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The LPSP instrument on OSO 8. II - In-flight performance and preliminary resultsThe paper describes the in-flight performance for the first 18 months of operation of the LPSP (Laboratoire de Physique Stellaire et Planetaire) instrument incorporated in the OSO 8 launched June 1975. By means of the instrument, an absolute pointing accuracy of nearly one second was achieved in orbit during real-time operations. The instrument uses a Cassegrain telescope and a spectrometer simultaneously observing six wavelengths. In-flight performance is discussed with attention to angular resolution, spectral resolution, dispersion and grating mechanism (spectral scanner) stability, scattered light background and dark current, photometric standardization, and absolute calibration. Real-time operation and problems are considered with reference to pointing system problems, target acquisition, and L-alpha modulation. Preliminary results involving the observational program, quiet sun and chromospheric studies, quiet chromospheric oscillation and transients, sunspots and active regions, prominences, and aeronomy investigations are reported.
Document ID
19780050054
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Bonnet, R. M.
(Centre National de la Recherche Scientifique Verrieres-Le Buisson, France)
Lemaire, P.
(Centre National de la Recherche Scientifique Verrieres-Le Buisson, France)
Vial, J. C.
(Centre National de la Recherche Scientifique Verrieres-Le Buisson, France)
Artzner, G.
(Centre National de la Recherche Scientifique Verrieres-Le Buisson, France)
Gouttebroze, P.
(Centre National de la Recherche Scientifique Verrieres-Le Buisson, France)
Jouchoux, A.
(Centre National de la Recherche Scientifique Verrieres-Le Buisson, France)
Vidal-Madjar, A.
(CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson Essonne, France)
Leibacher, J. W.
(CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson, Essonne, France; Lockheed Research Laboratories, Palo Alto Calif., United States)
Skumanich, A.
(CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson, Essonne, France; High Altitude Observatory; Colorado, University National Center for Atmospheric Research, Boulder, Colo., United States)
Date Acquired
August 9, 2013
Publication Date
May 1, 1978
Publication Information
Publication: Astrophysical Journal
Subject Category
Spacecraft Instrumentation
Accession Number
78A33963
Funding Number(s)
CONTRACT_GRANT: CNES-75-202
CONTRACT_GRANT: NSG-7130
CONTRACT_GRANT: CNES-70-220
CONTRACT_GRANT: CNES-73-202
CONTRACT_GRANT: CNES-74-202
CONTRACT_GRANT: CNES-76-202
CONTRACT_GRANT: CNES-71-202
CONTRACT_GRANT: CNES-77-202
Distribution Limits
Public
Copyright
Other

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