天文学进展2016，Vol.34Issue(2)：212-220,9.DOI:10.3969/j.issn.1000-8349.2016.02.05
天马望远镜谱线OTF 观测系统
Spectral Line On-The-Fly Observing System of the Tian Ma Telescope
摘要
Abstract
The On-The-Fly (OTF) observing mode is the most efficient spectral line imag-ing technique, which is widely used to perform mapping observations with the single-dish telescopes. The implementation of the OTF mode in the Tian Ma telescope is described in this paper. The specific contents are as follows. Firstly, the OTF observing process and parameters are introduced. Secondly, the system architecture of the OTF observing system, the control software, the DIBAS (Digital Backend System) spectral line backend, the Intermediate Frequency transmission system, and the data pre-reduction algorithm are described. Finally, the six hydrogen recombination lines of the W3 region are presented. At present, the OTF observing system has completed several opening observations, and these observations have obtained good results which verify the OTF system.关键词
射电望远镜/分子谱线/OTF观测模式/观测系统Key words
radio telescope/molecular spectral line/OTF observing mode/observing system分类
天文与地球科学引用本文复制引用
董健,吴亚军,袁瑾,李尚活,李娟,王均智,陈曦,刘庆会,沈志强..天马望远镜谱线OTF 观测系统[J].天文学进展,2016,34(2):212-220,9.基金项目
国家自然科学基金(11503070，11590781)；天文专项-高精度测量与控制(Y587141002)；中国科学院上海天文台青年创新基金(Y597061009) （11503070，11590781）
