CASFIS Symposium 2026 2nd Circular(December 7-11 Shanghai）
Chinese Academy of Sciences
Youth-Led Vanguard International Symposium
Toward Sub-micro-arcsecond Astrometry: Scientific Opportunities and Measurement Pathways
SECOND CIRCULAR
Following the First Circular, we are pleased to provide an update on the scientific program and participation arrangements for the symposium. Funded by the Bureau of International Cooperation, Chinese Academy of Sciences, and hosted by the Shanghai Astronomical Observatory (SHAO), the meeting will bring together international experts and early-career researchers to explore scientific opportunities and measurement pathways toward sub-micro-arcsecond astrometry.
Dates: December 7–11, 2026
Venue: Shanghai Astronomical Observatory, CAS, 80 Nandan Road, Xuhui District, Shanghai, China
Registration deadline: October 31, 2026
Website: https://conf.koushare.com/conf/casfis-smastro2026/
The symposium will focus on the science enabled by astrometry at micro- and sub-micro-arcsecond precision; future measurement approaches involving instrument concepts, detectors, laser metrology, calibration, and observing strategies; and relativistic astrometric modeling with ephemeris support. A concluding open discussion will examine scientific priorities, technical bottlenecks, and a possible roadmap for future space-based missions and international collaboration.
Carlo Paolo Sasso — Senior Researcher, Istituto Nazionale di Ricerca Metrologica (INRIM), Italy
David Hobbs — Professor, Lund University, Sweden
Mario Gai — Professor, INAF – Osservatorio Astrofisico di Torino, Italy
Talk: A sample of the technological challenges toward (sub-)micro-arcsec astrometry
Oleg Titov — Professor, Shanghai Astronomical Observatory, CAS, China
Fabo Feng — Professor, Tsung-Dao Lee Institute, China
Talk: Global Astrometry at the One-Microarcsecond Frontier
Jiacheng Liu — Professor, Nanjing University, China
Talk: Update of the Galactic coordinate system in the Gaia-CRF
Yi Xie — Professor, Purple Mountain Observatory, CAS, China
Talk: Realizing the Lunar Reference Time using a Time-Aligned Orbit
Dehua Yang — Professor, Nanjing Institute of Astronomical Optics and Technology, CAS, China
Talk: Optomechanical development of the 3-LOS prototype
Yiming Hu — Professor, Sun Yat-sen University, China
Talk: TianQin: Gravitational wave astronomy and data analysis
Mariateresa Crosta — Senior Researcher, INAF – Osservatorio Astrofisico di Torino, Italy
Alberto Vecchiato — Senior Researcher, INAF – Osservatorio Astrofisico di Torino, Italy
Talk: To be announced
Celine Boehm — Professor, The University of Sydney, Australia
Talk: To be announced
Wenbiao Han — Professor, Shanghai Astronomical Observatory, CAS, China
Talk: To be announced
Wei Tian — Dr., Shanghai Astronomical Observatory, CAS, China
Talk: To be announced
Xinyang Wang — Founder, Chairman and CEO, Gpixel Group, China
Talk: To be announced
Further invited speakers and program updates will be announced on the Meeting Schedule page.
December 7 (Monday): Participant registration and arrival.
December 8–10 (Tuesday–Thursday): Invited and contributed scientific presentations, thematic discussions, and exchanges on the three principal scientific themes.
December 10 (Thursday afternoon): Final Discussion on a possible roadmap toward sub-micro-arcsecond astrometry.
December 11 (Friday): Contributed presentations by young researchers and a planned visit to the Sheshan/Tianma facilities.
Registration. Online registration is required for all participants and closes on October 31, 2026. There is no registration fee. Participants are normally responsible for their own travel, accommodation, and personal expenses. Please register via the Online Registration page.
Oral contributions. Participants interested in giving a short presentation (approximately 10–15 minutes) are encouraged to submit their talk title and abstract during registration. Contributions will be reviewed by the Scientific Organizing Committee.
Early-career support. Subject to the availability of symposium funds and the decision of the Scientific Organizing Committee, limited financial support may be offered to approximately five outstanding postdoctoral researchers or PhD students with selected oral contributions. Interested applicants should contact the organizers directly.
Online participation. Participants unable to attend in person may join via Zoom. Access details will be provided in advance.
Accommodation and transportation. Participants are asked to arrange their own accommodation. Suggested hotels near SHAO and directions from Shanghai Hongqiao Airport/Railway Station and Shanghai Pudong Airport are available on the Hotel Reservation and Transportation pages. Advance booking is recommended.
Visa invitation letters. Participants who require an official invitation letter for a Chinese visa should register and contact the Local Organizing Committee as early as possible. Required passport and itinerary information is listed on the Contact Us page. Please verify the latest entry and visa requirements with the appropriate authorities.
Funded by: Bureau of International Cooperation, Chinese Academy of Sciences.
Hosted by: Shanghai Astronomical Observatory, Chinese Academy of Sciences.
Scientific Organizing Committee: Zhaoxiang Qi (SHAO-CAS, Chair), Mario G. Lattanzi (INAF-OATo / SHAO-CAS, Chair), Zi Zhu (NJU), Jiacheng Liu (NJU), Yuqiang Li (YNAO), Mariateresa Crosta (INAF-OATo), Jian Gao (BJNU), Qingyu Peng (JNU), Shilong Liao (SHAO-CAS, Co-Chair), René A. Méndez (Universidad de Chile).
Local Organizing Committee: Shilong Liao (Chair), Zhenghong Tang (Co-Chair), Qiqi Wu, Shaohong Zhang, Ye Ding
Shilong Liao: shilongliao@shao.ac.cn | Qiqi Wu: wuqiqi@shao.ac.cn
Shaohong Zhang: zhangshaohong@shao.ac.cn
We look forward to welcoming you to Shanghai in December 2026.
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