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- Thu Jun 07, 2012 6:52 pm
- Forum: The Observation Deck: Latest Sky Photography
- Topic: Gallery: Venus Transit 2012
- Replies: 184
- Views: 445059
Re: Gallery: Venus Transit 2012
The Venus Transit on the Heliometer of the Kuffner Observatory in Vienna, Austria. Heliometer measurements of the Venus transits in 1761 and 1769 made significant contributions to the determination of the astronomical unit. http://venustransit.kuffner-sternwarte.at/Bilder/1_venustransit-heliometer-1...