The Visible Telescope onboard the Chinese-French SVOM Satellite

doi:10.1117/12.2561854

CORC > 西安光学精密机械研究所 > 中国科学院西安光学精密机械研究所 > 空间光学应用研究室

	The Visible Telescope onboard the Chinese-French SVOM Satellite
	Fan, Xuewu; Zou, Gangyi; Wei, Jianyan; Qiu, Yulei; Gao, Wei; Wang, Wei; Yang, Wengang; Zhang, Jian; Li, Chuang; Zhao, Hui
	2021
会议日期	2020-12-14
会议地点	ELECTR NETWORK
关键词	GRBs SVOM VT RC catadioptric FGS CFRP TEC
卷号	11443
DOI	10.1117/12.2561854
英文摘要	The Space-based multi-band astronomical Variable Objects Monitor (SVOM) project is a dedicated satellite developed at the cooperation of China and France, aim to make prompt multi-band observations of Gamma-Ray Bursts (GRBs), the afterglows and other high-energy transient astronomical events. The Visible Telescope (VT) is one of the four payloads onboard the SVOM. VT is designed to observe the afterglows of GRBs both in the visible and near infrared bands simultaneously. The telescope can reach a limiting magnitude of +22.5Mv and provide the redshift indicators for high-Z (z>4) GRBs. VT is also designed to measure the Relative Performance Errors (RPEs) for the satellite attitude and orbit control system (AOCS), aiming to improve the pointing stability of the platform during observation. VT adopts a Ritchey-Chretien (RC) catadioptric optical configuration with a 440mm aperture and uses the dichroic prism before the focal plane to split the incident light into blue ( visible) and red (near infrared) band. Two Fine Guidance Sensor (FGS) CCDs are mounted beside the main CCD on the blue band focal plane of VT and provide sub-arcsecond pixel resolution. Fiber reinforced plastic (CFRP) composites is selected as the material of VT's main structure to ensure enough stiffness and strength during launch. The electrical video processing circuit is carefully designed to make the readout noise below 6e-/pix (rms) in 100s exposure time. Active and passive thermal control are used together to ensure the optical performance and thermoelectric cooler (TEC) is adopted to control the main CCDs working temperature below -65 degrees C to reduce the noise. This paper provides a comprehensive overview of the scientific requirements and the key instrument design aspects of optics, main structure, electrics, thermal control, performance test and validation results of VT.
产权排序	1
会议录	SPACE TELESCOPES AND INSTRUMENTATION 2020: OPTICAL, INFRARED, AND MILLIMETER WAVE
会议录出版者	SPIE-INT SOC OPTICAL ENGINEERING
语种	英语
ISSN号	0277-786X;1996-756X
ISBN号	978-1-5106-3674-3
WOS记录号	WOS:000646193100010
内容类型	会议论文
源URL	[http://ir.opt.ac.cn/handle/181661/94825]
专题	西安光学精密机械研究所_空间光学应用研究室
推荐引用方式 GB/T 7714	Fan, Xuewu,Zou, Gangyi,Wei, Jianyan,et al. The Visible Telescope onboard the Chinese-French SVOM Satellite[C]. 见:. ELECTR NETWORK. 2020-12-14.