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Fengchun Shu
Type of contribution: oral

On the role of Tianma radio telescope for improving celestial reference frames

Fengchun Shu, Shanghai Astronomical Observatory Jinqing Wang, Shanghai Astronomical Observatory Wu Jiang, Shanghai Astronomical Observatory Guangli Wang, Shanghai Astronomical Observatory Zhiqiang Shen, Shanghai Astronomical Observatory

The Tianma 65-m radio telescope, located in Shanghai and approximately 6 km west of the station Seshan25, has been operated by Shanghai Astronomical Observatory since its inauguration in 2012. Tianma65 can be used as a single-dish or a powerful VLBI element for a variety of research on radio astronomy, geodesy as well as space science. Equipped with S/X dual band receiver and CDAS (Chinese VLBI Data Acquisition System), Tianma65 has been operational in CVN (Chinese VLBI Network) and then IVS sessions since 2013. It will be also equipped with X/Ka dual band receiver by the end of 2015. By taking advantage of its high sensitivity, Tianma65 is able to improve detection of astrometric sources and increase the total number of observations in one session, which is of importance for connection of radio-optical frames and densification of the ICRF. We will briefly describe the characteristics of this new antenna, introduce its performance on antenna measurements and fringe tests, present current observational status and discuss the future observations optimized for improving celestial reference frames.