298
298
Jun 1, 2010
06/10
by
Link, F
texts
eye 298
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Photometric observations of stars in occultation and planetary atmospheric exploration from artificial satellite in orbit
Topics: HOMOGENEITY, SATELLITE MEASUREMENT, STELLAR OCCULTATION, OCCULTATION, PHOTOMETRY, PLANETARY...
Chronique diffusée en direct à Futur Simple, le 22 octobre 2015, à l'antenne de CKRL 89,1
Topic: astronomie comète 67P occultation planétaire
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0.0
web
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Occultation Wiki dumped with WikiTeam tools.
Topics: wiki, wikiteam, MediaWiki, Occultation Wiki, occultationrpgfandomcom
This paper addresses the problem of designing suitable satellite constellations for Radio Occultation missions. Radio occultation for the Earth atmosphere usually requires global coverage and short interval measurements. The 2-D Lattice Flower Constellations theory is here applied to design constellations in order to maximize active time by providing global coverage with frequent measurements. Optimizations are performed using Genetic Algorithms to estimate constellation design parameters....
Topics: Radio Occultation Mission, Lattice Flower Constellations, Genetic Algorithms
542
542
Jun 12, 2011
06/11
by
Davies, James E.; Moeller, Christopher C.; Gunshor, Mathew M.; Menzel, W. Paul; Walker, Nan D
texts
eye 542
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Terra MODIS 250 m observations are being applied to a Suspended Sediment Concentration (SSC) algorithm that is under development for coastal case 2 waters where reflectance is dominated by sediment entrained in major fluvial outflows. An atmospheric correction based on MODIS observations in the 500 m resolution 1.6 and 2.1 micron bands is used to isolate the remote sensing reflectance in the MODIS 25Om resolution 650 and 865 nanometer bands. SSC estimates from remote sensing reflectance are...
Topics: OCCULTATION, TRITON, PLUTO (PLANET), SATELLITE ATMOSPHERES, PLUTO ATMOSPHERE, ASTROMETRY, KUIPER...
142
142
Oct 20, 2018
10/18
by
H. Raab
movies
eye 142
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The Moon occults Aldebaran (Alpha Tauri). Movie taken on December 23, 2015, at the Johannes-Kepler-Observatory in Linz, Austria. Video taken with a Canon EOS 550D in movie mode (1280 x 720 pixels @ 50 frames per second) on a 130/1200mm apochromatic Refractor. The moon moves about 0.55 arc seconds per second of time, or about 0.01 arc second between each frame. The red giant star Aldebaran has an angular diameter of 0.02 arc seconds (which corresponds to the width of a human hair, seen from a...
Topics: Flickr, video, moon, star, aldebaran, occultation, canoneos550d, 1301200mmrefractor, night, sky,...
Occultations of stars by planets, satellites, planetary ring systems, and asteroids offer opportunities to study the occulting bodies in ways not otherwise possible from the surface of the Earth. For example, one can detect even an extremely tenuous atmosphere and can measure the temperature and density profiles of the atmosphere in regions not ordinarily sampled by spacecraft. Occultations also permit direct measurement of the size and shape of solar system objects too small to be directly...
Topics: NASA Technical Reports Server (NTRS), ASTEROIDS, ASTRONOMICAL PHOTOMETRY, OCCULTATION, PLANETARY...
Major scientific results are summarized for the following studies: (1) observations of the 8 April 1976 occultation of epsilon Geminorum by Mars; (2) studies in occultation techniques; and (3) the March 1974 occultation of Saturn by the Moon. A re-analysis of the 1974 lunar occultation of the Titan indicates that Titan is strongly limb darkened, with D approximately greater than 5800km; there is internal evidence in the data that Titan's atmosphere is inhomogeneous; and that observations are...
Topics: NASA Technical Reports Server (NTRS), LUNAR OCCULTATION, NATURAL SATELLITES, SATELLITE ATMOSPHERES,...
523
523
May 29, 2011
05/11
by
Schlegel, Todd T.; Brown, Troy E.; Wood, Scott J.; Benavides, Edgar W.; Bondar, Roberta L.; Stein, Flo; Moradshahi, Peyman; Harm, Deborah L.; Low, Phillip A
texts
eye 523
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Orthostatic intolerance is common in astronauts after prolonged space flight. However, the ''push-pull effect'' in military aviators suggests that brief exposures to transitions between hypo- and hypergravity are sufficient to induce untoward autonomic cardiovascular physiology in susceptible individuals. We therefore investigated orthostatic tolerance and autonomic cardiovascular function in 16 healthy test subjects before and after a seated 2-hr parabolic flight. At the same time, we also...
