Learn More
We report the operation and control system of the Array for Microwave Background Anisotropy (AMIBA), a radio astronomical telescope which has been completed and operating smoothly on the summit of Mauna Loa, Hawaii since 2005. The telescope mount with six meters diameter is the largest steward platform ever employed for astronomical purposes.
This paper describes the development of a photonic local oscillator (LO) source based on a three-stage Mach-Zehnder modulator (MZM) device. The MZM laser synthesizer demonstrates the feasibility of providing the photonic reference LO for the Atacama Large Millimeter Array telescope located in Chile. This MZM approach to generating an LO by RF modulation of(More)
We present observations, analysis and results for the first-year operation of AMiBA, an interferomet-ric experiment designed to study cosmology via the measurement of Cosmic Microwave Background (CMB). AMiBA is the first CMB interferometer operating at 3 mm to have reported successful results , currently with seven close-packed antennas of 60-cm diameter(More)
The Yuan-Tseh Lee Array for Microwave Background Anisotropy (AMiBA) is the first interferometer dedicated to studying the cosmic microwave background (CMB) radiation at 3mm wavelength. The choice of 3 mm was made to minimize the contributions from foreground synchrotron radiation and Galactic dust emission. The initial configuration of seven 0.6 m(More)
A wideband analog correlator has been constructed for the Yuan-Tseh Lee Array for Microwave Background Anisotropy. Lag correlators using analog mul-tipliers provide large bandwidth and moderate frequency resolution. Broadband IF distribution, backend signal processing and control are described. Operating conditions for optimum sensitivity and linearity are(More)
  • 1