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  • Organic Chemistry  (6.535)
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  • 101
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Electronic equipment for Mark 1 lunar X-ray diffractometer - power supply, logic, and data processing subsystems
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 102
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: High voltage power supply design for lunar X-ray diffractometer
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 103
    Publikationsdatum: 2006-10-26
    Beschreibung: Feasibility of total iron analysis by X-ray fluorescence detection in X-ray diffractometer
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  • 104
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Design and efficiency of large area spark chamber for counting cosmic ray particles
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 105
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Small experimental air-filled spark chamber for recording cosmic ray showers
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 106
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Development of electronic visual instrumentation for spacecraft applications
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 107
    Publikationsdatum: 2006-10-26
    Beschreibung: Single crystal fast neutron spectrometer for measuring continuous spectra
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 108
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Static testing program on cryogenic fuel density measurement, mass flow meters, damped accelerometers, and digital transducer
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 109
    Publikationsdatum: 2006-10-26
    Beschreibung: Flaw detection by ultrasonic scanning using triangulation methods
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 110
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Intensity microphotometer design in which input signal is converted by piecewise-linear diode approximators
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 111
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Solid state image converter capable of imaging radiation from near infrared to 11,000 Angstrom
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 112
    Publikationsdatum: 2006-10-26
    Beschreibung: Generation of horizontal jitter requirements in analog scan video system
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 113
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Miniature stress transducer characteristics
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 114
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Ultimate sensitivity of imaging devices - vidicon sensitivity
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 115
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Raster generator for shock velocity measurements
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 116
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Diffusion transfer process film processing for Ranger IX
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 117
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Standards, sources, and detectors in radiation measurements
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 118
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Oscilloscope display of space vehicle bending motions using switching circuit for sampling accelerometer outputs from vehicle
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 119
    Publikationsdatum: 2006-10-26
    Beschreibung: Thermal sensors for measuring surface temperature and heat flux on glide reentry vehicles
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 120
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: High altitude sampling systems - balloon and rocketborne samplers for collection of radioactive particles and gaseous contaminants
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 121
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Airborne radar system to measure height of ocean waves
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 122
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Plans to attach removable panels to Pegasus C satellite to study space environment
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 123
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Pulse shape discrimination circuitry for dual crystal scintillation detector - Compton reduction
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 124
    Publikationsdatum: 2006-10-26
    Beschreibung: Chromatic refraction of long-focus telescope in astronomical photography
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 125
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Capacitance sensors for measuring liquid propellant sloshing in space vehicle fuel tanks
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 126
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Ionization chamber developed for Mariner IV - components, calibration, operation, and performance in Van Allen belts and solar flare
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 127
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Hydrogen and oxygen sensors to detect explosive forming gases leaking from liquid propellant systems
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 128
    Publikationsdatum: 2006-10-26
    Beschreibung: High temperature liquid metal instrumentation for SNAP-10A flight system and mercury vapor quality
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 129
    Publikationsdatum: 2006-10-26
    Beschreibung: Radiative heat transfer compensating device for gas temperature measurements
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 130
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Beta-excited X-ray sources of strontium 90 promethium 147 for use in design of portable devices
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 131
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Microgaussmeter for low level magnetic measurement
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 132
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    In:  CASI
    Publikationsdatum: 2006-10-26
    Beschreibung: Sample preparation for X-ray diffractometer and guidelines for sample selection and handling of lunar rock specimens for analysis
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 133
    Publikationsdatum: 2006-02-14
