Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Ryan Allured"'
Autor:
Ryan Allured, Jonathan B. Ashcom
Publikováno v:
Applied optics. 60(22)
Chromatic dispersion is a well-known technical challenge in optical interferometry, and the issue is exacerbated when using optical fibers for beam transport. The important sources of chromatic dispersion in a fiber-coupled optical interferometer are
Publikováno v:
Optical and Infrared Interferometry and Imaging VII.
The isopistonic angle is the angle over which the atmospheric piston can be considered constant. It is an important parameter for ground based optical interferometry, particularly in the context of phasing using guide stars. This angle is analogous t
Autor:
Jonathan B. Ashcom, Ryan Allured
Publikováno v:
Optical Engineering. 59
Pupil densification is a technique to improve contrast in a direct imaging interferometer. By enlarging the size of each aperture in a sparse array, the fraction of energy contained in the central point spread function peak can be increased. However,
Publikováno v:
Applied Optics. 60:4723
Adaptive optics (AO) compensation for imaging or coherent illumination of a remote object relies on accurate sensing of atmospheric aberrations. When a coherent beacon is projected onto the object to enable wavefront sensing, the reflected reference
Autor:
Casey T. DeRoo, Jeffery J. Kolodziejczak, James H. Tutt, Randall L. McEntaffer, Benjamin D. Donovan, Ryan Allured, Jessica A. Gaskin
Publikováno v:
Applied optics. 57(3)
Off-plane x-ray reflection gratings are theoretically capable of achieving high resolution and high diffraction efficiencies over the soft x-ray bandpass, making them an ideal technology to implement on upcoming x-ray spectroscopy missions. To achiev
Autor:
Ryan Allured, Kenneth L. Gurski, Casey T. DeRoo, Paul B. Reid, Vanessa Marquez, Vincenzo Cotroneo, Eric D. Schwartz
Publikováno v:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII.
The proposed Lynx telescope is an X-ray observatory with Chandra-like angular resolution and about 30 times larger effective area. The technology under development at SAO is based on the deposition of piezoelectric material on the back of glass subst
Autor:
Mitchell A. Rodriguez, Tyrone M. Boswell, William W. Zhang, Feryal Özel, A. Falcone, Wonsik Yoon, Randall C. Hopkins, Kai Wing Chan, Julian Walker, Ralf K. Heilmann, Jay Garcia, Ryan Allured, Justin W. Rowe, Simon R. Bandler, Peter M. Solly, John A. Mulqueen, Steven Sutherlin, Marta Civitani, Karen Gelmis, Michael Baysinger, Leo L. Fabisinski, Andrew Schnell, Mark L. Schattenburg, Raul E. Riveros, Marshall W. Bautz, Thomas N. Jackson, Peter Capizzo, Daniel A. Schwartz, Lester M. Cohen, Michael J. Dipirro, P. Reid, Kiranmayee Kilaru, Douglas A. Swartz, Kevin S. McCarley, Vincenzo Cotroneo, Tianning Liu, A. Domínguez, Jessica A. Gaskin, Robert M. Suggs, Timo T. Saha, James H. Tutt, S. Basso, R. S. McClelland, Giovanni Pareschi, Susan Trolier-McKinstry, Alexey Vikhlinin, Randy L. McEntaffer, Michael P. Biskach, Jacqueline M. Davis, R. P. Kraft, Enectali Figueroa-Feliciano, Casey T. DeRoo
Publikováno v:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX.
Lynx is a concept under study for prioritization in the 2020 Astrophysics Decadal Survey. Providing orders of magnitude increase in sensitivity over Chandra, Lynx will examine the first black holes and their galaxies, map the large-scale structure an
Autor:
Brian D. Ramsey, Amy R. Winebarger, Ralf K. Heilmann, Mark L. Schattenburg, Alexander R. Bruccoleri, Jaganathan Ranganathan, Vanessa Marquez, Ryan Allured, Patrick Champey, Peter Cheimets, Theodore Parker, Edward Hertz, Ken Kobayashi, Sabrina Savage, Leon Golub
Publikováno v:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX.
The Marshall Grazing Incidence X-ray Spectrometer (MaGIXS) is a NASA sounding rocket instrument designed to obtain spatially resolved soft X-ray spectra of the solar atmosphere in the 6–24 A (0.5–2.0 keV) range. The instrument consists of a singl
Autor:
Paul B. Reid, Thomas N. Jackson, Eric D. Schwartz, Ryan Allured, Susan Trolier-McKinstry, Casey T. DeRoo, Tianning Liu, Mohit Tendulkar, Vincenzo Cotroneo, Edward Hertz, David N. Burrows, Julian Walker
Publikováno v:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII.
Piezoelectric adjustable optics are being developed for high throughput, high resolution, low mass Xray mirror assemblies. These optics require robust piezoelectric thin films and reproducible lithographic patterning on curved glass substrates. This