Old Observatory, Beijing
Welcome to the C41/ICHA website
This website contains latest news and reports as well as further information on the Commission‘s structure, Working Groups, aims, history, recent activities, etc, and archival materials and documents.

Following the Beijing GA the Commission’s new webmaster, David Valls-Gebaud, will be taking over the maintenance of our website. Please watch this space for further news and updates.
C41/ICHA meetings at the IAU General Assembly in Beijing
The Commission’s Business Meeting took place on 22 Aug 2012 and a report will be posted on this site as soon as possible. The new OC is now in place.
Meanwhile, the science meetings of the Commission and its Working Groups continue. Click here to access a full programmes of these meetings.
Click here for a downloadable PDF version of the abstracts booklet for these sessions. A few paper copies are still available for those actually attending in Beijing.
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Commission members visit Beijing Ancient Observatory during the IAU 28th General Assembly, 25 Aug 2012
Launch of Astronomical Heritage Web Portal
The new web portal serving UNESCO’s Astronomy and World Heritage Initiative was launched on August 24 at the sessions of the Astronomy and World Heritage Working Group. The site, which resides at, is a dynamic, publicly accessible database, discussion forum and document repository on astronomical heritage sites throughout the world, even if they are not on UNESCO’s World Heritage List.
Proceedings of ICOA-7
The proceedings of the International Conference on Oriental Astronomy (ICOA–7) are available from Mitsuru Soma

IAU S278 Proceedings
are now available
Archaeoastronomy and Ethnoastronomy: Building Bridges between Cultures
(the 9th “Oxford” International Symposium on Archaeoastronomy)
Astronomy and World Heritage
IAU Working Group on Astronomy and World Heritage
The Commission’s Astronomy and World Heritage Working Group is working with UNESCO to advance their Astronomy and World Heritage Initiative

ICOMOS–IAU Thematic Study
The printed edition of the ICOMOS–IAU Thematic Study on the Heritage Sites of Astronomy and Archaeoastronomy is now available

SpS5 - IAU GA Rio
The proceedings of the Rio GA Special Session on “Accelerating the Rate of Astronomical Discovery” have been published in Proceedings of Science