Topics: ATMOSPHERIC TEMPERATURE, DATA SYSTEMS, METEOROLOGICAL BALLOONS, NAVIGATION SATELLITES, OCCULTATION,...
The planetary occultation program began at Lowell Observatory in 1973 with a worldwide campaign to observe mutual occultations and eclipses of the Galilean Satellites. Then the temperature profile of the Martian atmosphere was measured from data taken during the occultation of epsilon Geminorum, the Rings of Uranus were discovered as they occulted SAO 158687, and the dimensions of Pallas were measured when that minor planet occulted SAO 85009. In 1979 the present grant was initiated, providing...
Topics: NASA Technical Reports Server (NTRS), APPLICATIONS PROGRAMS (COMPUTERS), ASTROMETRY, OCCULTATION,...
The Halogen Occultation Experiment (HALOE) is a solar occultation experiment that will fly on the Upper Atmosphere Research Satellite to measure mixing ratio profiles of O3, H2O, NO2, NO, CH4, HCl, and HF. The inversion of the HALOE data will be critically dependent on a detailed knowledge of eight optical filters. A filter characterization program was undertaken to measure in-band transmissions, out-of-band transmissions, in-band transmission shifts with temperature, reflectivities, and age...
Topics: NASA Technical Reports Server (NTRS), ARTIFICIAL SATELLITES, HALOGEN OCCULTATION EXPERIMENT,...
259
259
May 23, 2011
05/11
by
Korotev, Randy L
texts
eye 259
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Two types of texturally and compositionally similar breccias that consist largely of fragmental debris from meteorite impacts occur at the Apollo 16 lunar site: Feldspathic fragmental breccias (FFBS) and ancient regolith breccias (ARBs). Both types of breccia are composed of a suite of mostly feldspathic components derived from the early crust of the Moon and mafic impact-melt breccias produced during the time of basin formation. The ARBs also contain components, such as agglutinates and glass...
Topics: NITRIC OXIDE, LATITUDE, MODELS, THERMOSPHERE, SOLAR MESOSPHERE EXPLORER, HALOGEN OCCULTATION...
655
655
May 29, 2011
05/11
by
Hanson, John M
texts
eye 655
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The goals of this project are to significantly reduce the time and cost associated with guidance and control design for reusable launch vehicles, and to increase their safety and reliability. Success will lead to reduced cycle times during vehicle design and to reduced costs associated with flying to new orbits, with new payloads, and with modified vehicles. Success will also lead to more robustness to unforeseen circumstances in flight thereby enhancing safety and reducing risk. There are many...
Topics: GLOBAL POSITIONING SYSTEM, IMAGING TECHNIQUES, IONOSPHERIC PROPAGATION, ASSIMILATION, RADIO...
634
634
Jun 21, 2010
06/10
by
NON
texts
eye 634
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Apollo mission 11 trajectory reconstruction and postflight analysis
Topics: INTERFEROMETRY, OCCULTATION, RADIO SOURCES (ASTRONOMY), RELATIVISTIC EFFECTS, FREQUENCY STANDARDS,...
Instrumentation and data acquisition techniques used to record lunar occultations at the University of Illinois Prairie Observatory are described. Tables and graphs summarize data from 64 events which include 30 observations of stars brighter than 7th magnitude, 40 reappearances, 4 angular diameter measurements, 8 observations of binary stars, and 6 observations which may indicate multiplicity.
Topics: NASA Technical Reports Server (NTRS), LUNAR OCCULTATION, PHOTOMETRY, STELLAR MAGNITUDE, STELLAR...
Bodies residing in the outer solar system exhibit unique physical processes, and some of the lessons learned from them can be applied to understanding what occurred in the outer solar system during its formation and early evolution. Pluto, the largest known Kuiper Belt object (KBO), and its near twin Triton--an ex-KBO that has been captured by Neptune--have nitrogen atmospheres that are in vapor-pressure equilibrium with surface ice. These atmospheres are most sensitively probed from Earth by...
Topics: NASA Technical Reports Server (NTRS), STELLAR OCCULTATION, GAS GIANT PLANETS, OCCULTATION, SOLAR...
