Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Norbert Sigrist"'
Autor:
Scott A. Basinger, Siddarayappa Bikkannavar, Fang Shi, Norbert Sigrist, Hong Tang, Oliver P. Lay, Xu Wang, Byoung-Joon Seo
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation.
Large aperture telescope commonly features segment mirrors and a coarse phasing step is needed to bring these individual segments into the fine phasing capture range. Dispersed Fringe Sensing (DFS) is a powerful coarse phasing technique and its alter
Autor:
Mitchell Troy, Myung Cho, Chris Shelton, Byoung-Joon Seo, Mark J. Sirota, George Z. Angeli, Norbert Sigrist, Carl Nissly
We evaluate how well the performance of the Thirty Meter Telescope (TMT) can be maintained against thermally induced errors during a night of observation. We first demonstrate that using look-up-table style correction for TMT thermal errors is unlike
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf9d9fbd7d4c7c18cdb609441a0ec0a7
https://resolver.caltech.edu/CaltechAUTHORS:20161031-083213017
https://resolver.caltech.edu/CaltechAUTHORS:20161031-083213017
Autor:
Daniel J. Hoppe, Fang Shi, Siddarayappa Bikkannavar, Byoung-Joon Seo, Norbert Sigrist, Joshua A. Spechler
Publikováno v:
SPIE Proceedings.
Dispersed Fringe Sensing (DFS) is an elegant method of coarse phasing segmented mirrors. DFS performance accuracy is dependent upon careful calibration of the system as well as other factors such as internal optical alignment, system wavefront errors
Autor:
Byoung-Joon Seo, George Z. Angeli, Brent Ellerbroek, Norbert Sigrist, Mitchell Troy, Carl Nissly, Jerry Nelson
We investigate a new metric, the normalized point source sensitivity (PSSN), for characterizing the seeing-limited performance of large telescopes. As the PSSN metric is directly related to the photometric error of background limited observations, it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89179c748e4b88f669aa4d2de2bcf086
https://resolver.caltech.edu/CaltechAUTHORS:20091120-115655275
https://resolver.caltech.edu/CaltechAUTHORS:20091120-115655275
Autor:
Byoung-Joon Seo, Ian J. M. Crossfield, Brent Ellerbroek, L. Gilles, Norbert Sigrist, Mitchell Troy, George Z. Angeli, John Angione, Carl Nissly
Publikováno v:
SPIE Proceedings.
We consider high-resolution optical modeling of the Thirty Meter Telescope for the purpose of error budget and instrumentation trades utilizing the Modeling and Analysis for Controlled Optical Systems tool. Using this ray-trace and diffraction model
Publikováno v:
Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter.
An effective multi-field wavefront control (WFC) approach is demonstrated for an actuated, segmented space telescope using wavefront measurements at the exit pupil, and the optical and computational implications of this approach are discussed. The in
Autor:
Norbert Sigrist, Byoung-Joon Seo, George Z. Angeli, Mitchell Troy, Brent Ellerbroek, Carl Nissly, Jerry Nelson
Publikováno v:
SPIE Proceedings.
We investigate a new metric, Normalized Point Source Sensitivity (PSSN), for characterizing the seeing limited performance of the Thirty Meter Telescope. As the PSSN metric is directly related to the photometric error of background limited observatio
Publikováno v:
Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter.
The baseline wavefront sensing and control for James Webb Space Telescope (JWST) includes the Dispersed Hartmann Sensors (DHS) for segment mirror coarse phasing. The two DHS devices, residing on the pupil wheel of the JWST's Near Infrared Camera (NIR
Publikováno v:
SPIE Proceedings.
Optical State Estimation provides a framework for both separating errors in test optics from the target system and deducing the state of multiple optics in a telescope beam train using wavefront as well as pre-test component measurements including th
Publikováno v:
SPIE Proceedings.
An effective multi-field wavefront control (WFC) approach is demonstrated for the James Webb Space Telescope (JWST) on-orbit optical telescope element (OTE) fine-phasing using wavefront measurements at the NIRCam pupil, and the optical and computatio