    Beschreibung: The use of laser holography for measuring the distortion of antennas under space simulation conditions is described. The subject is the so-called double exposure procedure which allows to measure the distortion in the order of 1 to 30/micrometers + or - 0.5 per hologramme of an area of 4 m diameter max. The method of holography takes into account the constraints of the space simulation facility. The test method, the test set up and the constraints by the space simulation facility are described. The results of the performed tests are presented and compared with the theoretical predictions. The test on the K-Band Antenna e.g., showed a distortion of approximately 140/micrometers + or - 5/micrometers measured during the cool down from -10 C to -120 C.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center 13th Space Simulation Conf.; p 309-319
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  • 134
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    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: Conventional schemes for digitizing large volumes of photographic data are far too costly and time consuming to encourage the undertaking of the ambitious projects using traditional technology. There is a distinct need for fast digitizing systems such as could be derived from development of large format, optically multiplexed CCD systems designed to address these problems. The use of CCD chips for data handling and the capability of using polaroids in the optical path for reduced light scattering are discussed.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 419-427
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  • 135
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    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: Parameters of the UK 1.2 meter Schmidt telescope are described. Plates taken with this instrument are in two categories, those for systematic sky surveys and those taken at the request of research users. A collaborative project with the European Southern Observatory was undertaken to obtain a two-color survey of the sky south of -20 deg declination to complement the Palomar survey. A near infrared survey of the Galactic Plane and the Megallanic Clouds is being done. The area south of -20 deg and the zone between 0 deg and -15 deg are also being surveyed. Pending a decision on survey parameters, all available A quality prism plates are being retained to form a basis for systematic survey. Nearly half the plates taken on a service basis for the UK astronomical community are to fulfill nonsurvey requests. Plates taken for surveys which are not of A grade quality are also made available for research purposes.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 379-385
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  • 136
    Publikationsdatum: 2006-02-14
    Beschreibung: Some software facilities used mainly for information retrieval and analysis at the Padova-Asiago Observatory are discussed. These facilities help guest and resident astronomers to make easier the preparation of plate measurements. The problems connected with the creation, use and management of a data base in a scientific (astronomical) environment are reviewed on the basis of the experience gathered during the last three years. The development plan of the user session environment and its possible applications in a computer network are briefly sketched.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 361-369
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  • 137
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    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: A 256 diode-array will be installed as detector on the ESO OPTRONICS S-3000 measuring machine in order to increase the acquisition rate. A high intensity LED will be used as light source in a pulse mode. The data will be stored on a random access mass storage device as density values for later education. The scanning time for a 30 cm x 30 cm plate with a step size of 10 micron will be less than 10 hours while the dynamic range of the data is expected to be 2.5 density units with an offset of at least 1 unit.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 317-328
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  • 138
    Publikationsdatum: 2006-02-14
    Beschreibung: The design and performance of the automated photographic measuring facility at Cambridge is described. It consists of a precision laser scanning microdensitometer connected to a series of computers that process the data on-line. Plates up to 350 mm square can be measured. The microdensitometer samples the plate to 12 bit accuracy at a speed of 230,000 samples/second. The positional accuracy is better than a micron. Other features include platen rotation and automatic focus.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 277-288
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  • 139
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    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: The expected performance of the Minnesota automated dual-plate scanner (APS) is discussed with regard to photometry, position measurement accuracy, and ability to classify images. In addition, a fast algorithm for calculating image parameters is described.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 267-276
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  • 140
    Publikationsdatum: 2006-02-14
    Beschreibung: Various aspects of the performance of the PDS 1010A microdensitometer are described. The primary points in an upgrade propsal for the unit are outlined. Photometric instabilities in the PDS are mentioned.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 129-134
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  • 141
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    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: Minor modifications of electronic components in the PDS 1010A microdensitometer are discussed. The operational requirements and performance limitations of the PDS are noted. Replacement of the photomultiplier and front-end analog circuitry significantly improved the photometric performance of the PDS. The improvement in density repeatability is marked, and the permissible density slew speed is greatly increased.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 121-128
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  • 142
    Publikationsdatum: 2006-02-14
