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Pagina del sito del Dipartimento di Astronomia dell'Università di Bologna che riporta per intero l'importante memoria di G. Horn D'Arturo
sulla black drop
http://www-astronomy.mps.ohio-state.edu/~pogge/Ast161/Unit4/venussun.html
Accounts
of historical expeditions to witness 1761 and 1769 transits from
Richard W. Pogge.
http://www.eso.org/outreach/eduoff/vt-2004/index.html
A
tutorial by David Sellers that accompanies his book entitled The
Transit of Venus & The Quest for the Solar Parallax.
http://www.eso.org/outreach/eduoff/vt-2004/index.html
European Southern Observatory's coordinated observation
project.
http://www.calsky.com/cs.cgi/Sun/7
Offers local circumstances for all transits of Mercury and
Venus.
http://didaktik.physik.uni-essen.de/~backhaus/VenusProject.htm
"Observing,
Photographing and Evaluating the Transit of Venus," a world-wide
observation project on the Internet.
http://www.venus-transit.de/
Applets
about the transit of Venus by Jürgen Giesen.
http://aa.usno.navy.mil/data/docs/Venus2004.pdf
Detailed
data on the visibility of the transit around the world
http://sunearth.gsfc.nasa.gov/eclipse/transit/venus0412.html
More
maps and information on the visibility of the transit from Fred
Espenak.
http://pup.princeton.edu/titles/6795.html
Book entitled June 8, 2004--Venus in Transit by Eli
Maor, ISBN 0691048746.
http://star.arm.ac.uk/history/transit.html
Drawings
of the Transit of Venus by Captain James Cook and Charles Green,
from the Armagh Observatory.
http://canopus.saao.ac.za/~wpk/tov1882/tovwell.html
The
1882 transit as observed from Wellington, South Africa, by Abbie
Ferguson and Mary Cummings.
http://www.eso.org/outreach/eduoff/vt-2004/index.html
Images
related to determining the distance of the earth to the sun; "black
drop" effect illustrations.
http://dspace.dial.pipex.com/town/estate/vs76/trans.htm
An
explanation about the frequency of Venus transits by Peter M.
Langford.