2 papers
astro-ph.IM2015
Optical Deformations in Solar Glass Filters for High Precision Astrometry
Costantino Sigismondi, Alexandre Humberto Andrei, Sérgio Calderari Boscardin +2
Measuring the solar diameter at all position angles gives the complete figure of the Sun. Their asphericities have implications in classical physics and general relativity, and the…
astro-ph.IM2013
Venus transits: history and opportunities for planetary, solar and gravitational physics
Costantino Sigismondi, Xiaofan Wang, Patrick Rocher +1
The data of 2012 transit of Venus are compared with the ones of 2004. The thickness of the atmosphere of Venus, its aureole and the effect of oblateness and other asphericities in…