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Speaker |
Sigismondi, Costantino |
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Coauthors |
Costantino Sigismondi, Daniele Impellizzeri, Aurora Di Felice, Andrea Brucato, Alessia De Filippi, Nicole Cianetti, Jaheng Wang, Francesco Laurenti |
| Talk Title |
The Sodium D-Line in Rome from Angelo Secchi to Alessandro Cacciani |
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Abstract |
Optical spectroscopy developped so much in XIX century that many results required the quantum physics to be fully explained from selection rules to quantum probability. Angelo Secchi designed or modified some instruments like the Hoffman prisms to reach a great resolution, namely better than 1 Angstrom around the Sodium D-Lines. Alessandro Cacciani, who worked in Monte Mario Observatory and Sapienza University of Rome, invented and developped the MOF Magneto-Optical Filter by tuning the magnetic field in a vaporized sodium cell. The MOF is being used in the two MOT telescopes in Anctartica, and has been used in US and EU telescope reaching an extraordinary velocity resolution in the dopplerograms of the Sun. Two inventors in comparison, at a century of temporal distance, with Mount Mario Observatory ideally inherited the Collegio Romano story, because had the Merz telescope of Secchi until the fire of July 15, 1958. |
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Talk view |
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