NEWS
-
Eliminating errors, automating observation: The Photographic Zenith Tube of the Neuchâtel Observatory in Switzerland
Eliminating errors, automating observation: The Photographic Zenith Tube of the Neuchâtel Observatory in Switzerland, by Julien Gressot In the mid-twentieth century, the Neuchâtel Observatory decided to modify its time determination …
-
In Celsius’ footsteps, by Ian Hembrow
In Celsius’ footsteps, by Ian Hembrow Retracing the route of the 1736-37 Arctic Circle expedition to establish the shape of the Earth A daily blog by SIS member and travel …
-
Bulletin 153 – June 2022
BULLETIN 153 – June 2022 Members of the SIS receive print copies of all Bulletins, as well as access to the complete Bulletin archive. In order to give website visitors …