Suggested quasi-Cassegrain system for multi-beam observation of FAST

• Published in: Research in astronomy and astrophysics Vol. 20; no. 1; pp. 1 - 5
• Main Authors: Su, Ding-Qiang, Bai, Hua, Cui, Xiang-Qun
• Format: Journal Article
• Language: English
• Published: Beijing National Astronomical Observatories, CAS and IOP Publishing Ltd 01.01.2020; IOP Publishing
• Subjects: Image quality; instrumentation: miscellaneous; methods: miscellaneous; Parabolic bodies; Phased arrays; Radio telescopes; surveys; techniques: miscellaneous; telescope

FAST, the largest single-dish radio telescope in the world, has a 500-meter diametermain reflector and a 300-meter diameter illuminated area. It has amain reflector that can vary its shape, which continuously changes the shape of the illuminated area in reflector into a paraboloid. In this article,...