    Beschreibung: High Altitude Observatory HAO microdensitometer undergoes monthly testing to assure its consistent performance. These tests check positional and photometric stability at the 10 micron aperture level. The HAO test procedure is designed to run without operator intervention following initial configuration of the microdensitometer for each subprocedure. Specialized test software is resident in the PDP 8. The operator selects the proper subprocedure by entering commands. Once computer control is established, it is not relinquished until the test is complete.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Astron. Microdensitometry Conf.; p 19-34
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  • 143
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    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: A number of diagnostic tests are developed for the Photometric Data System PDS 2020G microdensitometer to monitor its performance and to isolate various electromechanical problems. A number of tests which help to diagnose problems with the photometer, positional accuracy and data collection are described. The tests include: (1) scanning a razor blade edge to study the response of the photometer and zero point losses in the coordinate system, (2) scanning a long straight line to evaluate the drunkness of the stage motions, (3) scanning photometric step wedge calibrations to study the response of the photometer, and (4) measurement of a series of high signal to noise plates of the same region of the sky to evaluate the overall performance of the microdensitometer. A variety of electronic tests to isolate electromechanical problems are also performed.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 3-18
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  • 144
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    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: The behavior of ruled and holographic gratings with various coatings after extended exposure to the space environments was examined. The coatings and differentiating between the influences of vacuum and solar illumination were examined. In the past, several ruled and holographic gratings with various coatings were successfully flown on rocket experiments. Future utilizations of such gratings are considered for the Space Telescope and for various Spacelab projects under development. The techniques which is used to replicate gratings can also be used to obtain a wide range of lightweight optical components, including sophisticated aspherical, highly polished mirrors.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Langley Research Center Long Duration Exposure Facility (LDEF); p 163-164
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  • 145
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    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: Electro-optic holographic recording systems were developed. The spaceworthiness of electro-optic crystals for use in ultrahigh capacity space data storage and retrieval systems are examined. The crystals for this experiment are included with the various electro-optical components of LDEF experiment. The effects of long-duration exposure on active optical system components is investigated. The concept of data storage in an optical-phase holographic memory is illustrated.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Langley Research Center Long Duration Exposure Facility (LDEF); p 152-153
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  • 146
    Publikationsdatum: 2006-02-14
    Beschreibung: The specific scientific objectives of this experiment are to measure the spatial distribution, size, velocity, radiance, and composition of microparticles in near-Earth space. The technological objectives are to measure erosion rates resulting from microparticle impacts and to evaluate thin-foil meteor 'bumpers'. The combinations of sensitivity and reliability in this experiment will provide up to 1000 impacts per month for laboratory analysis and will extend current sensitivity limits by 5 orders of magnitude in mass.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Langley Research Center Long Duration Exposure Facility (LDEF); p 117-120
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  • 147
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    In:  CASI
    Publikationsdatum: 2006-06-04
    Beschreibung: The active cavity radiometer (ACR) experiment on the Spacelab 1 mission to measure the total solar irradiance is discussed. Short and long term variations in the total solar output of optical energy are studied. Solar total irradiance observation provides information on the solar cycle and other long term trends in solar output that are of climatological significance as well as short term solar physics phenomena. The interaction of solar radiation with the Earth's atmosphere, oceans, and land masses provides the primary driving forces for the formation of weather systems and the determination of climate. Astrophysical measurements determine the total energy flux. The principal role of the ACR observations support extended solar irradiance experiments on free flying satellites. Solar irradiance measurements are important in the establishment of the radiation scale at the solar total flux level in the international system of units (SI).
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Marshall Space Flight Center Spacelab Mission 1 Expt. Descriptions; 4 p
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  • 148
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    In:  CASI
    Publikationsdatum: 2006-06-04
    Beschreibung: The study of galactic and faint extragalactic extended sources and peculiar ultraviolet objects by a very wide field of view camera, operated in the ultraviolet photometric and spectrometric modes is discussed. The photometric mode is direct photography through filters for observation of the following sources: (1) large scale distribution of ultraviolet radiation in the Milky Way; (2) diffusion of the galactic light above the galactic plane and in front of the large absorbing clouds; (3) the optical emission of the interstellar matter; (4) stars, and starlike objects with diameters less than 3 arc minutes. In the spectrometric mode (nebular spectrograph) the light from the center of the photometric field is concentrated on a slit covering 10 degrees by 10 arc minutes on the sky.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Marshall Space Flight Center Spacelab Mission 1 Expt. Descriptions; 3 p
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  • 149
