Optimized optical system with a 1.65 m wide-field corrector for the 6.5 m high-performance MUltiplexed Survey Telescope.

The development of modern large-scale spectroscopic survey telescopes responds to the urgent demand for spectral information in astronomical research. Tsinghua University has previously proposed a 6.5 m MUltiplexed Survey Telescope consisting of a Ritchey-Chretien configuration and a 1.

Compact, UAV-mounted hyperspectral imaging system with automatic geometric distortion rectification.

A highly compact hyperspectral imager with an automatic geometric rectification function is developed in this study, which can be mounted on a UAV for ultra-wide range hyperspectral imaging. For better application, the system can provide visible light image transmission and hyperspectral imaging in the real-time mode. A specific design is proposed to allow the visible light camera and hyperspectral camera to share the same telescope optical path, making the system have a high integration level with a total mass of 1.

Underwater hyperspectral imaging system using a prism-grating-prism structure.

An underwater hyperspectral imager (UHI) detection system is designed and developed, and a push-broom scan imaging mode was used. The telescope system adopts an image-side telecentric design with 22 mm focal length and 11×11 field of view. A prism-grating-prism structure was used as the spectral unit of spectrometer system to reduce spectral line bending.

Spaceborne limb hyperspectral imager for ozone profile detection.

A spaceborne limb hyperspectral imager for ozone detection is designed and developed. The hyperspectral imager can provide the limb hyperspectral radiances images with wide-band and large dynamic range. It is composed of an off-axis parabolic telescope and prism dispersive off-axis aspheric spectrometer, and large dynamic range detection can be realized by using a band-attenuation filter.