COMPASS: An Instrument for Measuring the Polarization of the CMB on Intermediate Angular Scales

Details COMPASS: An Instrument for Measuring the Polarization of the CMB on Intermediate Angular Scales COMPASS: An Instrument for Measuring the Polarization of the CMB on Intermediate Angular Scales

2003-05-30

arxiv.org/abs/astro-ph/0305608v2

Astronomy and Astrophysics

Astrophysics

To be published in the proceedings of "The Cosmic Microwave Background and its Polarization", New Astronomy Reviews, (eds. S.

Scientific paper

COMPASS is an on-axis 2.6 meter telescope coupled to a correlation polarimeter. The entire instrument was built specifically for CMB polarization studies. Careful attention was given to receiver and optics design, stability of the pointing platform, avoidance of systematic offsets, and development of data analysis techniques. Here we describe the experiment, its strengths and weaknesses, and the various things we have learned that may benefit future efforts to measure the polarization of the CMB.

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