Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Matthew Cheselka"'
Publikováno v:
Publications of the Astronomical Society of the Pacific. 111:1577-1585
Laser beams directed into the sky from astronomical observatories to generate guide beacons for adaptive optics image-sharpening systems are a potential hazard to aircraft. Detection systems are needed to sense aircraft and interrupt the laser beam t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fd86204cc8e2b46633fff970c9c9afa
https://doi.org/10.1086/316476
https://doi.org/10.1086/316476
Autor:
Richard Dekany, Hal L. Petrie, Gary L. Brack, Edward J. Kibblewhite, Matthew Cheselka, V. Velur, Robert P. Thicksten, Mitchell Troy, Thang Trin
Work is underway at the University of Chicago and Caltech Optical Observatories to implement a sodium laser guide star adaptive optics system for the 200 inch Hale telescope at Palomar Observatory. The Chicago sum frequency laser (CSFL) consists of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bb891d6ac9ff5c16e1b123ce6816f1e
https://resolver.caltech.edu/CaltechAUTHORS:20190118-125400754
https://resolver.caltech.edu/CaltechAUTHORS:20190118-125400754
Autor:
Donald W. McCarthy, David G. Sandler, James Roger P. Angel, Michael Lloyd-Hart, Stephen M. Miller, Patrick C. McGuire, Donald G. Bruns, Matthew Cheselka, Troy A. Rhoadarmer, Todd K. Barrett
Publikováno v:
SPIE Proceedings.
The Multiple Mirror Telescope (MMT) is now being replaced by a single 6.5m telescope which will have an integral adaptive optics system optimized for near IR operation. We illustrate key results obtained with low-order adaptive optics at the MMT and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01d59911e4c2a20592f3869adfdad136
https://doi.org/10.1117/12.321743
https://doi.org/10.1117/12.321743
Autor:
William F. Hoffmann, Neville J. Woolf, Donald W. McCarthy, Joseph L. Hora, James Roger P. Angel, Patrick C. McGuire, Matthew Cheselka, Philip M. Hinz
Publikováno v:
Astronomical Interferometry.
We have successfully used nulling interferometry at 10 μm wavelength to interferometrically suppress a star's radiation. This technique was first proposed by Bracewell 20 years ago to image extra-solar planets and is now the basis for proposed space
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0a6b8401f0662ae7acc9bd2ca471f1b
https://doi.org/10.1117/12.317108
https://doi.org/10.1117/12.317108
Autor:
John M. Hughes, Matthew Cheselka, Guido Brusa-Zappellini, David Wittman, Donald G. Bruns, Bruce P. Jacobsen, Brian McLeod, Patrick T. Ryan, Donald W. McCarthy, Michael Lloyd-Hart, Laird M. Close, Mark R. Hunten, Ty Martinez, Todd D. Groesbeck, David G. Sandler, Peter M. Gray, James Roger P. Angel
Publikováno v:
SPIE Proceedings.
A new adaptive optics system has been constructed for moderately high resolution in the near infrared at the Multiple Mirror Telescope (MMT). The system, called FASTTRAC II, has been designed to combine the highest throughput with the lowest possible
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4635b4c9dcb585e7dfd2575fc19de591
https://doi.org/10.1117/12.217726
https://doi.org/10.1117/12.217726
Publikováno v:
SPIE Proceedings.
The large binocular telescope (LBT) will have two 8.4 m apertures spaced 14.4 m from center to center. Adaptive optics will be used to recover deep, long exposure diffraction-limited images in the infrared. The LBT configuration has a diffraction-lim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7fa0b5438c04f385e6754ae0c63bbf1
https://doi.org/10.1117/12.217369
https://doi.org/10.1117/12.217369
Publikováno v:
Amplitude and Intensity Spatial Interferometry II.
Traditional differential astrometric techniques are limited in precision by the atmosphere in a way that does not show much improvement with increased telescope aperture. However, greatly improved astrometric precision may be obtainable by exploiting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7bc467b0147e6d1fde15c8939b82028
https://doi.org/10.1117/12.177259
https://doi.org/10.1117/12.177259
Autor:
Matthew Cheselka, E. Keith Hege
Publikováno v:
SPIE Proceedings.
A laser interferometer has been used to measure the relative optical pathlength variations from the focal plane to the six individual secondary telescopes of the Multiple Mirror Telescope (MMT). These pathlengths vary as functions of elevation due to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0470040b28b27d76dc72fef2f0515ae
https://doi.org/10.1117/12.19331
https://doi.org/10.1117/12.19331
Publikováno v:
Journal of the Optical Society of America A. 16:1745
We discuss the use of a physically constrained iterative deconvolution algorithm to combine and deconvolve images taken with interferometric imaging arrays. To demonstrate this method we have simulated imaging with the Large Binocular Telescope [Proc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed60f62d8ea65497bbf0e472c26ccd72
https://doi.org/10.1364/josaa.16.001745
https://doi.org/10.1364/josaa.16.001745