Abstract
The Microwave Anisotropy Probe (MAP) satellite, launched 2001 June 30, will produce full sky maps of the cosmic microwave background radiation in five frequency bands spanning 20-106 GHz. MAP contains 20 differential radiometers built with High Electron Mobility Transistor (HEMT) amplifiers with passively cooled input stages. The design and test techniques used to evaluate and minimize systematic errors and the prelaunch performance of the radiometers for all five bands are presented.
Original language | English (US) |
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Pages (from-to) | 413-436 |
Number of pages | 24 |
Journal | Astrophysical Journal, Supplement Series |
Volume | 145 |
Issue number | 2 |
DOIs | |
State | Published - Apr 2003 |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science
Keywords
- Cosmic microwave background
- Instrumentation: detectors
- Space vehicles: instruments