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    In:  CASI
    Publikationsdatum: 2006-06-05
    Beschreibung: The use of a personal miniature electrophysiological tape recorder to measure the physiological reactions of space flight personnel to space flight stress and weightlessness is described. The Oxford Instruments Medilog recorder, a battery-powered, four-channel cassette tape recorder with 24 hour endurance is carried on the person and will record EKG, EOG, EEG, and timing and event markers. The data will give information about heart rate and morphology changes, and document adaptation to zero gravity on the part of subjects who, unlike highly trained astronauts, are more representative of the normal population than were the subjects of previous space flight studies.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Marshall Space Flight Center Spacelab Mission 1 Expt. Descriptions; 2 p
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  • 150
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    In:  CASI
    Publikationsdatum: 2006-06-04
    Beschreibung: A test of the mapping capabilities of high resolution space photography taken at the resolution limit of image motion on large film format is planned. The metric camera system and its planned operation are described.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Marshall Space Flight Center Spacelab Mission 1 Expt. Descriptions; 4 p
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  • 151
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    In:  CASI
    Publikationsdatum: 2006-06-04
    Beschreibung: Photography and measurement of cloud-like structures of bright parallel bands observed in near infrared photography of the night sky is planned. The instrument is described and the purpose of the experiment summarized.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Marshall Space Flight Center Spacelab Mission 1 Expt. Descriptions; 2 p
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  • 152
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    Publikationsdatum: 2006-06-04
    Beschreibung: High resolution infrared spectroscopic observations of the Earth's limb in the wavelength range characteristic of the vibrational-rotational lines of trace atmospheric constituents is planned. The instrument and its operation and the purpose of the experiments are summarized.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Marshall Space Flight Center Spacelab Mission 1 Expt. Descriptions; 3 p
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  • 153
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    In:  CASI
    Publikationsdatum: 2006-04-10
    Beschreibung: Multidetector spectrometer for measuring surface temperature of Mars, and error analysis on application of stereophotogrammetry to extraterrestrial mapping
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 154
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    Publikationsdatum: 2006-02-27
    Beschreibung: Hydrogen slush density instrumentation for field measurements of slush mass after calibration with reference system
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: RES. ACHIEVEMENTS REV., VOL. 11 1968; P 3-9
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  • 155
    Publikationsdatum: 2006-02-27
    Beschreibung: Using Mossbauer effect and laser interferometry to determine extremely small amplitudes for vibration measurements and calibration of scale models
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: RES. ACHIEVEMENTS REV., VOL. 11 1968; P 19-31
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  • 156
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    In:  CASI
    Publikationsdatum: 2006-02-26
    Beschreibung: Automatic data recording and processing of wind tunnel measurements
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 157
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    Publikationsdatum: 2006-02-26
    Beschreibung: Scientific instrumentation and apparatus for pressure measurement
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 158
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    Publikationsdatum: 2006-02-14
    Beschreibung: The counter is a static thermal diffusion chamber which has been modified to include an optical system for the determination of droplet concentration by the measurement of scattered light. The determination of concentration is made by measurement of the peak scattered light signal from the cloud of growing droplets which is a function of both the droplet concentration and chamber supersaturation. Because the formation of the peak is related to the rate of growth of the droplets and sedimentation, both of which are determined by supersaturation, the system calibration can be uniquely determined by comparison with an absolute counter such as a static diffusion chamber with a photographic recording system.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 40-41
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  • 159
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    Publikationsdatum: 2006-02-14
    Beschreibung: Unlike typical CCN counters, this device counts the numbers of water droplets condensed on aerosol particles sampled on a microcover glass at various different relative humidities. The relative humidities ranged from 75 percent to a calculated value of 110 percent. A schematic of the apparatus is shown. The individual CCN can be identified in an optical micrograph and scanning electron micrograph and may be inspected for their chemical composition later.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 35-36
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  • 160
    Publikationsdatum: 2006-02-14
    Beschreibung: In performing the data analysis of the measurements achieved during the Workshop with the device, a global approach was preferred rather than an individual analysis, in order to illustrate some main characteristics in the behavior of the device with respect to a mean behavior resulting from a general survey of all the equipments involved in each experiment. The device tends generally to overestimate the CCN concentrations measured near the high supersaturations and sometimes underestimates the concentrations close to 0.1% or 0.2% of supersaturation. Despite the fact that it belongs to a type of static diffusion chamber, it shows, however, similar spectra to those obtained with other types of chambers (continuous flow diffusion chamber and haze chamber).
