Abstract
A basic telescope and a chronometer can be used to learn classical methods of spherical astronomy. The conjunction Venus-Saturn of July 2, 2007 has been observed through July 3 with a 50 mm telescope. Planetary daily motions and angular distances with respect to Psi Leonis, have been obtained with telescope field of view crossing times with an accuracy of 1 arcminute. In the age of CCD astronomy and planetarium programs for personal computer available to everyone, those are educational occasions to approach 3-D astronomy from real data, self obtained.
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