~100muK for each of the 90 thousand 20 arcminute average pixels. We describe the instrument and its performance obtained during a test flight from Trapani (Sicily) to Spain in July 1999.
Ade Peter
Amblard Alex
Ansari Rafat R.
Aubourg Eric
Bartlett James
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