Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982lastr..96..539d&link_type=abstract
L'Astronomie, vol. 96, Dec. 1982, p. 539-552. In French.
Astronomy and Astrophysics
Astronomy
Astronomical Photography, Planets, Telescopes, Jupiter Satellites, Mars (Planet), Resolution, Saturn Rings, Uranus (Planet)
Scientific paper
The Pic-du-Midi Observatory is located at 2870 m altitude on the north slope of the Pyrenees. Instrumentation has been used at the site since 1941, due to clarity of the sky at that location. A 2 m telescope has recently been installed which is intended to gain a 0.1 arcsec resolution with an enlargement of 1500. The local stellar objects have been viewed with a resolution of 0.5 arcsec, while planetary surfaces have been observed at 0.15 arcsec resolution. Difficulties in maintaining an even temperature in the instrument because of the cold at the altitude and the strong winds are described. Sample observations of the galilean satellites of Jupiter, particularly Ganymede, in addition to Uranus, Saturn, and Mars are presented, with 1000 X enlargements of the latter.
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