Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/29907
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Patru, F. | en_US |
dc.contributor.author | ESPOSITO, Simone | en_US |
dc.contributor.author | PUGLISI, Alfio Timothy | en_US |
dc.contributor.author | RICCARDI, Armando | en_US |
dc.contributor.author | PINNA, Enrico | en_US |
dc.contributor.author | ARCIDIACONO, CARMELO | en_US |
dc.contributor.author | Antichi, J. | en_US |
dc.contributor.author | Mennesson, B. | en_US |
dc.contributor.author | Defrère, D. | en_US |
dc.contributor.author | Hinz, P. M. | en_US |
dc.contributor.author | Hill, J. M. | en_US |
dc.date.accessioned | 2021-01-21T09:48:22Z | - |
dc.date.available | 2021-01-21T09:48:22Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29907 | - |
dc.description.abstract | We show by numerical simulations a fundamental gain in contrast when combining coherently monochromatic light from two adaptive optics (AO) telescopes instead of using a single stand-alone AO telescope, assuming efficient control and acquisition systems at high speed. A contrast gain map is defined as the normalized point spread functions (PSFs) ratio of a single Large Binocular Telescope (LBT) aperture over the dual Large Binocular Telescope Interferometer (LBTI) aperture in Fizeau mode. The global gain averaged across the AO-corrected field of view is improved by a factor of 2 in contrast in long exposures and by a factor of 10 in contrast in short exposures (i.e. in exposures, respectively, longer or shorter than the coherence time). The fringed speckle halo in short exposures contains not only high-angular resolution information, as stated by speckle imaging and speckle interferometry, but also high-contrast imaging information. A high-gain zone is further produced in the valleys of the PSF formed by the dark Airy rings and/or the dark fringes. Earth rotation allows us to exploit various areas in the contrast gain map. A huge-contrast gain in narrow zones can be achieved when both a dark fringe and a dark ring overlap on to an exoplanet. Compared to a single 8-m LBT aperture, the 23-m LBTI Fizeau imager can provide a gain in sensitivity (by a factor of 4), a gain in angular resolution (by a factor of 3) and, as well, a gain in raw contrast (by a factor of 2-1000 varying over the AO-corrected field of view). | en_US |
dc.language.iso | eng | en_US |
dc.title | The LBTI Fizeau imager - I. Fundamental gain in high-contrast imaging | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stx1961 | en_US |
dc.identifier.scopus | 2-s2.0-85030569360 | en_US |
dc.identifier.isi | 000413088400004 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/472/3/2544/4062199 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 472 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 2544 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2017MNRAS.472.2544P | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_6 Stars and stellar systems | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.orcid | 0000-0002-3114-677X | - |
crisitem.author.orcid | 0000-0001-9553-8804 | - |
crisitem.author.orcid | 0000-0001-5460-2929 | - |
crisitem.author.orcid | 0000-0002-6243-5697 | - |
crisitem.author.orcid | 0000-0003-0142-8108 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
stx1961.pdf | PDF editoriale | 5.5 MB | Adobe PDF | View/Open |
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