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 17-19
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  • 161
    Publikationsdatum: 2006-02-14
    Beschreibung: The group's CCN counter is described. It is a static, horizontal, parallel plate thermal gradient diffusion chamber. Examples of the application of the CCN are presented and include the CCN spectra measured during the winter of 1978-79 near Elk Mountain, Wyoming. Comparisons of droplet concentrations derived from upwind CCN spectra are covered.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 11-13
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  • 162
    Publikationsdatum: 2006-02-14
    Beschreibung: A parallel beam of X-rays (approximately monoenergetic) passing through a rectangular slit and scattering from two flat mirrors comprise the X-ray test. The two mirrors are arranged in a periscope geometry so that the final reflected beam is parallel to the incident beam but displaced laterally by given amount. One of the detectors used to intercept the reflected X-rays is a one dimensional gas-filled proportional counter which is sensitive to the position (in 1 dimension) at which the X-rays are incident within its detecting "window". The total length of the anode wire of the proportional counter is 120 mm and this length can be divided electronically into a maximum of 1,024 parts. Hence, the output of an experimental run would be the number of incident X-rays that registered on each of the 1,024 channels. Each channel would represent an X-ray at a different spatial location and, hence, at a different scattering angle. In order to look at a wider range of scattering angles, the detector is placed on an optical table which can be rotated.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Alabama Univ. in Huntsville The 1981 NASA(ASEE Summer Fac. Fellowship Program; 6 p
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  • 163
    Publikationsdatum: 2006-02-14
    Beschreibung: The size distribution was measured in the size range between 0.0057 and 0.57 micrometer radius. A description of the instrumentation and data analysis is given, together with the measured size distributions calculated for 23 experiments.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 69-78
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  • 164
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    Publikationsdatum: 2006-02-14
    Beschreibung: The experiments performed at the Workshop were undertaken to confirm the calculated sample volume, determine the usable range of supersaturation, and minimum detectable size. Comparison of absolute CCN concentrations with other state-of-the-art continuous flow diffusion chambers at supersaturations near 1 percent indicated that the volume used produced CCN concentrations well within the range of CCN concentrations determined at the workshop. This agreement is interpreted to mean the sample volume was correct. Direct measurements of the beam geometry done in the laboratory indicated a factor of 4-5 error. This error is apparently due to the larger apparent visible beam diameter versus the actual usable beam diameter given the droplet illumination, chamber optical geometry, microscope optics and film characteristics.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 44-45
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  • 165
    Publikationsdatum: 2006-01-29
    Beschreibung: Synoptic color photographs of North Africa, South America, China, Formosa, and oceanic areas during Gemini 10 flight
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. MANNED SPACECRAFT CENTER MANNED SPACEFLIGHT EXPT. GEMINI 10 MISSION MAR. 1967 (SEE N68-14150 05-30)
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  • 166
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    In:  CASI
    Publikationsdatum: 2006-01-29
    Beschreibung: Synoptic color photography of earth cloud cover during Gemini 10 flight
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. MANNED SPACECRAFT CENTER MANNED SPACEFLIGHT EXPT. GEMINI 10 MISSION MAR. 1967 (SEE N67-14150 05-30)
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  • 167
    Publikationsdatum: 2006-01-16
    Beschreibung: A multi-channel chopper system designed and built to stringent specifications is providing an excellent performance for a total ozone mapping spectrometer (TOMS). State of the art machining technology, suitable material selection, and a way to hold and position the slit plate resulted in the instrument's better than expected performance. A shutter method used for internal calibration allows compensation for the occurrence of an unlikely wavelength shift during testing, launch, or during the orbiting life of the instrument. The TOMS is part of a payload on Nimbus 7 launched on October 24, 1978.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Marshall Space Flight Center The 15th aerospace Mech. Symp.; p 63-75
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  • 168
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    Publikationsdatum: 2006-02-14
    Beschreibung: A brief comparative description is made of the chambers. Overall, comparisons for the various types of experiments - monodisperse, polydisperse and ambient aerosol - showed agreement among these chambers to within 15% in most cases. A careful analysis of the results indicated that a proper accounting of certain parameters would bring about much closer agreement among four of these instruments.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: The Third Intern. Cloud Condensation Nuclei Workshop; p 79-84
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  • 169
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    Publikationsdatum: 2006-02-14
    Beschreibung: In the IHC the critical supersaturation is inferred from the measurement of the size of particles which have grown to their equilibrium size at exactly 100 percent RH. The largest size channel corresponds to a critical supersaturation of 0.014 percent. The growth time required for particles of this size to reach their equilibrium size exceeds the 110 second residence time in the IHC. Since the supersaturation spectrum is always very steep in this region, the contribution of these larger particles which have not yet attained their equilibrium size to smaller size channels is negligible. However, failure of these particles to reach their equilibrium size could result in a significant lowering of the count in the size channel corresponding to the smaller critical supersaturation.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 42-43
