Results 1 to 10 of about 1,420,424 (313)

High-contrast Coronagraphic Techniques

open access: yesEAS Publications Series, 2010
The direct detection of very faint companions to bright stars requires the development of effective high-contrast detection techniques, and the past decade has seen remarkable conceptual and instrumental progress in this area. New coronagraphic and interferometric techniques are regularly being deployed for on-sky tests and observations, and extreme ...
E. Serabyn
openaire   +2 more sources

Temporal contrast reduction techniques for high dynamic-range single-shot temporal contrast measurement

open access: yes, 2019
29 pages, 7 ...
Shen, Xiong   +6 more
openaire   +3 more sources

Diffraction-based techniques for high contrast x-ray imaging

open access: yes, 2014
Two X-ray diffraction based techniques for high contrast were explored to improve contrast in radiology: diffraction enhanced imaging (DEI) and coherent scatter ...
Peerzada, Lubna Naseem
openaire   +3 more sources

Future Exoplanet Research: High-Contrast Imaging Techniques

open access: yes, 2017
High-contrast imaging (HCI) techniques appear like the best solutions to directly characterize large orbit planets and planetary environments in the future. The first dedicated scientific instruments like SPHERE on VLT and GPI on Gemini South have only been commissioned in 2013-2014.
Pierre Baudoz, Baudoz, Pierre
openaire   +4 more sources

Emerging optical nanoscopy techniques

open access: yesNanotechnology, Science and Applications, 2015
Paul C Montgomery, Audrey Leong-Hoi Laboratoire des Sciences de l'Ingénieur, de l'Informatique et de l'Imagerie (ICube), Unistra-CNRS, Strasbourg, France Abstract: To face the challenges of modern health care, new imaging techniques ...
Montgomery PC, Leong-Hoi A
doaj   +2 more sources

First Observations of the Brown Dwarf HD 19467 B with JWST

open access: yesThe Astrophysical Journal, 2023
We observed HD 19467 B with JWST’s NIRCam in six filters spanning 2.5–4.6 μ m with the long-wavelength bar coronagraph. The brown dwarf HD 19467 B was initially identified through a long-period trend in the radial velocity of the G3V star HD 19467.
Alexandra Z. Greenbaum   +23 more
doaj   +1 more source

Frame combination techniques for ultra-high-contrast imaging [PDF]

open access: yesSPIE Proceedings, 2008
9 pages, 4 figures, SPIE conference ...
Carson, Joseph C.   +6 more
openaire   +2 more sources

Data-reduction techniques for high-contrast imaging polarimetry [PDF]

open access: yesAstronomy & Astrophysics, 2011
9 pages, 12 Figures, Accepted for publication in A& ...
Canovas Cabrera, H.   +4 more
openaire   +3 more sources

Detecting Exoplanets Closer to Stars with Moderate Spectral Resolution Integral-field Spectroscopy

open access: yesThe Astronomical Journal, 2023
While radial velocity surveys have demonstrated that the population of gas giants peaks around 3 au, the most recent high-contrast imaging surveys have only been sensitive to planets beyond ∼10 au.
Shubh Agrawal   +12 more
doaj   +1 more source

Angular Differential Imaging: A Powerful High‐Contrast Imaging Technique [PDF]

open access: yesThe Astrophysical Journal, 2006
Angular differential imaging is a high-contrast imaging technique that reduces quasi-static speckle noise and facilitates the detection of nearby companions. A sequence of images is acquired with an altitude/azimuth telescope while the instrument field derotator is switched off.
Marois, C   +4 more
openaire   +2 more sources

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