PLATO: a multiple telescope spacecraft for exo-planets hunting

Roberto Ragazzoni; Demetrio Magrin; Heike Rauer; Isabella Pagano; Valerio Nascimbeni; Giampaolo Piotto; Daniele Piazza; Patrick Levacher; Mario Schweitzer; Stefano Basso; Timothy Bandy; Willy Benz; Maria Bergomi; Federico Biondi; Anko Boerner; Francesco Borsa; Alexis Brandeker; Mathias Brändli; Giordano Bruno; Juan Cabrera; Simonetta Chinellato; Thierry De Roche; Marco Dima; Anders Erikson; Jacopo Farinato; Matteo Munari; Mauro Ghigo; Davide Greggio; Marco Gullieuszik; Maximilian Klebor; Luca Marafatto; Valery Mogulsky; Gisbert Peter; Martin Rieder; Daniela Sicilia; Daniele Spiga; Valentina Viotto; Matthias Wieser; Ana Maria Heras; Philippe Gondoin; Pierre Bodin; Claude Catala

doi:10.1117/12.2236094

29 July 2016 PLATO: a multiple telescope spacecraft for exo-planets hunting

Roberto Ragazzoni, Demetrio Magrin, Heike Rauer, Isabella Pagano, Valerio Nascimbeni, Giampaolo Piotto, Daniele Piazza, Patrick Levacher, Mario Schweitzer, Stefano Basso, Timothy Bandy, Willy Benz, Maria Bergomi, Federico Biondi, Anko Boerner, Francesco Borsa, Alexis Brandeker, Mathias Brändli, Giordano Bruno, Juan Cabrera, Simonetta Chinellato, Thierry De Roche, Marco Dima, Anders Erikson, Jacopo Farinato, Matteo Munari, Mauro Ghigo, Davide Greggio, Marco Gullieuszik, Maximilian Klebor, Luca Marafatto, Valery Mogulsky, Gisbert Peter, Martin Rieder, Daniela Sicilia, Daniele Spiga, Valentina Viotto, Matthias Wieser, Ana Maria Heras, Philippe Gondoin, Pierre Bodin, Claude Catala

Author Affiliations +

Proceedings Volume 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave; 990428 (2016) https://doi.org/10.1117/12.2236094
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

PLATO stands for PLAnetary Transits and Oscillation of stars and is a Medium sized mission selected as M3 by the European Space Agency as part of the Cosmic Vision program. The strategy behind is to scrutinize a large fraction of the sky collecting lightcurves of a large number of stars and detecting transits of exo-planets whose apparent orbit allow for the transit to be visible from the Earth. Furthermore, as the transit is basically able to provide the ratio of the size of the transiting planet to the host star, the latter is being characterized by asteroseismology, allowing to provide accurate masses, radii and hence density of a large sample of extra solar bodies. In order to be able to then follow up from the ground via spectroscopy radial velocity measurements these candidates the search must be confined to rather bright stars. To comply with the statistical rate of the occurrence of such transits around these kind of stars one needs a telescope with a moderate aperture of the order of one meter but with a Field of View that is of the order of 50 degrees in diameter. This is achieved by splitting the optical aperture into a few dozens identical telescopes with partially overlapping Field of View to build up a mixed ensemble of differently covered area of the sky to comply with various classes of magnitude stars. The single telescopes are refractive optical systems with an internally located pupil defined by a CaF2 lens, and comprising an aspheric front lens and a strong field flattener optical element close to the detectors mosaic. In order to continuously monitor for a few years with the aim to detect planetary transits similar to an hypothetical twin of the Earth, with the same revolution period, the spacecraft is going to be operated while orbiting around the L2 Lagrangian point of the Earth-Sun system so that the Earth disk is no longer a constraints potentially interfering with such a wide field continuous uninterrupted survey.

Citation Download Citation

Roberto Ragazzoni, Demetrio Magrin, Heike Rauer, Isabella Pagano, Valerio Nascimbeni, Giampaolo Piotto, Daniele Piazza, Patrick Levacher, Mario Schweitzer, Stefano Basso, Timothy Bandy, Willy Benz, Maria Bergomi, Federico Biondi, Anko Boerner, Francesco Borsa, Alexis Brandeker, Mathias Brändli, Giordano Bruno, Juan Cabrera, Simonetta Chinellato, Thierry De Roche, Marco Dima, Anders Erikson, Jacopo Farinato, Matteo Munari, Mauro Ghigo, Davide Greggio, Marco Gullieuszik, Maximilian Klebor, Luca Marafatto, Valery Mogulsky, Gisbert Peter, Martin Rieder, Daniela Sicilia, Daniele Spiga, Valentina Viotto, Matthias Wieser, Ana Maria Heras, Philippe Gondoin, Pierre Bodin, and Claude Catala "PLATO: a multiple telescope spacecraft for exo-planets hunting", Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 990428 (29 July 2016); https://doi.org/10.1117/12.2236094

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available