219
219
Jul 21, 2010
07/10
by
Viswanathan, R.; Barbay, G.; Stevens, N. J
texts
eye 219
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The Hughes SCREENS (Space Craft Response to Environments of Space) technique was applied to generic spin and 3-axis stabilized spacecraft models. It involved the NASCAP modeling for surface charging and lumped element modeling for transients coupling into a spacecraft. A differential voltage between antenna and spun shelf of approx. 400 V and current of 12 A resulted from discharge at antenna for the spinner and approx. 3 kv and 0.3 A from a discharge at solar panels for the 3-axis stabilized...
Topics: MISSION PLANNING, OCCULTATION, ORBITAL MECHANICS, SUN, ASTRONOMICAL CATALOGS, EPHEMERIDES, SIDEREAL...
440
440
Jun 2, 2011
06/11
by
Reichardt, H
texts
eye 440
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The literature on turbulent heat transfer has in the course of years attained a considerable volume. Since this very complicated problem has not as yet found a complete solution, further studies in this field may be expected. The heat engineer must therefore accomodate himself to a constantly increasing number of theories and formulas. Since the theories generally start from hypothetical assumptions, and since they contain true and false assertions, verified knowledge and pure suppositions...
Topics: NEURAL NETS, ATMOSPHERIC CHEMISTRY, HALOGEN OCCULTATION EXPERIMENT, SPATIAL DISTRIBUTION, METHANE,...
Here we report the first attempts to observe a stellar occultation from the Stratospheric Observatory for Infrared Astronomy. We predicted and will attempt to observe the stellar occultations by Pluto and Charon on 23 June 2011 UT and by Pluto and Hydra on 27 June 2011 UT. We shall provide details on the predictions, preparation, and any successful observations and initial results and implications for the Pluto system.
Topics: DTIC Archive, NAVAL OBSERVATORY FLAGSTAFF AZ, *OCCULTATION, AIRBORNE, ASTRONOMICAL OBSERVATORIES,...
The importance of timings and high resolution astrometry in occultation observations is discussed as well as the occultation process itself. The design and operation of the telescope, photodetector, and data acquisition systems are described. Methods are presented for data analysis and model fitting. Observations of beta Capricorni and Uranus occultations are examined. General conclusions concerning occultation observations are explored and future activities at Prairie Observatory are discussed.
Topics: NASA Technical Reports Server (NTRS), DATA REDUCTION, LUNAR OCCULTATION, PHOTOELECTROMAGNETIC...
Calculations are presented for the 1999 opposition class mission and a procedure for obtaining singlar occultation data for any other given Mars mission is given. Occultation data for a Mars orbiter in a 24.5 hour parking orbit and a Mars base were calculated for: sunlight occultation - the time in darkness; and radio communication occultation - the communication losses between the lander and the orbiter, the lander and Earth, and orbiter and Earth.
Topics: NASA Technical Reports Server (NTRS), MANNED MARS MISSIONS, MANNED SPACE FLIGHT, MARS LANDING,...
1,468
1.5K
May 27, 2011
05/11
by
Dalton, W. N.; Elliot, D. B.; Nickols, K. L
texts
eye 1,468
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This report describes the design of a low tip speed, moderate pressure rise fan stage for demonstration of noise reduction concepts. The fan rotor is a fixed-pitch configuration delivering a design pressure ratio of 1.378 at a specific flow of 43.1 lbm/sec/sq ft. Four exit stator configurations were provided to demonstrate the effectiveness of circumferential and axial sweep in reducing rotor-stator interaction tone noise. The fan stage design was combined with an axisymmetric inlet, conical...
Topics: ANALYSIS (MATHEMATICS), STELLAR OCCULTATION, LIGHT CURVE, ATMOSPHERIC MODELS, PLANETARY...
The Sky Is Your Laboratory Advanced Astronomy Projects For Amateurs
Topics: star, asteroid, meteor, ccd, data, stars, photometry, variable, observations, magnitude, variable...
The Lunar Reconnaissance Orbiter (LRO) is a lunar surface mapping and data collection mission launched by NASA in 2009. As a mapping and imaging mission, frequent attitude maneuvering is required. The LRO currently follows a trial-and-error method to design maneuvers to prevent sensitive instruments from pointing at bright objects that may damage the equipment. Additionally, eigenaxis maneuvers are the primary method by which the attitude is controlled. In this thesis, optimal control theory is...
Topics: optimal control, Lunar Reconnaissance Orbiter, LRO, attitude maneuver, occultation avoidance...
188
188
Aug 2, 2010
08/10
by
Allamandola, L. J.; Sanford, S. A.; Schutte, W. A.; Tielens, A. G. G. M
texts
eye 188
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By studying the chemical and isotopic composition of interstellar ice and dust, one gains insight into the composition and chemical evolution of the solid bodies in the solar nebula and the nature of the material subsequently brought into the inner part of the solar system by comets and meteorites. It is now possible to spectroscopically probe the composition of interstellar ice and dust in the mid-infrared, the spectral range which is most diagnostic of fundamental molecular vibrations. We can...
Topics: CHARON, TEMPORAL RESOLUTION, ECLIPSES, OCCULTATION, PLUTO (PLANET), TRITON, ALBEDO, ASTRONOMICAL...
174
174
Jul 12, 2010
07/10
by
NON
texts
eye 174
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No Abstract Available
Topics: ATMOSPHERIC TEMPERATURE, RADIO OCCULTATION, TEMPERATURE PROFILES, VENUS ATMOSPHERE, PIONEER...
178
178
Jun 21, 2010
06/10
by
Lewis, A. R.; Walter, R. A
texts
eye 178
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Thin film penetration by hypervelocity microparticles of carbonyl iron
Topics: PIONEER 6 SPACE PROBE, RADIO TELEMETRY, SPACECRAFT TRACKING, DOPPLER RADAR, MICROWAVE EQUIPMENT,...
We observed occultations by Pluto during a predicted series of events in 2014 July with the 1 m telescope of the Mt. John Observatory in New Zealand. The predictions were based on updated astrometry obtained in the previous months at the USNO, CTIO, and Lowell Observatories. We successfully detected occultations by Pluto of anR=18 mag star on July 23 (14:23:32 00:00:04 UTC to 14:25:30 00:00:04 UTC), with a drop of 75% of the unocculted stellar signal, and of an R=17 star on July 24 (11:41:30...
Topics: DTIC Archive, Levine,Stephen E, US Naval Observatory Flagstaff United States, astronomy,...
249
249
Jul 25, 2010
07/10
by
Waligora, Sharon R
texts
eye 249
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No Abstract Available
Topics: ATMOSPHERIC CIRCULATION, SOLAR SPECTRA, STELLAR OCCULTATION, WIND MEASUREMENT, ZONAL FLOW...
1,083
1.1K
Jul 11, 2010
07/10
by
NON
texts
eye 1,083
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For abstract, see N75-18672.
Topics: EXPLORER 49 SATELLITE, RADIO ASTRONOMY, SATELLITE-BORNE INSTRUMENTS, LUNAR OCCULTATION, LUNAR...
242
242
Jun 1, 2011
06/11
by
Gaier, James R.; Vandenburg, Yvonne Yoder; Berkebile, Steven; Stueben, Heather; Balagadde, Frederic
texts
eye 242
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A series of woven fabric laminar composite plates and narrow strips were fabricated from a variety of pitch-based pristine and bromine intercalated graphite fibers in an attempt to determine the influence of the weave on the electrical and thermal conduction. It was found generally that these materials can be treated as if they are homogeneous plates. The rule of mixtures describes the resistivity of the composite fairly well if it is realized that only the component of the fibers normal to the...
Topics: GLOBAL POSITIONING SYSTEM, RADIO OCCULTATION, EARTH LIMB, REFRACTIVITY, TROPOSPHERE,...
From late 1984 until late 1990, the orbit of Pluto's satellite Charon was sufficiently close to an edge-on configuration, as seen from Earth, to produce transit, occultation, and eclipse events involving the two objects. The systematic observation of these events, each of which offers a unique geometry of Pluto, Charon and shadow, has been used to directly measure several parameters of the system. With data now available from the entire mutual event season, reliable values for the radii of...
Topics: NASA Technical Reports Server (NTRS), CHARON, ORBITS, RADII, ECLIPSES, OCCULTATION, PLUTO (PLANET),...
A study is made of fifty-eight records of naked eye observations of occultations of the planets by the Moon chosen from the Chinese dynastic histories. These records cover the period from 68 B.C. to 575 A.D. Fifty-three of these records fall in the time period between 100 A.D. and 575 A.D., a period with no other known observations useful for Earth rotation studies. The observations are compared to topocentric ephemerides computed using Bretagnon's planetary theories VSOP82 and the...
Topics: DTIC Archive, Hilton, James L, NAVAL OBSERVATORY WASHINGTON DC, *OBSERVATION, *PLANETS, REPRINTS,...
