[Location: Location_Category='SPACE', Location_Type='SOLAR REGION', Location_Subregion1='CHROMOSPHERE']
Solar Ultraviolet Data from Orbiting Solar Observatory (OSO 8) Space MissionEntry ID: OSO-8-spectro-level1
Abstract: The LPSP multichannel High Resolution UV and visible spectometer was launched
June 21, 1975 and was in operation until September 30, 1978 with 6 channels
covering the most intense optically thick chromospheric lines (H and K CaII,
h and k MgII, Lymann alpha and Lymann beta HI)
The imaging system is a cassegranian telescope, with a collecting area of
170 cm2 and an aperture f/16.
The solar image ... can be scanned by moving the secondary mirror in azimuth and
elevation. Each step increment is either 1' or .5'.
The size of the raster in azimuth and elevation is chosen between 1' to 64'
by binary increments.
The slit defines the focus of the telescope and is formed of two parts :
- a narrow one of 1'x60' which optimizes the spectrometer resolution
- a large one of 6'x6'
a rotating disk actuated by a stepping motor allows the selection of several
The dispersing system is a 6 channel polychromator of the Czerny-Turner type.
The main dispersor is a 1200 grooves (1/mm) plane grating. The scan in
wavelength is performed by rotation of the grating.
Raw data are on 1600 bpi magnetic tapes and saved on 6250 bpi tapes, all
created on CDC computer running NOS-BE system.
The data will be restore in the next years and will be then completely available
Nevertheless, for any urgent need, please contact data Center.
Start Date: 1975-06-21Stop Date: 1978-09-30
SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR ACTIVE REGIONS
SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR FLARES
SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR IMAGERY
SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR PROMINENCES/SOLAR FILAMENTS
SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR ULTRAVIOLET EMISSIONS
SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SUNSPOTS
SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR VELOCITY FIELDS
ISO Topic Category
European Space Agency Scientific Program 810 Rue Mario Nikis F-75015
Phone: (33) 69 85 86 22
Fax: (33) 69 85 86 75
IAS Bat 121 universite Paris XI ORSAY Cedex
Postal Code: 91405
Role: TECHNICAL CONTACT
Phone: (33) 69 85 86 31
Fax: (33) 69 85 86 75
ARTZNER et al : THE LPSP experiment on OSO-8, part I, instrumentation,
description of operations, laboratory calibration and prelaunch performances
(1977) Space Sci. Instr. 3, 131
BONNET et al : THE LPSP experiment on OSO-8, part II, in flight performances
and preliminary results (1978) Astrophys. J. 221, 1032.
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Creation and Review Dates
Last DIF Revision Date: 2005-08-01