Development of the Multi-channel Photometric Survey Telescope | |
Yuan XY(袁祥岩)![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
2020-12 | |
Conference Name | SPIE ASTRONOMICAL TELESCOPES + INSTRUMENTATION |
Source Publication | Proc. SPIE 11445 |
Conference Date | 2020-12-13 |
Conference Place | California, United States |
Abstract |
The Multi-channel Photometric Survey Telescope (Mephisto) is a wide-field ground based telescope with a 1.6m primary mirror and 2° field of view, proposed by Yunnan University. The telescope will be capable of imaging the northern sky in three colors simultaneously and deliver a colored movie of the universe. The R-C system with lens corrector was adopted as the optical system considering of the image quality requirement, light obscuration and camera arrangement, in which three cubic splitters were adopted for the three channel beams in order to get satisfied image quality over the whole field of view. Dichroic coating on the cubic will lead to nonuniform efficiency on the focal plane due to the polarization problem and wide incident angle, which need calibration. The image quality represented in 80% encircled light energy is around 0.6arcsec. In order to keep the optimal image quality in any operational conditions, a 5-DOF mechanism was designed to actively adjust M2 mirror positions according to the wavefront sensors or by direct star psf. Now the telescope are under developing in Nanjing, expected to be installed at Lijiang observatory before the end of 2021. |
Keyword | Optical Telescope, Multi-channel Survey Image Quality Calibration |
Subject Area | 天文技术与方法 |
Language | 英语 |
Document Type | 会议论文 |
Identifier | http://ir.niaot.ac.cn/handle/114a32/1773 |
Collection | 会议论文 |
Affiliation | 南京天文光学技术研究所 |
Recommended Citation GB/T 7714 | Yuan XY,Li ZY,Niu DS,et al. Development of the Multi-channel Photometric Survey Telescope[C],2020. |
Files in This Item: | Download All | |||||
File Name/Size | DocType | Version | Access | License |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment