The TopHat Experiment: A Balloon‐borne Instrument for Mapping Millimeter and Submillimeter Emission | Zendy

R. F. Silverberg | Zendy; E. S. Cheng | Zendy; James E. Aguirre | Zendy; J. J. Bezaire | Zendy; T. M. Crawford | Zendy; S. S. Meyer | Zendy; A. Bier | Zendy; Barbara Campano | Zendy; T. C. Chen | Zendy; D. A. Cottingham | Zendy; Elmer Sharp | Zendy; P. R. Christensen | Zendy; S. Cordone | Zendy; Peter T. Timbie | Zendy; Richard E. Dame | Zendy; D. J. Fixsen | Zendy; R. J. K. Kristensen | Zendy; H. U. Nørgaard-Nielsen | Zendy; G. W. Wilson | Zendy

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The TopHat Experiment: A Balloon‐borne Instrument for Mapping Millimeter and Submillimeter Emission

Author(s) -

R. F. Silverberg,

E. S. Cheng,

James E. Aguirre,

J. J. Bezaire,

T. M. Crawford,

S. S. Meyer,

A. Bier,

Barbara Campano,

T. C. Chen,

D. A. Cottingham,

Elmer Sharp,

P. R. Christensen,

S. Cordone,

Peter T. Timbie,

Richard E. Dame,

D. J. Fixsen,

R. J. K. Kristensen,

H. U. Nørgaard-Nielsen,

G. W. Wilson

Publication year - 2005

Publication title -

the astrophysical journal supplement series

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.546

H-Index - 277

eISSN - 1538-4365

pISSN - 0067-0049

DOI - 10.1086/432117

Subject(s) - cassegrain reflector , cosmic microwave background , physics , sky , telescope , millimeter , bolometer , dichroic glass , radiometer , remote sensing , astronomy , optics , astrophysics , detector , anisotropy , geology

The TopHat experiment was designed to measure the anisotropy in the cosmic microwave background radiation onangularscalesfrom0N3to30 andthethermalemissionfrombothGalacticandextragalacticdust.Theballoon-borne instrument had five spectral bands spanning frequencies from 175 to 630 GHz. The telescope was a compact, 1 m, on- axisCassegraintelescopedesignedtoscantheskyatafixedelevationof 78 .Theradiometerusedcryogenicbolometers coupled to a single feed horn via a dichroic filter system. The observing strategy was intended to efficiently cover a region 48 in diameter centered on the south polar cap with a highly cross-linked and redundant pattern with nearly uniform sky coverage. The Long Duration Balloon flight over Antarctica in 2001 January surveyed about 6% of the sky.Herewedescribethedesignoftheinstrumentandtheachievedin-flightperformanceandprovideabriefdiscussion of the data analysis. Subject headinggs: balloons — cosmic microwave background — cosmology: observations — galaxies: general

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