Zobrazeno 1 - 8
of 8
pro vyhledávání: '"George Gardopee"'
Autor:
George Gardopee, François Piché, Ralf Jedamzik, Martin Schaefer, John W. Pepi, Volker Seibert, Thomas Westerhoff, Antoine Leys, Tony Hull, Andrew R. Clarkson
Publikováno v:
SPIE Proceedings.
Previously we established that the combination of new machining parameters for openbacked monolithic lightweighted ZERODUR® mirror substrates, coupled with new methods for optical finishing of aggressively lightweighted mirrors, have relieved classi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8051014cbfa87e4a14d389d2e884bc3
https://doi.org/10.1117/12.926807
https://doi.org/10.1117/12.926807
Autor:
Volker Seibert, Armin Thomas, Thomas Werner, François Piché, Andrew R. Clarkson, George Gardopee, Thomas Westerhoff, Tony Hull, Antoine Leys, John W. Pepi, Ralf Jedamzik, Martin Schäfer
Publikováno v:
SPIE Proceedings.
Recent game-changing technology greatly extends the design possibilities and range of applications for aggressively lightweighted open-back Zerodur® mirrors. We have compared several lightweighting design approaches under this new technology. Analyt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d451f5077aa0709325a23af911fc00a
https://doi.org/10.1117/12.896571
https://doi.org/10.1117/12.896571
Autor:
George Gardopee, Pradeep Subrahmanyan
Publikováno v:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation.
Modern day telescopes for astronomy have very complex requirements. Both ground and space based telescopes are getting much larger placing significant productivity requirements on the manufacturing processes employed. Conventional manufacturing parad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efdd2595f5a5dad1adbf3e7e5c77856e
https://doi.org/10.1117/12.786991
https://doi.org/10.1117/12.786991
Publikováno v:
SPIE Proceedings.
Direct Sintered Silicon Carbide (SSiC) is a promising material to fabricate large (over 1 meter diameter) land and space based mirror optics due to its low areal density, high stiffness and high thermal stability. To make large mirror optics for visi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71f4399306eb1e1360918bea1d19dc5f
https://doi.org/10.1117/12.734406
https://doi.org/10.1117/12.734406
Autor:
Thomas Kyler, Ning Li, Tom Yu, Yogesh Verma, George Gardopee, Philip Sommer, Peter Fiske, Pradeep Subrahmanyan
Publikováno v:
SPIE Proceedings.
Polishing has traditionally been a process of mechanical abrasion with each iteration removing the damage from the previous iteration. Modern sub-aperture techniques such as CCOS, MRF polishing etc. have added a considerable amount of determinism to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bac32213c8949ea70e7cdf75fa1e81bc
https://doi.org/10.1117/12.733123
https://doi.org/10.1117/12.733123
Autor:
Jude Kelley, Nick Lyford, Phillip R. Sommer, Jeonghwa Lee, Yogesh Verma, Thomas Kyler, John W. Berrett, David Proscia, George Gardopee, Andrew Chang, Kenneth Futtere
Publikováno v:
SPIE Proceedings.
Mechanical grinding and shaping of optical materials imparts damage that manifests itself as defects and cracks that can propagate well below the surface of the optic. Mitigation of damage is necessary to preserve the integrity of the optic and relie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef46b6453d206c2ac1e560cd298796ba
https://doi.org/10.1117/12.671969
https://doi.org/10.1117/12.671969
Autor:
Tom Kyler, Andrew Chang, Nick Lyford, Kurt Pang, Yogesh Verma, Peter Fiske, John W. Berrett, Jude Kelley, George Gardopee, Phil Sommer, Ning Li
Publikováno v:
Frontiers in Optics.
Reactive Atom Plasma (RAP) is a plasma-based tool for rapid damage-free shaping of optical surfaces. We discuss our success rapidly shaping and finishing advanced lightweight SiC mirrors using an integrated manufacturing process that includes RAP.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::429b9ba8feb8ad3bcdb741e732a5d60f
https://doi.org/10.1364/oft.2006.ofmb1
https://doi.org/10.1364/oft.2006.ofmb1
Autor:
Robert L. Fink, George Gardopee
Publikováno v:
Optical Society of America Annual Meeting.
The high-performance, lightweight Be mirrors for use on space systems that will be operational in the 21st century are being conceived, designed, and prototyped now. This paper explains the integrated set of processes, techniques, and technologies in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df9b2ad13663fd8bf0ab424d9218e177
https://doi.org/10.1364/oam.1990.thss1
https://doi.org/10.1364/oam.1990.thss1