BEARS-SIS 25-BEam array receiver system for the NRO 45-m telesope

摘要

A large focal plane array receiver system for the NRO 45m telescope (SIS 25-BEam Array Receiver System, or BEARS) is described. This new array reciever use SIS junctions and has 25 elements. It can operature at the frequency range of 82-116 GHz. The development of this new system is almost complete. We describe about the whole system in detail, which includes the receiver, the IF systems, the new spectrometers and the remote control systems. We also describe about the performances and the uniformity o f the system and show the astronomical result.