2023/10/12 by E. Davoust, Davoust, Emmanuel
Physics and Astronomy · #Astro and Planetary Science #Earth and Planetary Astrophysics (astro-ph.EP) #FOS: Physical sciences #History and Developments in Astronomy #History and Philosophy of Physics (physics.hist-ph) #Instrumentation and Methods for Astrophysics (astro-ph.IM)
paper · pdf · doi:10.48550/arxiv.2401.10892
openalex publication_date 2023/10/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Henri Camichel was an astronomer at Pic du Midi Observatory, where he contributed to the study of planets of the solar system and their satellites with Audouin Dollfus and his team. In 1961, with Charles Boyer, he found that the upper atmosphere of Venus had a counter-clockwise rotation of four days, which was later confirmed by space probes, as were the team's accurate measurements of the diameters of planets. He was also an instrumentalist, and contributed to the maintenance and development of the telescopes, notably the 2-meter telescope and focal instruments at Pic du Midi Observatory.