This is a technical report summarizing our progress in our program of contributing high quality Earth-based occultation observations to NASA's Planetary Data System (PDS) Rings Node. During our first year of funding, we selected five data sets for eventual inclusion in the PDS Rings Node. These were Uranus occultation observations obtained by the PI and co-workers from the IRTF of event stars U34 (26 April 1986), U1052 (5 May 1988), U65 (21 June 1990), U7872 (25 June 1991), and U7808 (28 June...
Topics: NASA Technical Reports Server (NTRS), PLANETARY RINGS, STELLAR OCCULTATION, DATA SYSTEMS, URANUS...
2,064
2.1K
Sep 20, 2010
09/10
by
NON
texts
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The Office of Exploration (OEXP) at NASA Headquarters was tasked with defining and recommending alternatives for an early 1990's national decision on a focused program of human exploration of the solar system. The Mission Analysis and System Engineering (MASE) group, which is managed by the Exploration Studies Office at JSC, is responsible for coordinating the technical studies necessary for accomplishing such a task. This technical report, produced by the MASE, describes the process that was...
Topics: ALGORITHMS, VARIABILITY, CALIBRATING, COMPUTER PROGRAMS, ENERGY SPECTRA, GAMMA RAY BURSTS, SPECTRUM...
429
429
May 28, 2011
05/11
by
NON
texts
eye 429
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This report lists reports, articles and other documents recently announced in the NASA STI Database.
Topics: INFRARED RADIATION, PENETRATION, EXTINCTION, TROPOSPHERE, TROPICAL REGIONS, SOLAR SPECTRA, SPACE...
376
376
May 23, 2011
05/11
by
Leidecker, Hennin
texts
eye 376
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Elastic and shear moduli were determined for two aluminum matrix composites containing 20 and 40 volume percent discontinuous silicon carbide, respectively, using transverse, longitudinal, and torsional vibrational modes of specimens prepared as thin beams. These moduli are consistent with those determined from stress-strain measurements. The damping factors for these modes were also determined. Thermal properties are used to show that part of the damping of transverse modes is caused by the...
Topics: SATURN RINGS, URANUS RINGS, SATURN ATMOSPHERE, OCCULTATION, ATMOSPHERIC TURBULENCE, LIBRATIONAL...
171
171
Jul 12, 2010
07/10
by
NON
texts
eye 171
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No Abstract Available
Topics: IONOSPHERIC ELECTRON DENSITY, PLANETARY IONOSPHERES, RADIO OCCULTATION, VENUS ATMOSPHERE, NIGHT,...
Methods and apparatus are disclosed for occulting light. The occulter shape suppresses diffraction at any given size or angle and is practical to build because it can be made binary to avoid scatter. Binary structures may be fully opaque or fully transmitting at specific points. The diffraction suppression is spectrally broad so that it may be used with incoherent white light. An occulter may also include substantially opaque inner portion and an at least partially transparent outer portion....
Topics: NASA Technical Reports Server (NTRS), OCCULTATION, DIFFRACTION, TRANSPARENCE, SHAPES, LIGHT...
183
183
May 24, 2011
05/11
by
Tsuruta, Sachiko; Kellen, Michae
texts
eye 183
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As a promising model for the X-ray emission from radio-quiet quasars and Seyfert 1 nuclei, we present a nonthermal disk-corona model, where soft photons from a disk are Comptonized by the nonthermal electron-positron pairs in a coronal region above the disk. Various characteristics of our model are qualitatively similar to the homogeneous, spherical, nonthermal pair models previously studied, but the important difference is that in our disk-corona model gamma-ray depletion is far more...
Topics: ASTROMETRY, KUIPER AIRBORNE OBSERVATORY, OCCULTATION, CHARGE COUPLED DEVICES, PHOTOMETRY, CELESTIAL...
The Global Positioning System enables positioning in 3 dimensions about our planet. It has been operational since 1994. Twenty-four satellites are used to aclile\,e this performance. The signals sent by these satellites are electromagnetic waves travelling through our atmosphere down to the small receivers used by the civilian community and the military. Because of varying meteorological conditions (namely, temperature and humidity changes along the ray path), the rays do not travel in a...
Topics: NASA Technical Reports Server (NTRS), ATMOSPHERIC TEMPERATURE, DATA PROCESSING, HUMIDITY,...
The Third Catalog of Interferometric Measurements of Binary Stars includes all published measures of binary and multiple star systems obtained by high-resolution techniques (speckle interferometry, photoelectric occultation timings, etc.), as well as negative examinations for duplicity, as of 2001 January 1. This catalog is one of four USNO double star catalogs to be included on a new CD-ROM. A brief summary and statistical analysis of the contents of the catalog are presented.