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  • 170
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    Publikationsdatum: 2006-02-14
    Beschreibung: The chamber geometry and optical arrangement are described. The supersaturation range is given and consists of readings taken at five fixed points: 0.25%, 0.5%, 0.75%, 1.0%, and 1.25%. The detection system is described including light source, cameras, and photocell detectors. The temperature control and the calibration of the chamber are discussed.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 26-27
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  • 171
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    Publikationsdatum: 2006-02-14
    Beschreibung: The NRL thermal gradient diffusion cloud chamber (TGDCC) consists of two plates 7.5 cm in diameter separated by 1.25 cm and covered with saturated filter paper. The cylindrical wall separating the plates is glass. The top plate is at room temperature and the bottom plate is cooled with a thermoelectric cooler. The temperature difference is measured with several sets of thermocouples. The CCN concentration was determined from the video recording. This procedure of averaging the maximum count obtained on several successive recordings at the same supersaturation results in concentrations which are somewhat higher than concentrations calculated from an average across the plateau.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 14-16
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  • 172
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    Publikationsdatum: 2006-01-29
    Beschreibung: Extravehicular color target photography during Gemini 10 flight
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: MANNED SPACEFLIGHT EXPT. GEMINI 10 MISSION MAR. 1967 (SEE N68-14150 05-30) P 49-53
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  • 173
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    In:  CASI
    Publikationsdatum: 2006-01-29
    Beschreibung: Beta spectrometer measurements on internal, and external radiation environments during Gemini 10 flight
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: MANNED SPACEFLIGHT EXPT. GEMINI 10 MISSION MAR. 1967 (SEE N68-14150 05-30) P 21-36
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  • 174
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    Publikationsdatum: 2006-01-29
    Beschreibung: Triaxis magnetometer measurements on earth magnetic field during Gemini 10 mission
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: MANNED SPACEFLIGHT EXPT. GEMINI 10 MISSION MAR. 1967 (SEE N68-14150 05-30) P 9-19
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  • 175
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    Publikationsdatum: 2006-01-29
    Beschreibung: Spaceborne astronomical camera for ultraviolet photography of hot stars during Gemini flight
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. MANNED SPACECRAFT CENTER MANNED SPACEFLIGHT EXPT. GEMINI 10 MISSION MAR. 1967 (SEE N68-14150 05-30)
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  • 176
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    Publikationsdatum: 2006-01-29
    Beschreibung: Wide angle photography of airglow, zodiacal light, and Milky Way galaxy during Gemini 10 flight
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. MANNED SPACECRAFT CENTER MANNED SPACEFLIGHT EXPT. GEMINI 10 MISSION MAR. 1967 (SEE N68-14150 05-30)
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  • 177
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    Publikationsdatum: 2006-01-29
    Beschreibung: Proposed visual contrast measurements during Gemini 10 flight
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: MANNED SPACEFLIGHT EXPT. GEMINI 10 MISSION MAR. 1967 (SEE N68-14150 05-30) P 55-57
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  • 178
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    Publikationsdatum: 2006-01-29
    Beschreibung: Bremsstrahlung flux-energy spectra inside Gemini 10 spacecraft during flight through south Atlantic magnetic anomaly region
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: MANNED SPACEFLIGHT EXPT. GEMINI 10 MISSION MAR. 1967 (SEE N68-14150 05-30) P 37-48
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  • 179
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    Publikationsdatum: 2006-02-14
    Beschreibung: Two instruments were used to size dry aerosols for the CCN experiments: the Naval Research Laboratory (NRL) instrument which uses an electrical mobility analyzer to separate the aerosol size fractions and a diffusion chamber to grow and count the particles and the University of Wyoming (WYO) aerosol monitoring system. Measurements from these two systems were usually found to be in agreement during the CCN Workshop. Two examples are presented to compare aerosol size distribution measurements of the two instruments: experiment 8 (monodisperse NaCl) and experiment 27 (polydisperse AgI). Differential (dN/dR) and cumulative plots are shown for both instruments for experiment 8 and experiment 27; also shown are Aitken particle measurements for comparison.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 106-107
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  • 180
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    Publikationsdatum: 2006-02-14
    Beschreibung: Nine CCN counters of the static diffusion (SDC) type were compared with one another and with continuous flow diffusion (CFD) chambers. The nine SDCs showed a considerable amount of variation, largely attributable to newness and/or lack of prior calibration of some units. The five more consistent instruments agreed quite well, to within at least 20 percent of the NRL mobility analyzer and to within 10 percent at 1 percent supersaturation. There was satisfactory agreement between the more reliable SDC and CFD chambers.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 57-63
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  • 181
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    Publikationsdatum: 2006-02-14
    Beschreibung: The diffusion tube was designed to operate below about 0.25 percent of water supersaturation. It is simply a long tube lined on the inside with a damp chamois cloth, and heated isothermally to a few degrees centigrade above the incoming air. The diffusion coefficient for water vapor is slightly larger than that for heat, making it possible to supersaturate the airflow. This is the same principle by which transient supersaturations may occur in parallel plate cloud chambers. Only the diffusion of vapor and heat from the walls into the moving air are considered.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 37-39
