http://www.cnr.it/ontology/cnr/individuo/prodotto/ID294205

Optical design of a near-infrared imaging spectropolarimeter for the Advanced Technology Solar Telescope (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Optical design of a near-infrared imaging spectropolarimeter for the Advanced Technology Solar Telescope (Articolo in rivista) (literal)

Anno

2013-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1117/1.OE.52.6.063001 (literal)

Alternative label

Greco, Vincenzo; Cavallini, Fabio (2013)
Optical design of a near-infrared imaging spectropolarimeter for the Advanced Technology Solar Telescope
in Optical engineering (Bellingham, Print)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Greco, Vincenzo; Cavallini, Fabio (literal)

Pagina inizio

063001 (literal)

Pagina fine

063001 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.scopus.com/inward/record.url?eid=2-s2.0-84901203601&partnerID=q2rCbXpz (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

52 (literal)

Rivista

Optical engineering (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

9 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

6 (literal)

Note

ISI Web of Science (WOS) (literal)
Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

Consiglio Nazionale Delle Ricerche-Istituto Nazionale di Ottica, Largo Enrico Fermi 6, 50125 Firenze, Italy; Istituto Nazionale di Astrofisica-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy (literal)

Titolo

Optical design of a near-infrared imaging spectropolarimeter for the Advanced Technology Solar Telescope (literal)

Abstract

In designing the optics of an imaging multi-etalon spectro polarimeter as a post-focus instrument for the Advanced Technology Solar Telescope (ATST), many constraints must be considered. Among these are the large entrance pupil diameter of the telescope (4 m), the demanded large field of view (>= 90 arc sec), high spectral resolving power (>= 200; 000), and limited field-dependent blue-shift of the instrumental profile [<= 3 full width at half maximum (FWHM)], which require Fabry-Perot interferometers of large diameter (>= 200 mm), lighted by highly collimated beams. This implies large optical elements and long optical paths. Moreover, to use interference pre-filters with a relatively small diameter (<= 70 mm) and placed between the interferometers to reduce the inter-reflections in axial-mount, a \"pupil adapter\" must be included with a further increase of the optical path length. Although a multi-etalon spectropolarimeter works in quasi-monochromatic light, the Fraunhofer lines of interest cover a wide range of wavelengths (850 to 1650 nm), which demands a good chromatic aberration control. A low instrumental polarization (<= 0.5%) is also required to allow a high polarimetric precision. Finally, some secondary optical paths are required to perform the initial instrumental setup and to secure the best instrumental performances. A diffraction-limited optical solution for ATST is described that fulfills all the above requirements in a relative small volume. (c) 2013 Society of Photo-Optical Instrumentation Engineers (SPIE) (literal)

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