| Author | Search for: Baudoz, P.; Search for: Mas, M.; Search for: Galicher, R.1; Search for: Rousset, G.; Search for: Mazoyer, J. |
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| Affiliation | - National Research Council of Canada. NRC Herzberg Institute of Astrophysics
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| Format | Text, Article |
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| Conference | 2nd International Conference on Adaptive Optics for Extremely Large Telescopes, AO for ELT 2011, September 25-30, 2011, Victoria, BC Canada |
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| Abstract | Direct imaging is a powerful tool for exoplanet atmosphere characterization. High performance of these techniques requires extreme wavefront correction for ground-based instruments as well as space projects. Wavefront sensors are usually physically separated from the common optics by a beam splitter in classical AO system. This separation introduces differential aberrations that are not measured by the wavefront sensor, which limits the performance of a planet finder instrument. We propose to use the Self-Coherent Camera (SCC) to measure the aberrations directly in the final coronagraphic science focal plane. The SCC is based on the principle of light coherence and allows us to estimate the wavefront errors upstream the coronagraph by spatially encoding the speckles with fringes in the final image. After recalling the SCC principle, we will present laboratory results on speckle suppression and compare them with expected performances from numerical simulations. |
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| Publication date | 2011-09 |
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| Publisher | Office National d'Etudes et de Recherches Aerospatiales |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23005053 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 0df0fb66-a872-43da-85d4-b41eda369c12 |
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| Record created | 2019-02-20 |
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| Record modified | 2020-04-21 |
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