OSO-4
The fourth successful Orbiting Solar Observatory, OSO-4, was launched on 18
October 1967. The objectives of the OSO-4 satellite were to perform solar
physics experiments above the atmosphere and to measure the direction and
intensity over the entire celestial sphere in UV, X, and gamma radiation. The
OSO 4 platform consisted of a sail section (which pointed 2 instruments
continuously toward the Sun) and a wheel section which spun about an axis
perpendicular to the pointing direction of the sail (which contained 7
experiments). The spacecraft performed normally until a second tape
recorded failed in May 1968. OSO-4 was put into a "standby" mode in
November 1969. It could be turned on only for recording special events in
real-time. One such event occurred on March 7, 1970 during a solar eclipse.
The spacecraft became totally inoperable on 7 December 1971. |
HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.
