Author Affiliations
Abstract
1 Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China
2 Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
Our adaptive optics system based on a non-modulation pyramid wavefront sensor is integrated into a 1.8 m astronomical telescope installed at the Yunnan Observatory in LiJiang, and the first light with high-resolution imaging of an astronomical star is successfully achieved. In this Letter, the structure and performance of this system are introduced briefly, and then the observation results of star imaging are reported to show that the angular resolution of an adaptive optics system using a non-modulation pyramid wavefront sensor can approach the diffraction limit quality of a 1.8 m telescope.
010.1080 Active or adoptive optics 010.7350 Wave-front sensing Chinese Optics Letters
2016, 14(10): 100101
1 安徽农业大学园艺学博士后流动站, 安徽 合肥 230036
2 安徽农业大学茶与食品科技学院, 安徽 合肥 230036
3 贵州省茶叶科学研究所, 贵州 湄潭 564100
本文综述了国内外辐照处理对茶叶卫生质量、感官品质、内含物的影响以及农残降解的研究进展, 展望了辐照技术在茶叶上的应用前景和发展方向, 为辐照技术在茶叶上的产业化应用提供参考依据。
辐照 茶叶 化学成分 感官品质 农残降解 irradiation tea chemical constituents sensory quality radiolytic degradation
Author Affiliations
Abstract
A real-time method for measuring atmospheric parameters based on co-processor field-programmable gate array (FPGA) and main processor digital signal processing (DSP) is proposed for ground-based telescopes with adaptive optics (AO) systems. Coherence length, outer scale, average wind speed, and coherence time are estimated according to closed-loop data on the residual slopes and the corrected voltages of AO systems. This letter introduces the principle and architecture design of the proposed method, which is successfully applied in the 127-element AO system of the 1.8-m telescope of Yunnan Astronomical Observatory. The method enables real-time atmospheric observations with the same object and path of the AO system. This method is also applicable to extended objects.
010.1080 Active or adoptive optics 010.1330 Atmospheric turbulence 110.1080 Active or adoptive optics 200.4560 Optical data processing Chinese Optics Letters
2012, 10(12): 120101
