The Deep Space Network (DSN) enables NASA to communicate with its spacecraft in deep space. By virtue of its large antennas, the DSN can also be used as a powerful instrument for radio astronomy. Specifically, the Deep Space Station (DSS)-43, the 70 m antenna at the Canberra Deep Space Communications Complex (CDSCC), has a K -band radio astronomy system covering a 10 GHz bandwidth at 17–27 GHz. This spectral range covers a number of atomic and molecular lines, produced in a rich variety of interstellar gas conditions. Lines include hydrogen radio recombination lines (RRLs), cyclopropenylidene (C 3 H 2 ), water masers (H 2 O), and ammonia (NH 3 ). A new high-resolution spectrometer was deployed at CDSCC in 2019 November and connected to the K -band down converter. The spectrometer has a total bandwidth of 16 GHz. Such a large total bandwidth enables, for example, the simultaneous observations of a large number of RRLs, which can be ...

中文翻译：

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用于深空网络的宽带数字光谱仪

借助深空网络（DSN），NASA可以与其太空飞船在深空进行通信。DSN凭借其较大的天线，还可以用作射电天文学的强大工具。具体来说，堪培拉深空通信系统（CDSCC）的70 m天线深空站（DSS）-43拥有一个K波段射电天文学系统，覆盖了17-27 GHz的10 GHz带宽。该光谱范围涵盖了在多种星际气体条件下产生的许多原子和分子线。管线包括氢无线电重组管线（RRL），环丙烯基（C 3 H 2），水基质（H 2 O）和氨气（NH 3）。2019年11月在CDSCC部署了一种新的高分辨率光谱仪，并将其连接到K波段下变频器。光谱仪的总带宽为16 GHz。