Status of technological development on ECLAIRs camera onboard the SVOM space mission

This paper describes the optical design of the visible telescope (VT), which is the primary payload for the Chinese-French Space-based multi-band astronomical Variable Objects Monitor (SVOM) mission, for the detection and observation of high-redshift gamma-ray bursts. The VT aims at reaching a limiting magnitude of + 22 . 5 M v with the exposure time of 300 s in the 630 km Sun-synchronous orbit with an inclination of 30°. The VT, also known as the fine guidance sensor for the SVOM, aims to measure the relative performance error (RPE) of the platform during the tracking and provide the RPE to the platform to correct its stability. The optical design is presented in this paper. The mirror manufacture and test results are presented. The optical system performance, tolerance budget, thermal analysis, and stray light design of VT are fully analyzed. Finally, the diffraction encircled energy and point source transmittance are tested in the lab for the finished telescope.

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Optical design of the visible telescope for the SVOM mission

Fan

Zou

Qiu

et al. 2020

Appl. Opt.

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Status of technological development on ECLAIRs camera onboard the SVOM space mission

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Optical design of the visible telescope for the SVOM mission

Optical design of the visible telescope for the SVOM mission

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