Effetto black drop e istanti dei contatti nel transito di Venere sul Sole

Details Effetto black drop e istanti dei contatti nel transito di Venere sul Sole Effetto black drop e istanti dei contatti nel transito di Venere sul Sole

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005asuai...2...15d&link_type=abstract

Astronomia. La rivista dell'Unione Astrofili Italiani (ISSN 0392-2308), N. 2, p. 15 - 19 (marzo-aprile 2005)

Astronomy and Astrophysics

Astronomy

1

Venus: Transit

Scientific paper

Digital measurements of the chords common to the Sun and Venus during the transit of 8 June 2004 are reported. The time of the four contacts of the planet with the solar limb are calculated resolving the relative equations for entry and exit phases. The solutions were obtained with least square methods applied to experimental data with analytical functions used by different Authors during the Sun's eclipses. The well-known black drop effect was observed during the third contact. Atmospheric turbulence and optical effects interfere making timings uncertain by at least one second. There is also a comment about the numerical values and the estimate of the experimental errors. The observations were made by four high school students.

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