GRAVITY: a four-telescope beam combiner instrument for the VLTI

Gillessen, S.; Eisenhauer, F.; Perrin, Guillaume; Brandner, W.; Straubmeier, C.; Perraut, K.; Amorim, A.; Schöller, M.; Araujo-Hauck, Constanza; Bartko, H.; Baumeister, Harald; Berger, J.‐P.; Carvas, Pedro; Cassaing, F.; Chapron, F.; Choquet, Élodie; Clénet, Y.; Collin, C.; Eckart, A.; Fédou, P.; Fischer, Sebastian; Gendron, É.; Genzel, R.; Gitton, Ph.; Gonté, Frederic; Gräter, A.; Haguenauer, Pierre; Haug, M.; Haubois, X.; Henning, Th.; Hippler, S.; Hofmann, R.; Jocou, L.; Kellner, S.; Kervella, P.; Klein, Ralf; Kudryavtseva, N.; Lacour, S.; Lapeyrère, V.; Laun, W.; Léna, Pierre; Lenzen, R.; Lima, Jorge; Moratschke, Damian; Moch, D.; Moulin, T.; Naranjo, V.; Neumann, Udo; Nolot, A.; Paumard, T.; Pfuhl, O.; Rabien, S.; Ramos, J.; Rees, Jon M.; Rohloff, R.-R.; Rouan, D.; Rousset, G.; Sevin, Arnaud; Thiel, Markus; Wagner, K.; Wiest, Michael; Yazici, S.; Ziegler, D.

doi:10.1117/12.856689

Cited by 45 publications

(26 citation statements)

References 25 publications

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“…Δν v Instead of computing the visibility data via a Fourier transform on the image data as in (4), the modeled visibility data in (12) are acquired in a more efficient way. Figure 3 shows the schematic of phase recovery, in which the phase of additional visibility data is derived by using the phase-closure data.…”

Section: Proposed Vp-oii Methodsmentioning

confidence: 99%

“…Optical interferometric data were collected with polychromatic instruments like PIONEER [10], VEGA [11] and GRAVITY [12]. A polychromatic optical interferometric reconstruction software (PAINTER), which is a spatiospectral image reconstruction algorithm, was proposed to alternately adjust the polychromatic images and their complex differential phases [13].…”

Section: Introductionmentioning

confidence: 99%

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A Visibility-Domain Reconstruction Technique for Optical Interferometry Imaging

Kiang¹

2017

PIER M

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Abstract-A visibility-domain processing for optical interferometric imaging (VP-OII) method is proposed to model the visibility distribution of an image, and a phase recovery technique is proposed to acquire additional visibility data from the powerspectrum and closure-phase data. This method requires only a few tunable parameters, and can be easily extended to include more data acquired from different instruments. By simulating the reconstruction of an LkHα 101 image, the proposed method proves a few hundreds times faster and is more resilient to noise than the conventional MIRA.

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Section: Proposed Vp-oii Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Visibility-Domain Reconstruction Technique for Optical Interferometry Imaging

Kiang¹

2017

PIER M

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“…GRAVITY (Gillessen et al, 2010) is a second generation instrument for the VLTI. It has been designed specifically to observe highly relativistic motions of matter close to the Galactic Center where a massive black hole gravity reigns.…”

Section: Vlti/gravitymentioning

confidence: 99%

Circumstellar disks and planets

Wolf

Malbet

Alexander

et al. 2012

Astron Astrophys Rev

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We present a review of the interplay between the evolution of circumstellar disks and the formation of planets, both from the perspective of theoretical models and dedicated observations. Based on this, we identify and discuss fundamental questions concerning the formation and evolution of circumstellar disks and planets which can be addressed in the near future with optical and infrared long-baseline interferometers. Furthermore, the importance of complementary observations with long-baseline (sub)millimeter interferometers and high-sensitivity infrared observatories is outlined.

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“…2 The new instrument will use a C-RED One 3 camera (First Light Imaging) based on the SELEX-SAPHIRA 4 chip. We expect "first light" in 2019.…”

Section: Introductionmentioning

confidence: 99%

MYSTIC: Michigan Young STar Imager at CHARA

Bouquin

Anugu

Kraus

et al. 2018

Optical and Infrared Interferometry and Imaging VI

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We present the design for MYSTIC, the Michigan Young STar Imager at CHARA. MYSTIC will be a K-band, cryogenic, 6-beam combiner for the Georgia State University CHARA telescope array. The design follows the image-plane combination scheme of the MIRC instrument where single-mode fibers bring starlight into a nonredundant fringe pattern to feed a spectrograph. Beams will be injected in polarization-maintaining fibers outside the cryogenic dewar and then be transported through a vacuum feedthrough into the ∼220K cold volume where combination is achieved and the light is dispersed. We will use a C-RED One camera (First Light Imaging) based on the eAPD SAPHIRA detector to allow for near-photon-counting performance. We also intend to support a 4-telescope mode using a leftover integrated optics component designed for the VLTI-GRAVITY experiment, allowing better sensitivity for the faintest targets. Our primary science driver motivation is to image disks around young stars in order to better understand planet formation and how forming planets might influence disk structures.

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GRAVITY: a four-telescope beam combiner instrument for the VLTI

Cited by 45 publications

References 25 publications

A Visibility-Domain Reconstruction Technique for Optical Interferometry Imaging

A Visibility-Domain Reconstruction Technique for Optical Interferometry Imaging

Circumstellar disks and planets

MYSTIC: Michigan Young STar Imager at CHARA

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