Topics: DTIC Archive, NAVAL OBSERVATORY WASHINGTON DC, *BINARY STARS, CATALOGS, HIGH RESOLUTION,...
Ozone data from the solar occultation Polar Ozone and Aerosol Measurement (POAM) III instrument are included in the ozone assimilation system at NASA's Global Modeling and Assimilation Office, which uses Solar Backscatter UItraViolet/2 (SBUV/2) instrument data. Even though POAM data are available at only one latitude in the southern hemisphere on each day, their assimilation leads to more realistic ozone distribution throughout the Antarctic region, especially inside the polar vortex. Impacts...
Topics: NASA Technical Reports Server (NTRS), ANTARCTIC REGIONS, OCCULTATION, OZONE, STRATOSPHERE, DATA...
A new analysis of lunar occultation observations from 1955 to 1974 utilizing Atomic Time gives a value for the empirical part of the secular acceleration of the Moon's mean longitude of (- 65 plus or minus 18)/cy(2). This differs from other determinations which utilized the Ephemeris Time scale, based on the apparent annual motion of the Sun about the Earth. These latter, which give ( - 38 plus or minus 4)/cy(2), measure only the tidal component of the Moon's longitude acceleration. The...
Topics: DTIC Archive, NAVAL OBSERVATORY WASHINGTON DC, *ACCELERATION, *OCCULTATION, DETERMINATION,...
Marley (1990) and Marley and Porco (1993) proposed that f-mode oscillations of Saturn could excite resonant density and bending waves in the inner C-ring. They hypothesized that certain wave features discovered by Rosen et al. (1991) that were not associated with known satellite resonances could be the result of such resonant interactions with the planetary oscillation modes. They also predicted that if this was the case the waves would be found to be density (and not bending) waves by Cassini...
Topics: NASA Technical Reports Server (NTRS), ASTEROSEISMOLOGY, SATURN RINGS, SEISMOGRAMS, SATURN (PLANET),...
This final report for NASA Contract NAGw-867 consists of abstracts of the first three papers in a series of four appearing in Icarus that were funded by the preceding contract NAGw-224: (1) Speckle Interferometry of Asteroids I. 433 Eros; (2) Speckle Interferometry of Asteroids II. 532 Herculina; (3) Speckle Interferometry of Asteroids III. 511 Davida and its Photometry; and the fourth abstract attributed to NAGw-867, (4) Speckle Interferometry of Asteroids IV. Reconstructed images of 4 Vesta;...
Topics: NASA Technical Reports Server (NTRS), ASTEROIDS, PHOTOMETRY, SPECKLE INTERFEROMETRY, ABSTRACTS,...
Ozone profiles retrieved from Stratospheric Aerosol and Gas Experiment (SAGE III) limb scatter measurements are compared with correlative measurements made by occultation instruments (SAGE II, SAGE III and HALOE [Halogen Occultation Experiment]), a limb scatter instrument (Optical Spectrograph and InfraRed Imager System [OSIRIS]) and a series of ozonesondes and lidars, in order to ascertain the accuracy and precision of the SAGE III instrument in limb scatter mode. The measurement relative...
Topics: NASA Technical Reports Server (NTRS), OZONE, OZONOMETRY, SAGE SATELLITE, DATA ACQUISITION,...
X-ray sources are reported for HZ Herculis, supergiant primary X-ray binary systems, and Cyg X-3. Also reported is an analysis of earlier optical and X-ray observations, along with optical coverage of the 1974 lunar occulation of the Crab Nebula.
Topics: NASA Technical Reports Server (NTRS), OPTICAL PROPERTIES, X RAY SOURCES, CRAB NEBULA, LUNAR...
Topics include post flight 2A status, groundrules, anomaly resolution, Early Communications Subsystem anomaly and resolution, Logistics and Maintenance plan, case for obscuration, case for electrical short, and manual fault isolation, and post mission analysis. Photographs from flight 2A.1 are used to illustrate anomalies.
Topics: NASA Technical Reports Server (NTRS), ANOMALIES, INTERNATIONAL SPACE STATION, FAULTS, LOGISTICS,...
199
199
Jun 21, 2010
06/10
by
Konkov, A. A., et al
texts
eye 199
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Spectral characteristics of air at high temperatures
Topics: BANDWIDTH, MONOCHROMATIC RADIATION, LUNAR OCCULTATION, MATHEMATICAL MODELS, RADIO ASTRONOMY,...
