Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Alan Schier"'
Autor:
Jacob Hohl, J. Samra, Peter Cheimets, Hans Moritz Günther, Randall K. Smith, Edward Hertz, Casey T. DeRoo, Alan Schier, Stephen Walker, Kristin K. Madsen
Publikováno v:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXII.
Arcus is an innovative MIDEX-class photon-counting X-ray spectroscopy mission. Due to the nature of the sources that Arcus will focus on, observations can be many tens of kiloseconds (ks) long. The resulting spectral images are reconstructed on the g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be7263e775d8a5fa471dd68e6fbce7b1
https://doi.org/10.1117/12.2594671
https://doi.org/10.1117/12.2594671
Autor:
David A. H. Buckley, Janus D. Brink, James Allington, Christian Hetlage, Encarni Romero-Colmenero, Petri Väisänen, Keith Browne, S. B. Potter, S. Crawford, Éric Depagne, Lisa A. Crause, Ken Nordsieck, Alan Schier, Anthony Koeslag
Publikováno v:
SPIE Proceedings.
The Robert Stobie Spectrograph is currently the main workhorse spectroscopic instrument on the Southern African Large Telescope (SALT), which has been undergoing regular scientific operations since 2011. The visible beam of the RSS was designed to pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5235384617a3970af5224c86ead96801
https://doi.org/10.1117/12.2232391
https://doi.org/10.1117/12.2232391
Autor:
J. Alan Schier, Martin Wilkinson, Éric Depagne, Darragh O'Donoghue, Lisa A. Crause, Janus D. Brink, Kenneth H. Nordsieck, Ockert J. Strydom, Wouter Lochner, Jonathan Love
Publikováno v:
SPIE Proceedings.
Liquid lens coupling provides excellent transmission efficiency when compared to multilayer coatings especially for applications where broadband transmission is required. However, long term reliability of liquid coupling is difficult to achieve. This
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5cc099144575c41147c97ea06e507cb
https://doi.org/10.1117/12.2232243
https://doi.org/10.1117/12.2232243
Autor:
Mark P. Mulligan, Curtis Bartosz, Kenneth H. Nordsieck, T. B. Williams, Kristine Garot, Gregory Mosby, Stephen A. Smee, Briana L. Indahl, J. Christopher Clemens, David A. H. Buckley, Jeffrey P. Wong, Donald J. Thielman, Harland W. Epps, Jeffrey W. Percival, William P. Mason, Marsha J. Wolf, Sujit Punnadi, Pravin Chordia, Mark W. Werner, Ron J. Koch, Douglas P. Adler, Matthew A. Bershady, Anamparambu N. Ramaprakash, Andrew I. Sheinis, Michael P. Smith, J. Alan Schier, Mahesh P. Burse, Kurt P. Jaehnig
Publikováno v:
SPIE Proceedings.
The Robert Stobie Spectrograph Near Infrared Instrument (RSS-NIR), a prime focus facility instrument for the 11-meter Southern African Large Telescope (SALT), is well into its laboratory integration and testing phase. RSS-NIR will initially provide i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1096a8c58cd91f34107393702c2728df
https://doi.org/10.1117/12.2056736
https://doi.org/10.1117/12.2056736
Publikováno v:
SPIE Proceedings.
We report on extensive laboratory testing of the optical compatibility of immersion fluids often used in astronomical instrumentation. A strong near-ultraviolet absorption feature is seen after incubating several fluids with polyurethane often used i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8af75b60dace67eb485c9be395f9b56e
https://doi.org/10.1117/12.858281
https://doi.org/10.1117/12.858281
Autor:
Kenneth H. Nordsieck, J. Alan Schier, T. B. Williams, Darragh O'Donohue, Michael P. Smith, James O'Connor, Jeffrey W. Percival, E. B. Burgh
Publikováno v:
SPIE Proceedings.
The Prime Focus Imaging Spectrograph (PFIS) is a first light instrument for the Southern African Large Telescope (SALT). PFIS is a versatile instrument designed to operate in a number of scientific modes by utilizing volume phase holographic gratings
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fcc8cb9521273a7aeeefc371c266bb3
https://doi.org/10.1117/12.672415
https://doi.org/10.1117/12.672415
Publikováno v:
SPIE Proceedings.
We describe a new telescope encoder that overcomes several traditional problems. The system uses a camera, a ruled scale, and a robust image processing algorithm to determine angular position. The ruled scale can be any of a variety of materials. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef5bd016ddd67ee73e60532c91efe7bb
https://doi.org/10.1117/12.176244
https://doi.org/10.1117/12.176244
Publikováno v:
Guidance, Navigation and Control Conference.
This paper reports on the results of a study effort whose main objective was to develop a conceptual design for a space based, large-payload (3000 kg) pointing system capable of both rapid slew maneuvers (0.35 rad/sec-squared) and very stable trackin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59f8b116780145b5c5179100a2e0122b
https://doi.org/10.2514/6.1988-4107
https://doi.org/10.2514/6.1988-4107
Conference
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