Cryogenic Delay Line for Long-Baseline Interferometry in the Far-Infrared
We discuss the design, current status, and ongoing development of a cryogenic delay line for long-baseline direct-detection interferometry in the far-infrared.
Lawson, P. R.↗
Engineering topics
Dumont, P. J.
Publications and source records attributed to Dumont, P. J..
Cryogenic delay line for long-baseline interferometry in the far-infrared
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cryogenic delay line interferometry far-infrared↗
Interferometer Designs for the Terrestrial Planet Finder
The Terrestrial Planet Finder (TPF) is a space-based infrared interferometer that will combine high sensitivity and spatial resolution to detect and characterize planetary systems within 15 pc of our sun. TPF is a key element in NASA's Origins Program and is currently un- der study in its Pre-Project Phase. We review some of the interferometer designs that have been considered for starlight nulling, with particular attention to the architecture and subsystems of the central beam-combiner.
Lawson, P. R.↗
Interferometer Designs for the Terrestrial Planet Finder
The Terrestrial Planet Finder (TPF) is a space-based infrared interferometer that will combine high sensitivity and spatial resolution to detect and characterize planetary systems within 15 pc of our sun. TPF is a key element in NASA's Origins Program and is currently under study in its Pre-Project Phase. We review some of the interferometer designs that have been considered for starlight nulling, with particular attention to the architecture and subsystems of the central beam-combiner.
Lawson, P. R.↗
An Interferometric Search for Bright Companions to 51 Pegasi
We report on a near-infrared, long-baseline interferometric search for luminous companions to the star 51 Pegasi conducted with the Palomar Testbed Interferometer. Our data is completely consistent with a single-star hypothesis.
binaries spectroscopy planetary systems stars 51 P↗
Navigation for the new millennium: Autonomous navigation for Deep Space 1
The autonomous optical navigation system technology for the Deep Space 1 (DS1) mission is reported on. The DS1 navigation system will be the first to use autonomous navigation in deep space. The systems tasks are to: perform interplanetary cruise orbit determination using images of distant asteroids; control and maintain the orbit of the spacecraft with an ion propulsion system and conventional thrusters, and perform late knowledge updates of target position during close flybys in order to facilitate high quality data return from asteroid MaAuliffe and comet West-Kohoutek-Ikemura. To accomplish these tasks, the following functions are required: picture planning; image processing; dynamical modeling and integration; planetary ephemeris and star catalog handling; orbit determination; data filtering and estimation; maneuver estimation, and spacecraft ephemeris updating. These systems and functions are described and preliminary performance data are presented.
Reidel, J. E.↗
Navigation for the New Millennium: Autonomous Navigation for Deep-Space-1
The first flight of NASA's New Millennium Program, Deep Space-1, will include a new navigational technology: a fully autonomous optical navigation system.
New↗
The analysis of solar models: Neutrinos and oscillations
Tests of solar neutrino flux and solar oscillation frequencies were used to assess standard stellar structure theory. Standard and non-standard solar models are enumerated and discussed. The field of solar seismology, wherein the solar interior is studied from the measurement of solar oscillations, is introduced.
Ulrich, R. K.↗