The VLTI — A Status Report

Glindemann, Andreas; Algomedo, J.; Amestica, Rodrigo; Ballester, P.; Bauvir, Bertrand; Bugueño, E.; Correia, Serge; Delgado, Francisco; Delplancke, F.; Dérie, F.; Duhoux, Ph.; Folco, E. Di; Gennai, A.; Gilli, Bruno; Giordano, P.; Gitton, Ph.; Guisard, Stéphane; Housen, Nico; Huxley, Alexis; Kervella, P.; Kiekebusch, M.; Koehler, Bertrand; Lévêque, S.; Longinotti, Antonio; Ménardi, Serge; Morel, S.; Paresce, F.; Duc, Than Phan; Richichi, A.; Schöller, M.; Tarenghi, M.; Wallander, Anders; Wittkowski, M.; Wilhelm, Rainer

doi:10.1007/978-94-017-0157-0_3

Cited by 6 publications

(4 citation statements)

References 4 publications

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“…Currently, a three-beam, near-IR instrument (AMBER) and a two-beam mid-IR instrument (MIDI; Leinert et al, 2003) are available. For a general technical overview of the VLTI, see, for instance, Glindemann et al (2003). Details of the VLTI instruments can also be found on the ESO web pages: http://www.eso.org/projects/vlti/.…”

Section: How Asteroid Sizes Can Be Measured With the Vltimentioning

confidence: 99%

MIDI observations of 1459 Magnya: First attempt of interferometric observations of asteroids with the VLTI

Delbò

Gai

Ligori

et al. 2006

Icarus

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Section: How Asteroid Sizes Can Be Measured With the Vltimentioning

confidence: 99%

MIDI observations of 1459 Magnya: First attempt of interferometric observations of asteroids with the VLTI

Delbò

Gai

Ligori

et al. 2006

Icarus

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“…It means that the aperture size is the main limiting factor for resolution increase, and for the conventional imaging methods, expanding the aperture seems to be the only way to enhance optical resolution. However, expanding the aperture usually means an increase in system size, structural complexity, and manufacturing cost, making it difficult to improve the optical resolution [5][6] .…”

Section: Introductionmentioning

confidence: 99%

A far-field super-resolution imaging method based on phase constructive

Guan

2023

J. Phys.: Conf. Ser.

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Super-resolution imaging under passive illumination is always a crucial issue to be addressed. Because the wavefront of an incoherent light field is not easily detected, it is hard to achieve super-resolution imaging by synthetic aperture under passive illumination. In this work, we proposed a super-resolution method based on phase constructive. We use a quadrature phase-shifting algorithm to retrieve the wavefront from a series of correlation patterns and reconstruct the super-resolution image with a wavefront synthesis algorithm. A simulation result verifies the effectiveness of our proposed method with a USAF-1951 target as the object.

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“…Higher resolution is available using optical or infrared interferometers such as the Navy Prototype Optical Interferometer [1] (NPOI), the Very Large Telescope Interferometer [2], or the CHARA array [3]. These interferometers can measure diameters of stars, with most stars visible to the naked eye having angular diameters of a few mas or less.…”

Section: Introductionmentioning

confidence: 99%

Navy Prototype Optical Interferometer observations of geosynchronous satellites

et al. 2011

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Using a 15.9 m baseline at the Navy Prototype Optical Interferometer (NPOI), we have successfully detected interferometric fringes in observations of the geosynchronous satellite (geosat) DirecTV-9S while it glinted on two nights in March 2009. The fringe visibilities can be fitted by a model consisting of two components, one resolved (≳3.7 m) and one unresolved (∼1.1 m). Both the length of the glint and the specular albedos are consistent with the notion that the glinting surfaces are not completely flat and scatter reflected sunlight into an opening angle of roughly 15°. Enhancements to the NPOI that would improve geosat observations include adding an infrared capability, which could extend the glint season, and adding larger, adaptive-optics equipped telescopes. Future work may test the feasibility of observing geosats with aperture-masked large telescopes and of developing an array of six to nine elements.

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The VLTI — A Status Report

Cited by 6 publications

References 4 publications

MIDI observations of 1459 Magnya: First attempt of interferometric observations of asteroids with the VLTI

MIDI observations of 1459 Magnya: First attempt of interferometric observations of asteroids with the VLTI

A far-field super-resolution imaging method based on phase constructive

Navy Prototype Optical Interferometer observations of geosynchronous satellites

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