International Telemetering Conference Proceedings / October 17-20, 1988 / Riviera Hotel, Las Vegas, Nevada / In the past, telemetry data systems in support of JPL flight projects -- such as Voyager and Galileo -- were designed specifically for each mission. Third-generation computers and minicomputers were combined into a distributed system, and many man-hours of software development were invested to meet each project's unique processing requirements. These systems were used to support the Spacecraft testing on the ground and -- later -- for mission operations after launch. The Magellan System Test Data Processing Subsystem (STDPS) marks a departure from these past designs. For the first time, a re-usable telemetry-processing subsystem has been designed that is flexible enough to meet the spacecraft-testing requirements of the present project -- and can be easily changed for future projects as well. These changes are all accomplished through a user-friendly, menu-oriented interface. Extensive software re-programming is no longer required. The Magellan spacecraft is being constructed for JPL by Martin Marietta Astronautics Group, Denver, Colorado. The STDPS is currently in Denver, supporting the spacecraft testing.

Dissertation--Bonn--Rheinische Friedrich-Wilhelms-Universität, 2000. / Bibliogr. p. 131-142.

Th.--Sci.--Toulouse 3, 1981. N°: 979.

No description available.

Dissertation--Mathematisch-Naturwissenschaftliche Fakultät--Bonn--Rheinische Friedrich-Wilhelms-Universität, 1999. Titre de soutenance : FUV spectroscopy of interstellar molecular hydrogen towards the Magellanic clouds. / FUV = far ultraviolet. Bibliogr. p. 83-85.

Reproduction de : Thèse de doctorat : Astrophysique : Toulouse 3 : 2007. / Titre provenant de l'écran-titre. Bibliogr. p. 269-278.

A palaeoenvironmental record for the Wisconsin Later Glacial is provided from ten sites in the Magellan Region, southern Chile. Palynological and lithostratigraphical evidence provided by the sites was correlated with other palaeoenvironmental data from the Magellan region using ¹⁴C dating and tephrochronology. This enabled the construction of a regional record of environmental change that was compared with records in northern Patagonia and the Southern Hemisphere. Deglaciation of the Strait of Magellan began sometime before 16,590 yrs BP. A large Late Glacial ice advance believed to have occurred in the Strait of Magellan and contemporary with ice advances in northern Patagonia (c. 15,000-14,000 yrs BP) is not compatible with the ¹⁴C dating evidence. However, a Late Glacial ice advance along the Strait of Magellan was indicated by the glaciotectonic deformation of, and deposition of glaciolacustrine sediments above the Volcan Reclus tephra layer. Eight ¹⁴C dates provided the mean age estimate of 12,010±55 yrs BP for the deposition of the tephra. The erosion of a raised beach into the glaciolacustrine sediments after 7,950±60yrs BP provided the minimum age for the ice advance. Palynological evidence suggested that cold climatic conditions prevailed throughout the Wisconsin Late Glacial. The dominance of eurythermic pollen taxa, components of Patagonian steppe and glacial tundra vegetation, makes it difficult to infer a detailed climatic signal for the Wisconsin Late Glacial. However, a probable climatic deterioration occurred between c. 15,850-14,900 yrs BP. This may have been contemporary with an ice advance in northern Patagonia. A controversial climatic cooling correlated to the Northern Hemisphere Younger Dryas was not evident in the pollen record. The expansion of <I>Nothofagus</I> forest at c. 10,000 yrs BP indicated a change to a warmer environment contemporary with an intense arid phase. Therefore, it is likely that the large Late Glacial ice advance in the Strait of Magellan occurred between c. 12,000-10,000 yrs BP.

The dissertation presents a method for deriving the shape of a surface from a radar image of the surface. An appropriate model of radar image formation is derived from physical principles. A Bayesian formulation of the inversion problem is developed upon which a computational strategy is based. Theoretical results on random surfaces relevant to the prior distribution are presented, and convergence and optimality properties of a new sampling algorithm are described. The technique is applied to Magellan data of Venus.

No description available.

Frequency-based analysis and comparisons of tip-tilt on-sky data registered with 6.5 Magellan Telescope Adaptive Optics (MagAO) system on April and Oct 2014 was performed. Twelve tests are conducted under different operation conditions in order to observe the influence of system instrumentation (such as fans, pumps and louvers). Vibration peaks can be detected, power spectral densities (PSDs) are presented to reveal their presence. Instrumentation-induced resonances, close-loop gain and future challenges in vibrations mitigation techniques are discussed.