Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/29909
Campo DC | Valore | Lingua |
---|---|---|
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 | 2021-01-21T09:53:50Z | - |
dc.date.available | 2021-01-21T09:53:50Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29909 | - |
dc.description.abstract | We show numerical simulations with monochromatic light in the visible for the LBTI Fizeau imager, including opto-dynamical aberrations due here to adaptive optics (AO) errors and to differential piston fluctuations, while other errors have been neglected. The achievable Strehl by the LBTI using two AO is close to the Strehl provided by a single standalone AO system, as long as other differential wavefront errors are mitigated. The LBTI Fizeau imager is primarily limited by the AO performance and by the differential piston/tip-tilt errors. Snapshots retain high-angular resolution and high-contrast imaging information by freezing the fringes against piston errors. Several merit functions have been critically evaluated in order to characterize point spread functions and the modulation transfer functions for high-contrast imaging applications. The LBTI Fizeau mode can provide an image quality suitable for standard science cases (i.e. a Strehl above 70 per cent) by performing both at a time: an AO correction better than ≈λ/18 RMS for both short and long exposures, and a piston correction better than ≈λ/8 RMS for long exposures or simply below the coherence length for short exposures. Such results, which can be applied to any observing wavelength, suggest that AO and piston control at the LBTI would already improve the contrast at near- and mid-infrared wavelengths. Therefore, the LBTI Fizeau imager can be used for high-contrast imaging, providing a high-Strehl regime (by both AO systems), a cophasing mode (by a fringe tracker) and a burst mode (by a fast camera) to record fringed speckles in short exposures. | en_US |
dc.language.iso | eng | en_US |
dc.title | The LBTI Fizeau imager - II. Sensitivity of the PSF and the MTF to adaptive optics errors and to piston errors | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stx2016 | en_US |
dc.identifier.scopus | 2-s2.0-85052529537 | en_US |
dc.identifier.isi | 000413088400064 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/472/3/3288/4079532 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 472 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 3288 | en_US |
dc.type.referee | REF_1 | 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.472.3288P | 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 | - |
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