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Initial observations with the Solwind coronagraph

Journal Article · · Astrophys. J., Lett. Ed.; (United States)
DOI:https://doi.org/10.1086/183243· OSTI ID:5155214
Since 1979 March 28 a new NRL coronagraph called ''Solwind'' has been observing the Sun's outer corona (2.6--10.0 R/sub sun/) routinely with a spatial resolution of 1'.25 and a temporal resolution of 10 minutes. These are the first satellite observations of the outer corona near the peak of a sunspot cycle, when coronal transients and high-latitude streamers are expected to be common. Coronal variations on time scales from 10 minutes to 27 days are revealed dramatically in easily constructed gray-scale difference images.
Research Organization:
E. O. Hulburt Center for Space Research, U.S. Naval Research Laboratory, Washington, D.C.
OSTI ID:
5155214
Journal Information:
Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 237:3; ISSN AJLEA
Country of Publication:
United States
Language:
English