Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993esasp1157...33m&link_type=abstract
In ESA, Scientific Requirements for Future Solar-Physics Space Missions p 33-41 (SEE N94-22837 06-92)
Astronomy and Astrophysics
Astronomy
1
Atmospheric Effects, Solar Atmosphere, Solar Physics, Space Observations (From Earth), Astronomy, Earth Atmosphere, High Resolution, Spatial Resolution
Scientific paper
Advantages and disadvantages of ground based solar observations are discussed. Fruitful observations form spacecraft as well as from ground based observatories both require close and coordinated cooperation between observers and theoreticians. Advantages of ground based observations are the possibilities for studying long term variations (many years), even outside active regions, and the fact that large telescopes with complex instrumentation can be used. Disadvantages are the limitations on the usable wavelength region and the distorting influence of the Earth's atmosphere. Promising attempts to minimize these distortions have, however, been made by applying new technologies. Nevertheless, observations of very small structures (less than or equal to 0.2 arcsec) in the visible region over extended periods (many hours) will probably forever remain the domain of spaceborne instrumentation.
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