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  • 182
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    Publikationsdatum: 2006-02-14
    Beschreibung: The chamber is a thermal gradient diffusion type with the upper plate at room temperature and the lower plate thermoelectrically cooled. The light from a 25W projector bulb is focused in a beam of approximations 1x3 mm in the central part of the chamber. The light scattered by drops is viewed in the forward direction (40 deg) by a microscope and a sensitive photodetector. Experiments were performed to relate the peak output from the photocell with the maximum number of drops in the beam recorded photographically. The microscope is used to check the calibration at low concentrations of CCN. The results of the experiments and the performance of the counter are reported.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Desert Research Inst. The Third Intern. Cloud Condensation Nuclei Workshop; p 33-34
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  • 183
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    Publikationsdatum: 2006-04-10
    Beschreibung: Control circuitry designs for wet chemistry experiments in earth orbit or on planetary surface
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
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  • 184
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    Publikationsdatum: 2006-03-26
    Beschreibung: Digital generation of acceleration voltage for mass spectrometer, and development of low power, nondestructive readout, plated-wire memory
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: SPACE PROGRAMS SUM. NO. 37-51, VOL. 3 30 JUN. 1968; P 169-181
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  • 185
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    Publikationsdatum: 2006-03-26
    Beschreibung: Pulse height analyzer, imaging astronomical photometer, and secondary electron conduction vidicon for space application
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: SPACE PROGRAMS SUM. NO. 37-51, VOL. 3 30 JUN. 1968; P 152-167
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  • 186
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    Publikationsdatum: 2006-03-26
    Beschreibung: Atmospheric entry sampling system, and prototype mass spectrometer for planetary atmospheric analysis
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: SPACE PROGRAMS SUM. NO. 37-51, VOL. 3 30 JUN. 1968; P 143-151
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  • 187
    Publikationsdatum: 2006-02-14
    Beschreibung: One of the principal advantages of electrography when compared to photography is the nearly linear relationship between source intensity versus resulting image density. This property allows for simplified and more accurate photometric calibration and permits a certain degree of extrapolation of the calibration to beyond the limits of the faintest photoelectric standard on an exposure. The desires to extract quantitative photometric information from electrographic (or photographic) negatives and to convert this information into a digital format for computer analysis or enhancement led to the widespread use of scanning microdensitometers to perform this A-to-D conversion. Therefore it is of vital importance to understand and, if practical, to avoid any nonlinearities which may be introduced during microdensitometry of electrographic emulsions.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 429-431
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  • 188
    Publikationsdatum: 2006-02-14
    Beschreibung: The scanning of a direct plate with the automatic plate measuring machine which results in the automated selection and description of images is described. The selection of QSO candidates based on color-color diagrams constructed from the APM image data and the analysis of APM raster data for QSOs selected visually from objective prism plates are also discussed.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 417-418
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  • 189
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    Publikationsdatum: 2006-02-14
    Beschreibung: The fundamental limitations of microdensitometers are reviewed and the design of a high microdensitometer described. The system will digitize to 16 bits in transmission at a speed of 100 kHz using a laser beam moving over the emulsion. Other features are automatic platen rotation and autofocus. The cost will be of order $200,000.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 333-341
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  • 190
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    Publikationsdatum: 2006-02-14
    Beschreibung: A new photographic measuring machine is under construction at the Paris Observatory. The amount of transmitted light is measured by a linear array of 1024 photodiodes. Carriage control, data acquisition and on line processing are performed by microprocessors, a S.E.L. 32/27 computer, and an AP 120-B Array Processor. It is expected that a Schmidt telescope plate of size 360 mm square will be scanned in one hour with pixel size of ten microns.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 329-332
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  • 191
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    Publikationsdatum: 2006-02-14
    Beschreibung: A diode-array based image digitizer manufactured by the Eikonix Corp. was tested to see if it can be adapted to the exacting requirements of astronomical densitometry. As the device is presently configured, a dynamic range of 400:1 can be achieved routinely, with a positional accuracy of 2 microns or better. An area of 2048 X 2048 pixels can be scanned in about 5 minutes. Preliminary tests indicate that several relatively simple enhancements can improve both the photometric and the positional accuracy of the device.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 307-315
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  • 192
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    Publikationsdatum: 2006-02-14
