High Contrast Imaging in the Visible: First Experimental Results at the Large Binocular Telescope
Hill, J. M.
Hinz, P. M.
Sabatini, and L.
AffiliationUniv Arizona, LBTO
Univ Arizona, Steward Observ
Keywordsinstrumentation: adaptive optics
instrumentation: high angular resolution
planets and satellites: detection
techniques: image processing
MetadataShow full item record
PublisherIOP PUBLISHING LTD
CitationHigh Contrast Imaging in the Visible: First Experimental Results at the Large Binocular Telescope 2017, 154 (2):74 The Astronomical Journal
JournalThe Astronomical Journal
Rights© 2017. The American Astronomical Society. All rights reserved.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractIn 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 5 x 10(-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.
VersionFinal published version
SponsorsADONI; ADaptive Optics National laboratory of Italy