Conceptual design of the optical system of the 6.5m wide field multiplexed survey telescope with excellent image quality
Abstract Astrophysics and cosmology in the coming decades urgently need a large field-of-view (FOV), highly multiplexed spectroscopic survey telescope satisfying challenging image quality and stability requirements. The 6.5 m MUltiplexed Survey Telescope (MUST) proposed by Tsinghua University will b...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2023-05-01
|
| Series: | PhotoniX |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s43074-023-00094-4 |
| _version_ | 1797822668160892928 |
|---|---|
| author | Yifan Zhang Haijiao Jiang Stephen Shectman Dehua Yang Zheng Cai Yong Shi Song Huang Lu Lu Yamin Zheng Shaonan Kang Shude Mao Lei Huang |
| author_facet | Yifan Zhang Haijiao Jiang Stephen Shectman Dehua Yang Zheng Cai Yong Shi Song Huang Lu Lu Yamin Zheng Shaonan Kang Shude Mao Lei Huang |
| author_sort | Yifan Zhang |
| collection | DOAJ |
| description | Abstract Astrophysics and cosmology in the coming decades urgently need a large field-of-view (FOV), highly multiplexed spectroscopic survey telescope satisfying challenging image quality and stability requirements. The 6.5 m MUltiplexed Survey Telescope (MUST) proposed by Tsinghua University will be constructed on the Saishiteng Mountain of Northwest China to improve the spectroscopic survey capability of ground-based optical telescopes. In this paper, we demonstrate the conceptual design of the optical system of MUST. MUST will adopt a 6.5 m primary mirror, a 2.45 m secondary mirror, and a multiple-element widefield corrector (WFC) to ensure excellent image quality with an 80% encircled energy size of image spots less than ~ 0.6 arcsec in diameter for the entire 3° FOV and the whole 50° zenith angle range. Thanks to its compact 6.5 m Ritchey-Chretien system and 20,000 optical fibers on its Cassegrain focus, MUST will carry out state-of-the-art wide-field spectroscopic surveys with efficiency ~ 19 times higher than the Dark Energy Spectroscopic Instrument (DESI) using a measure proposed by Ellis et al. Upon completion around 2029, MUST will be one of the world's most advanced wide-field spectroscopic survey telescopes and a new essential reference for the future development of wide-field survey telescopes. It will enable significant advances in many fields in astrophysics and cosmology. |
| first_indexed | 2024-03-13T10:12:32Z |
| format | Article |
| id | doaj.art-5a785f36ac3b460ca9ed2c287bb0dc30 |
| institution | Directory Open Access Journal |
| issn | 2662-1991 |
| language | English |
| last_indexed | 2024-03-13T10:12:32Z |
| publishDate | 2023-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | PhotoniX |
| spelling | doaj.art-5a785f36ac3b460ca9ed2c287bb0dc302023-05-21T11:26:16ZengSpringerOpenPhotoniX2662-19912023-05-014112510.1186/s43074-023-00094-4Conceptual design of the optical system of the 6.5m wide field multiplexed survey telescope with excellent image qualityYifan Zhang0Haijiao Jiang1Stephen Shectman2Dehua Yang3Zheng Cai4Yong Shi5Song Huang6Lu Lu7Yamin Zheng8Shaonan Kang9Shude Mao10Lei Huang11MUltiplexed Survey Telescope (MUST) Project Collaboration, Tsinghua UniversityMUltiplexed Survey Telescope (MUST) Project Collaboration, Tsinghua UniversityCarnegie Institution of WashingtonMUltiplexed Survey Telescope (MUST) Project Collaboration, Tsinghua UniversityMUltiplexed Survey Telescope (MUST) Project Collaboration, Tsinghua UniversitySchool of Astronomy and Space Science, Nanjing UniversityMUltiplexed Survey Telescope (MUST) Project Collaboration, Tsinghua UniversityMUltiplexed Survey Telescope (MUST) Project Collaboration, Tsinghua UniversityMUltiplexed Survey Telescope (MUST) Project Collaboration, Tsinghua UniversityMUltiplexed Survey Telescope (MUST) Project Collaboration, Tsinghua UniversityMUltiplexed Survey Telescope (MUST) Project Collaboration, Tsinghua UniversityMUltiplexed Survey Telescope (MUST) Project Collaboration, Tsinghua UniversityAbstract Astrophysics and cosmology in the coming decades urgently need a large field-of-view (FOV), highly multiplexed spectroscopic survey telescope satisfying challenging image quality and stability requirements. The 6.5 m MUltiplexed Survey Telescope (MUST) proposed by Tsinghua University will be constructed on the Saishiteng Mountain of Northwest China to improve the spectroscopic survey capability of ground-based optical telescopes. In this paper, we demonstrate the conceptual design of the optical system of MUST. MUST will adopt a 6.5 m primary mirror, a 2.45 m secondary mirror, and a multiple-element widefield corrector (WFC) to ensure excellent image quality with an 80% encircled energy size of image spots less than ~ 0.6 arcsec in diameter for the entire 3° FOV and the whole 50° zenith angle range. Thanks to its compact 6.5 m Ritchey-Chretien system and 20,000 optical fibers on its Cassegrain focus, MUST will carry out state-of-the-art wide-field spectroscopic surveys with efficiency ~ 19 times higher than the Dark Energy Spectroscopic Instrument (DESI) using a measure proposed by Ellis et al. Upon completion around 2029, MUST will be one of the world's most advanced wide-field spectroscopic survey telescopes and a new essential reference for the future development of wide-field survey telescopes. It will enable significant advances in many fields in astrophysics and cosmology.https://doi.org/10.1186/s43074-023-00094-4Spectroscopic survey telescopeRitchey-Chretien systemCassegrain focusField-of-viewAtmospheric dispersion corrector |
| spellingShingle | Yifan Zhang Haijiao Jiang Stephen Shectman Dehua Yang Zheng Cai Yong Shi Song Huang Lu Lu Yamin Zheng Shaonan Kang Shude Mao Lei Huang Conceptual design of the optical system of the 6.5m wide field multiplexed survey telescope with excellent image quality PhotoniX Spectroscopic survey telescope Ritchey-Chretien system Cassegrain focus Field-of-view Atmospheric dispersion corrector |
| title | Conceptual design of the optical system of the 6.5m wide field multiplexed survey telescope with excellent image quality |
| title_full | Conceptual design of the optical system of the 6.5m wide field multiplexed survey telescope with excellent image quality |
| title_fullStr | Conceptual design of the optical system of the 6.5m wide field multiplexed survey telescope with excellent image quality |
| title_full_unstemmed | Conceptual design of the optical system of the 6.5m wide field multiplexed survey telescope with excellent image quality |
| title_short | Conceptual design of the optical system of the 6.5m wide field multiplexed survey telescope with excellent image quality |
| title_sort | conceptual design of the optical system of the 6 5m wide field multiplexed survey telescope with excellent image quality |
| topic | Spectroscopic survey telescope Ritchey-Chretien system Cassegrain focus Field-of-view Atmospheric dispersion corrector |
| url | https://doi.org/10.1186/s43074-023-00094-4 |
| work_keys_str_mv | AT yifanzhang conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality AT haijiaojiang conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality AT stephenshectman conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality AT dehuayang conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality AT zhengcai conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality AT yongshi conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality AT songhuang conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality AT lulu conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality AT yaminzheng conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality AT shaonankang conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality AT shudemao conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality AT leihuang conceptualdesignoftheopticalsystemofthe65mwidefieldmultiplexedsurveytelescopewithexcellentimagequality |