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  • 1
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    INTEGRAL core programme (1997)
    In:  CASI
    Details
    Publication Date: 2004-12-03
    Description: The International Gamma Ray Astrophysics Laboratory (INTEGRAL) mission is described with emphasis on the INTEGRAL core program. The progress made in the planning activities for the core program is reported on. The INTEGRAL mission has a nominal lifetime of two years with a five year extension option. The observing time will be divided between the core program (between 30 and 35 percent during the first two years) and general observations. The core program consists of three main elements: the deep survey of the Galactic plane in the central radian of the Galaxy; frequent scans of the Galactic plane in the search for transient sources, and pointed observations of several selected sources. The allocation of the observation time is detailed and the sensitivities of the observations are outlined.
    Keywords: Astronautics (General)
    Type: ; 587-589
    Format: text
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  • 2
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    Fabrication of silicon devices by ion implantation (1967)
    In:  CASI
    Details
    Publication Date: 2006-10-26
    Description: Ion beam implantation method for fabrication of automatic transistors and integrated circuits
    Keywords: ELECTRONIC EQUIPMENT
    Format: text
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  • 3
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    Primary aberrations for grazing incidence (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Beginning with exact relations between object and image coordinates for a single reflective surface, a systematic analysis of general grazing incidence systems is presented. A complete set of primary aberrations for single-element and two-element systems is developed. The importance of a judicious choice for a coordinate system in showing field curvature to be clearly the predominant aberration for a two-element system is discussed. The validity of the theory is verified through comparisons with the exact ray-trace results for the case of a telescope.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Applied Optics; 16; Sept
    Format: text
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  • 4
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    Advanced X-ray Astrophysics Facility (AXAF) science instrumentation (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: AXAF is to be equipped with a high performance X-ray telescope for the conduction of detailed astrophysics research. The observatory is to be serviced by the Space Station or the Shuttle, depending on capabilities during the AXAF operational period. The AXAF is to utilize the wavelength band from 1.2 A to 120 A. Attention is given to the AXAF science team, the AXAF observatory characteristics, the AXAF science instrument definition program, the Advanced Charge Coupled Device (CCD) Imaging Spectrometer (ACIS), the High Resolution Camera (HRC), the Bragg Crystal Spectrometer (BCS), the X-ray Spectrometer (XRS), the transmission gratings, and the program schedule.
    Keywords: SPACECRAFT INSTRUMENTATION
    Format: text
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  • 5
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    ADVANCED STATIC INVERTER UTILIZING DIGITAL TECHNIQUES AND HARMONIC CANCELLATION (1962)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Advanced static inverter utilizing digital techniques and harmonic cancellation
    Keywords: COMMUNICATIONS
    Type: NASA-TN-D-602
    Format: application/pdf
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  • 6
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    COMPTEL observations of GRO J1655-40 (1997)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The transient black hole candidate GRO J1655-40 was shown elsewhere to eject matter at apparently superluminal velocities. The oriented scintillation spectrometer experiment (OSSE) spectra, measured during the X-ray outbursts, are consistent with a single power law up to 600 keV, with no evidence of a high energy cutoff. The detection of the flaring behavior of this source up to 10 MeV was claimed elsewhere. The Compton telescope (COMPTEL) observations in the 0.75 to 30 MeV band of this source are analyzed. The upper limits on the time averaged emission are presented and gamma ray flares are searched for. It is concluded that the COMPTEL data can neither confirm nor refute the claimed detection of a large gamma ray flare from this source. The gamma ray flare search in five years' worth of data did not reveal evidence for the occurrence of strong flares on timescales of two days.
    Keywords: Astronomy
    Type: Proceedings of 2nd INTEGRAL Workshop 'The Transparent Universe'; 225-228; ESA-SP-382
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  • 7
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    Advanced X-ray Astrophysics Facility (AXAF) instrumentation (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The instrumentation planned for the Advanced X-ray Astrophysics Facility (AXAF), a space-based observation platform for the 1990s, is described. The AXAF will feature a grazing incidence telescope at the end of the observatory and four independently selected instruments at the other end, including: a CCD imaging spectrometer; a Bragg crystal spectrometer; and two transmission grating spectrometers located directly behind the telescope to detect first order spectral images. The instruments are currently in the definition phase to be followed by design and development starting in the late 1980s. A detailed schematic diagram of the Bragg crystal imaging spectrometer is provided.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: AIAA PAPER 86-0374
    Format: text
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  • 8
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    Static power inverter utilizing digital tech- niques and harmonic cancellation (1962)
    In:  Other Sources
    Details
    Publication Date: 2019-05-22
    Keywords: unknown
    Type: AIEE-CP-62-1148
    Format: text
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  • 9
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    Performance analysis of grazing incidence imaging systems (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An exact expression relating the coordinates of a point on the incident ray, a point of reflection from an arbitrary surface, and a point on the reflected ray is derived. The exact relation is then specialized for the case of grazing incidence, and first order and third order systematic analyses are carried out for a single reflective surface and then for a combination of two surfaces. The third order treatment yields a complete set of primary aberrations for single element and two element systems. The importance of a judicious choice for a coordinate system in showing field curvature to clearly be the predominant aberration for a two element system is discussed. The validity of the theory is verified through comparisons with the exact ray trace results for the case of the telescope.
    Keywords: OPTICS
    Type: NASA-TP-1088 , M-241
    Format: application/pdf
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  • 10
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    Scientific involvement in Skylab by the Space Sciences Laboratory of the Marshall Space Flight Center (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The involvement of the Marshall Space Flight Center's Space Sciences Laboratory in the Skylab program from the early feasibility studies through the analysis and publication of flight scientific and technical results is described. This includes mission operations support, the Apollo telescope mount, materials science/manufacturing in space, optical contamination, environmental and thermal criteria, and several corollary measurements and experiments.
    Keywords: SPACE VEHICLES
    Type: NASA-TM-X-64725
    Format: application/pdf
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