Results 151 to 160 of about 348,356 (178)
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Modeling the quasi-optical performance of CMB astronomical interferometers
Proceedings of SPIE, 2008The Millimeter-Wave Bolometric Interferometer (MBI) is a ground-based instrument designed to measure the polarization anisotropies of the Cosmic Microwave Background (CMB) and contains a number of quasi-optical components, including a complex back-to-back system of corrugated feed-horn antennas. In this paper we use MBI as an example to demonstrate the
Créidhe O'Sullivan +2 more
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Journal of the Optical Society of America A: Optics and Image Science, and Vision, 2005
We present a detailed quantum-statistical model of multimode far-infrared and submillimeter-wave astronomical interferometers. The scheme identifies explicitly the optical modes associated with each telescope and uses these to trace the quantum-statistical properties of the field from a source through the telescopes, through the beam combiners, and ...
Michael Paul Hobson +2 more
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We present a detailed quantum-statistical model of multimode far-infrared and submillimeter-wave astronomical interferometers. The scheme identifies explicitly the optical modes associated with each telescope and uses these to trace the quantum-statistical properties of the field from a source through the telescopes, through the beam combiners, and ...
Michael Paul Hobson +2 more
exaly +3 more sources
Multi-object fixed delay Michelson interferometer for astronomical observation
Proceedings of SPIE, 2012Optical interferometry isn’t only widely applied into optical workshop, but also makes great contribution in astronomical observation. A multi-object fixed delay Michelson interferometer commissioned to search extra-solar planet (exoplanet) is introduced here.
Yongtian Zhu
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Infrared Physics, 1986
Abstract We describe a high efficiency polarizing interferometer for astronomical observations in the submillimetric and millimetric region. The results obtained during tests at the focal plane of TIRGO (Gornergrat) lead to the conclusion that the instrument works with the expected efficiency and can be used for astronomical observations of faint ...
S Aiello, A Bonetti, G Ventura
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Abstract We describe a high efficiency polarizing interferometer for astronomical observations in the submillimetric and millimetric region. The results obtained during tests at the focal plane of TIRGO (Gornergrat) lead to the conclusion that the instrument works with the expected efficiency and can be used for astronomical observations of faint ...
S Aiello, A Bonetti, G Ventura
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Coherence Interferometer and Astronomical Applications
Applied Optics, 1972James B Breckinridge, J B Breckinridge
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Modal analysis of astronomical bolometric interferometers
Journal of the Optical Society of America A, 2004A procedure is described for modeling the behavior of astronomical bolometric interferometers. The scheme is based on the notion of eigenfields. The input and output eigenfields are those field distributions on the sky and at the detector to which the individual telescopes of an interferometer can couple.
Stafford, Withington +2 more
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A Michelson interferometer for astronomical applications
Infrared Physics, 1978Abstract A Michelson interferometer is described which is suitable for absolute flux measurements in the far-infrared. We discuss the problems related to the calibration of the instrument, the evaluation of its efficiency, and the mathematical filtering of the interferograms.
I. Guidi +3 more
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Metrology and pointing for astronomical interferometers
SPIE Proceedings, 2004Metrology and pointing will be enabling technologies for a new generation of astronomical missions having large and distributed apertures and delivering unprecedented performance. The UV interferometer Stellar Imager would study stellar dynamos by imaging magnetic activity on the disks of stars in our Galaxy.
James D. Phillips +5 more
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An astronomical Fabry-P�rot interferometer
Astrophysics and Space Science, 1968A description is given of an improved version of Flynn's photo-electric, pressure-scanning, Fabry-Perot (F.-P.) interferometer which has been built for the purpose of studying line emission from diffuse gaseous nebulae. A discussion of the results obtained, and their reduction, is to be given in subsequent papers.
J. Meaburn, M. G. Smith
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A Shearing Interferometer For Astronomical Wavefront Sensing
SPIE Proceedings, 1986A wavefront sensor has been designed to measure wavefront aberrations occurring during astronomical observations with high spatial and temporal resolution. Results of laboratory experimentation are presented. The sensor consists of a grating lateral shear heterodyne interferometer using a solid-state detector array.
Klaus Freischlad, Chris L. Koliopoulos
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