High contrast imaging in the visible: First experimental results at the large binocular telescope

F. Pedichini; M. Stangalini; F. Ambrosino; A. Puglisi; E. Pinna; V. Bailey; L. Carbonaro; M. Centrone; J. Christou; S. Esposito; J. Farinato; F. Fiore; E. Giallongo; J. M. Hill; P. M. Hinz; And L. Sabatini

doi:10.3847/1538-3881/aa7ff3

High contrast imaging in the visible: First experimental results at the large binocular telescope

F. Pedichini, M. Stangalini, F. Ambrosino, A. Puglisi, E. Pinna, V. Bailey, L. Carbonaro, M. Centrone, J. Christou, S. Esposito, J. Farinato, F. Fiore, E. Giallongo, J. M. Hill, P. M. Hinz, And L. Sabatini

Astronomy

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

In 2014 February, the System for High contrast And coronography from R to K at VISual bands (SHARK-VIS) Forerunner, a high contrast experimental imager operating at visible wavelengths, was installed at the Large Binocular Telescope (LBT). Here we report on the first results obtained by recent on-sky tests. These results show the extremely good performance of the LBT Extreme Adaptive Optics (ExAO) system at visible wavelengths, both in terms of spatial resolution and contrast achieved. Similarly to what was done by Amara & Quanz (2012), we used the SHARK-VIS Forerunner data to quantitatively assess the contrast enhancement. This is done by injecting several different synthetic faint objects in the acquired data and applying the angular differential imaging (ADI) technique. A contrast of the order of 510^-5 is obtained at 630 nm for angular separations from the star larger than 100 mas. These results are discussed in light of the future development of SHARK-VIS and compared to those obtained by other high contrast imagers operating at similar wavelengths.

Original language	English (US)
Article number	74
Journal	Astronomical Journal
Volume	154
Issue number	2
DOIs	https://doi.org/10.3847/1538-3881/aa7ff3
State	Published - Aug 2017

Keywords

adaptive optics instrumentation
detection techniques
high angular resolution planets and satellites
image processing
instrumentation

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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Pedichini, F., Stangalini, M., Ambrosino, F., Puglisi, A., Pinna, E., Bailey, V., Carbonaro, L., Centrone, M., Christou, J., Esposito, S., Farinato, J., Fiore, F., Giallongo, E., Hill, J. M., Hinz, P. M., & Sabatini, A. L. (2017). High contrast imaging in the visible: First experimental results at the large binocular telescope. Astronomical Journal, 154(2), [74]. https://doi.org/10.3847/1538-3881/aa7ff3

High contrast imaging in the visible : First experimental results at the large binocular telescope. / Pedichini, F.; Stangalini, M.; Ambrosino, F.; Puglisi, A.; Pinna, E.; Bailey, V.; Carbonaro, L.; Centrone, M.; Christou, J.; Esposito, S.; Farinato, J.; Fiore, F.; Giallongo, E.; Hill, J. M.; Hinz, P. M.; Sabatini, And L.

In: Astronomical Journal, Vol. 154, No. 2, 74, 08.2017.

Research output: Contribution to journal › Article › peer-review

Pedichini, F, Stangalini, M, Ambrosino, F, Puglisi, A, Pinna, E, Bailey, V, Carbonaro, L, Centrone, M, Christou, J, Esposito, S, Farinato, J, Fiore, F, Giallongo, E, Hill, JM, Hinz, PM & Sabatini, AL 2017, 'High contrast imaging in the visible: First experimental results at the large binocular telescope', Astronomical Journal, vol. 154, no. 2, 74. https://doi.org/10.3847/1538-3881/aa7ff3

Pedichini, F. ; Stangalini, M. ; Ambrosino, F. ; Puglisi, A. ; Pinna, E. ; Bailey, V. ; Carbonaro, L. ; Centrone, M. ; Christou, J. ; Esposito, S. ; Farinato, J. ; Fiore, F. ; Giallongo, E. ; Hill, J. M. ; Hinz, P. M. ; Sabatini, And L. / High contrast imaging in the visible : First experimental results at the large binocular telescope. In: Astronomical Journal. 2017 ; Vol. 154, No. 2.

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abstract = "In 2014 February, the System for High contrast And coronography from R to K at VISual bands (SHARK-VIS) Forerunner, a high contrast experimental imager operating at visible wavelengths, was installed at the Large Binocular Telescope (LBT). Here we report on the first results obtained by recent on-sky tests. These results show the extremely good performance of the LBT Extreme Adaptive Optics (ExAO) system at visible wavelengths, both in terms of spatial resolution and contrast achieved. Similarly to what was done by Amara & Quanz (2012), we used the SHARK-VIS Forerunner data to quantitatively assess the contrast enhancement. This is done by injecting several different synthetic faint objects in the acquired data and applying the angular differential imaging (ADI) technique. A contrast of the order of 510-5 is obtained at 630 nm for angular separations from the star larger than 100 mas. These results are discussed in light of the future development of SHARK-VIS and compared to those obtained by other high contrast imagers operating at similar wavelengths.",

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