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东京天文台把声光射电分光计用于星际分子的光谱观测已获初步成功。而且野边山已建成45m射电望远镜用的大型系统,从去年起提供使用。该系统利用TeO_2光调制器、HeNe激光器、图象传感器、高速信息处理机等,可将接收电波的频谱总共分成24,000个信道的并行输出。该射电分光计能瞬时观测2GHz带宽,为以前星际分子观测所用滤波器组射电分光计性能的10倍,因而利用45m望远镜已取得许多成果。
Tokyo Observatory to the acousto-optic radio spectrometer for the spectral observation of interstellar molecules has been initially successful. And Nobeyama has built a large system for 45m radio telescopes, available from last year. The system uses a TeO 2 optical modulator, a HeNe laser, an image sensor, a high-speed processor, etc. to divide the spectrum of the received waves into a total of 24,000 channels of parallel output. The radio-spectrometer instantly observes the 2-GHz bandwidth, which is 10 times the performance of the previously used filter bank radio-spectrometer for interstellar molecular observations, and many results have been achieved with 45m telescopes.