Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Timothy J. Madison"'
Autor:
D. Brent Mott, Robert J. Hill, Randy A. Kimble, Roger Foltz, Pamela S. Davila, Scott Antonille, Jeffrey S. Gum, Bernard J. Rauscher, Augustyn Waczynski, Matthew A. Greenhouse, Timothy J. Madison, Nicholas Boehm, Raymond G. Ohl, Don J. Lindler
Publikováno v:
Publications of the Astronomical Society of the Pacific. 125:1465-1473
We describe the "overlight" test that was done for JWST's Teledyne H2RG HgCdTe near-infrared detector arrays. We projected many very bright λ = 632.8 nm spots onto one flight representative, substrate-removed, HgCdTe 5 μm cutoff detector array. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96e0087d0a205e5d2395c3271a9f7dcb
https://doi.org/10.1086/674176
https://doi.org/10.1086/674176
Autor:
Raymond G. Ohl, Philip Coulter, Jerrod Young, Timothy J. Madison, Manal Khreishi, Kyle F. Mclean, Joseph E. Hayden, Theodore Hadjimichael, Linda A. Miner, Kevin Redman, Jeffrey S. Gum, Greg Wenzel, Jason E. Hylan
Publikováno v:
2015 IEEE Aerospace Conference.
The final, flight build of the Integrated Science Instrument Module (ISIM) element of the James Webb Space Telescope is the culmination of years of work across many disciplines and partners. This paper covers the large volume, ambient, optical and op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40d329d77280572ab0d99b6e2a43f409
https://doi.org/10.1109/aero.2015.7119318
https://doi.org/10.1109/aero.2015.7119318
Autor:
Susann Hummel, Andreas Roedel, Jason E. Hylan, Theodore Hadjimichael, Greg W. Wenzel, Maurice te Plate, Paul F. Schweiger, Joseph McMann, Markus Melf, Timothy J. Madison, Raymond G. Ohl, Jeffery S. Gum, Martyn Wells, Patrick Williams, Kevin W. Redman, Michael Maszkiewicz, David Lee, Alexander Beaton, Joseph E. Hayden, Phillip Coulter, Jerrod Young, Linda A. Miner, Kyle F. Mclean
Publikováno v:
Optical System Alignment, Tolerancing, and Verification VIII.
The James Webb Space Telescope science instruments are in the final stages of being integrated into the Integrated Science Instrument Module (ISIM) element. Each instrument is tied into a common coordinate system through mechanical references that ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e3159b322ad9d712e0bac5a5903958d
https://doi.org/10.1117/12.2065017
https://doi.org/10.1117/12.2065017
Autor:
Udayan Mallik, Timothy J. Madison, Peter Petrone, Mark Clampin, Richard G. Lyon, Matthew R. Bolcar
Publikováno v:
Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave.
Herein we report on our Visible Nulling Coronagraph high-contrast result of 109 contrast averaged over a focal planeregion extending from 14 D with the Vacuum Nuller Testbed (VNT) in a vibration isolated vacuum chamber. TheVNC is a hybrid interferome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::507a42d94e6c53daecb62d68de9d0413
https://doi.org/10.1117/12.926889
https://doi.org/10.1117/12.926889
Autor:
Timothy J. Madison, Matthew R. Bolcar, Richard G. Lyon, Stephen E. Kendrick, Udayan Mallik, Michael A. Helmbrecht, M. Charley Noecker, Peter Petrone, Mark Clampin
Publikováno v:
SPIE Proceedings.
Herein we report on the development. sensing and control and our first results with the Vacuum Nuller Testbed to realize a Visible Nulling Coronagraph (VNC) for exoplanet coronagraphy. The VNC is one of the few approaches that works with filled. segm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f13b12df5d404eb5c127927f829f3ac
https://doi.org/10.1117/12.894531
https://doi.org/10.1117/12.894531
Autor:
M. Charley Noecker, Matthew R. Bolcar, Robert A. Woodruff, Richard G. Lyon, Volker Tolls, Stephen E. Kendrick, A. Booth, Timothy J. Madison, Gopal Vasudevan, Gary J. Melnick, Mark Clampin, Andrew Chen, Patrick L. Thompson, Peter Petrone
Publikováno v:
SPIE Proceedings.
Three of the recently completed NASA Astrophysics Strategic Mission Concept (ASMC) studies addressed the feasibility of using a Visible Nulling Coronagraph (VNC) as the prime instrument for exoplanet science. The VNC approach is one of the few approa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ca1404ca59a37f1d15d17943f1fbf39
https://doi.org/10.1117/12.857472
https://doi.org/10.1117/12.857472
Publikováno v:
SPIE Proceedings.
This paper summarizes a comparison of pre- and post-flight optical performance on optical components (mostly mirrors) from the Corrective Optics Space Telescope Axial Replacement (COSTAR) instrument and the Wide Field Planetary Camera 2 (WF/PC 2) pic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0231533edbc86502b215d4da4dcb86a0
https://doi.org/10.1117/12.858072
https://doi.org/10.1117/12.858072
Publikováno v:
SPIE Proceedings.
In order to enable high quality lens designs using calcium fluoride (CaF2) and Heraeus Infrasil 301 (Infrasil) for cryogenic operating temperatures, we have measured the absolute refractive index of these two materials as a function of both wavelengt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79644b37aba500589576e590e0a1f09d
https://doi.org/10.1117/12.735594
https://doi.org/10.1117/12.735594
Publikováno v:
SPIE Proceedings.
In order to enable high quality lens designs using N-BK7, BaLKN3, SF15, and E-SF03 at cryogenic temperatures, we have measured the absolute refractive index of prisms of these four materials using the Cryogenic, High-Accuracy Refraction Measuring Sys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5976cac33943a9e4ab29099f6fd24a5e
https://doi.org/10.1117/12.735598
https://doi.org/10.1117/12.735598
Silicon and germanium are perhaps the two most well-understood semiconductor materials in the context of solid state device technologies and more recently micromachining and nanotechnology. Meanwhile, these two materials are also important in the fie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be488025e4ac61c1945d9671cfb89d64
