Results 21 to 30 of about 1,371,529 (165)
Two‐Mirror Apodization for High‐Contrast Imaging [PDF]
The Astrophysical Journal, 2003 21 pages, 7 figures. For author's webpage version see http://www.orfe.princeton.edu/~rvdb/tex/piaa/ms.pdf This version has improved figures and addresses comments of a ...
Traub, Wesley A., Vanderbei, Robert J.
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Spiderweb Masks for High‐Contrast Imaging
The Astrophysical Journal, 2003 Motivated by the desire to image exosolar planets, recent work by us and others has shown that high-contrast imaging can be achieved using specially shaped pupil masks. To date, the masks we have designed have been symmetric with respect to a cartesian coordinate system but were not rotationally invariant, thus requiring that one take multiple images ...
Vanderbei, Robert J. +2 more
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First Observations of the Brown Dwarf HD 19467 B with JWST
The 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
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Two methods for display of high contrast images [PDF]
ACM Transactions on Graphics, 1999 High contrast images are common in night scenes and other scenes that include dark shadows and bright light sources. These scenes are difficult to display because their contrasts greatly exceed the range of most display devices for images. As a result, the image constrasts are compressed or truncated, obscuring subtle textures and details. Humans view
Jack Tumblin +2 more
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iRADIOLOGY, 2023 Stabilized microbubbles were commercialized over 30 years ago for use as contrast agents in ultrasound imaging. In recent years, interest in microbubble–acoustic interactions has expanded to applications not only in ultrasound imaging but also in drug ...
Adriano Bellotti
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Ultraviolet photoacoustic microscopy with tissue clearing for high-contrast histological imaging
Photoacoustics, 2022 Ultraviolet photoacoustic microscopy (UV-PAM) has been investigated to provide label-free and registration-free volumetric histological images for whole organs, offering new insights into complex biological organs.
Xiufeng Li +10 more
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The ZIMPOL high contrast imaging polarimeter for SPHERE: polarimetric high contrast commissioning results [PDF]
SPIE Proceedings, 2016 SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research) is a second generation VLT instrument aimed at the direct detection of exo-planets. It has received its first light in May 2014. ZIMPOL (Zurich Imaging Polarimeter) is the imaging polarimeter subsystem of the SPHERE instrument.
Roelfsema, R. +23 more
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Photonics, 2017 Photothermal microscopy is useful to visualize the distribution of non-fluorescence chromoproteins in biological specimens. Here, we developed a high sensitivity and high resolution photothermal microscopy with low-cost and compact laser diodes as light ...
Jun Miyazaki, Takayoshi Kobayahsi
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High-contrast phase imaging based on nonlinear holographic hot image model
AIP Advances, 2022 Imaging for weak-phase objects is a challenging issue in the linear imaging process. Here, we demonstrate a high-contrast phase imaging method based on a nonlinear holographic hot image model.
Hongchang Wang +4 more
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Imaging exoplanets with coronagraphic instruments
Comptes Rendus. Physique, 2023 Exoplanetary science is a very active field of astronomy nowadays, with questions still opened such as how planetary systems form and evolve (occurrence, process), why such a diversity of exoplanets is observed (mass, radius, orbital parameters ...
Galicher, Raphaël, Mazoyer, Johan
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