Clive Ruggles

Astronomical heritage

Portal to the Heritage of Astronomy

Read more on the UNESCO–IAU Portal to the Heritage of Astronomy and other heritage matters

Free downloads

Stonehenge and Ancient Astronomy


Download a copy of the Royal Astronomical Society’s factsheet


Astronomical Heritage


Follow to download a copy of the ICOMOSIAU Thematic Study

Image collection

Leicester University Archive



This archival collection of c. 1100 images of archaeological and archaeoastronomical interest has been available on-line since 1995. Thousands of new images are (very!) gradually being made available— see here


… is the study of beliefs and practices relating to the sky in the past, especially in prehistory, and the uses to which people's know- ledge of the skies was put.


Professional bodies

Free software tools

Basic declination calculator


by Andrew Smith

See the Tools page for more info


Published August 2014:


Ocarina Books publishes and distributes books relating to archaeo- and ethnoastronomy