    Beschreibung: Motivations for construction of a next generation microdensitometer (NGM) are presented and their effect on the NGM design is discussed. A prototype of such an engine has been constructed at KPNO. Its design and performance is reviewed.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 291-305
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  • 193
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    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: The motivations for constructing a special purpose built microdensitometer are explored. The salient points of some of the microdensitometers are described and the advantages and disadvantages of the system in comparison to a PDS machine are outlined. The principal gain is in speed though at the expense of loss in dynamic range. The effects on the astronomical results are demonstrated. The astronomical results already obtained with these machines and from ongoing projects are described. It is shown that there is a large class of important astronomical problems which can be tackled by these machines but which are not feasibile on the PDS because of the speed of the machine.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 209-228
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  • 194
    Publikationsdatum: 2006-02-14
    Beschreibung: The necessity to incorporate several hardware changes to optimize the Yale PDS 2020G microdensitometer for photometric and astrometric research are discussed. The properties of a new high speed photometer and a positional calibration system are described. The new photometer incorporates a high speed logarithmic analog to digital converter with more than 10 times the resolution of the former system and a cycle time of approximately 50 usec. The positional calibration system monitors the drunkenness of the stages with respect to fixed index lines and enables the correction of the +/- 5 micro stage errors to an accuracy of better than 1 micro.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 151-161
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  • 195
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    Unbekannt
    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: The astrometric and photometric performance of the PDS 1010A microdensitometer are discussed, including the tests used for checking it. The instrument was shown to satisfy operational requirements for photometric measurements of astronomical plates with respect to dynamic range and stability.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 89-95
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  • 196
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    Unbekannt
    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: The results of several parametric studies carried out on the Marshall Space Flight Center (MSFC) Photometric Data System PDS-10 microdensitometer are summarized for the purposes of documenting the operation and limitations of the system for inhouse research and to provide a bench mark for comparison with other microdensitometers. The results are grouped into four general areas. These are: (1) system overall stability to drift, (2) photometric linearity and noise, (3) reproducibility, and (4) scanning performance. Test data taken in order to evaluate the interdependency of scan speed, noise and position are included. Shown also are results of tests for system stability, reproducibility, stray light and PMT settling time.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Marshall Space Flight Center Astron. Microdensitometry Conf.; p 71-88
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  • 197
    Publikationsdatum: 2006-02-14
    Beschreibung: The performance of densitometers used for photometric data reduction of high dynamic range electrographic plate material is analyzed. Densitometer repeatability is tested by comparing two scans of one plate. Internal densitometer errors are examined by constructing histograms of digitized densities and finding inoperative bits and differential nonlinearity in the analog to digital converter. Such problems appear common to the four densitometers used in this investigation and introduce systematic algorithm dependent errors in the results. Strategies to improve densitometer performance are suggested.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 45-58
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  • 198
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    In:  CASI
    Publikationsdatum: 2006-02-14
    Beschreibung: Various perturbations which occurred during the operation of a PDS 2020 GM microdensitometer are reviewed. The effects of elevated temperature, vibration, transient electrical noise, and photometric perturbations are briefly discussed. Sample astronomical results from the PDS 2020 GM unit are presented.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 97-106
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  • 199
    Publikationsdatum: 2006-02-14
    Beschreibung: Digitizing flatfield images produces conditions in the Photometric Data System PDS which cause the measured density to drift by as much as .1 DN during a 10 minute interval. The drift occurs when the PDS, set up in equilibrium at fog level, subsequently scans a reasonably dense region for periods of longer than a few minutes. The drift is manifested primarily as a positive shift in density that is approximately the same for all densities. If the fog level is assumed to be in fact constant and is monitored during scans of flat fields, the PDS drift may be removed by subtracting the difference between the observed fog level and its assumed constant value for each pixel. This function is then smoothed and subtracted, as a function of scan line, from the measured density. The fog level is then adjusted to a standard value by adding a constant. The result is a flattened scan with PDS drift removed to the accuracy within which the fog level drift matches the drift at other levels.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Astron. Microdensitometry Conf.; p 59-69
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  • 200
    Publikationsdatum: 2006-02-14
    Beschreibung: The photometric and positional accuracy of a microdensitometer is examined. A calibrating plate with different density areas available is used to determine photometric accuracy. Position accuracy is evaluated by multiple scans of sharp edges and analyzed statistically.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: NASA. Goddard Space Flight Center Astron. Microdensitometry Conf.; p 35-43
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