At 65 meters in diameter, the radio telescope Tianma-or

 heavenly horse-located in the suburban Songjiang district, is the largest omnibearing movable telescope in Asia an

d is ranked third in the world in comprehensive performance. It began providing celestial observations in 2012.

While Tianma was not directly involved in the observations that led to the black hole image, its ability to see other phenome

na in the universe on certain wavelengths, contributed to the precise calibration of the final data for the image, s

cientists in Shanghai said. Tianma is part of the East Asia Very Long Baseline Interferometry Network, or EAVN.

Shen Zhiqiang, head of the Chinese Academy of Sciences’ S

hanghai Astronomical Observatory and a member of the Event Horizon Telescope (EHT) inter

national team that assembled the black hole image-more than 200 astronomers worldwide linked via a g

lobe-spanning array of eight ground-based radio telescopes-said that the equipme