Our guide, Herr Weil, told us about the founding of the observatory in 1907 for the people of the city of Zurich. The 12 tonne steel telescope is housed on a concrete stand which is set into the earth. The telescope rotates to enable a view of the night sky towards the geographic north and Polaris. We were already impressed by the views over the city with its famous churches - the Grossmunster, Fraumunster and St Peter's for example, as well as many other familiar landmarks. In spite of the light pollution, the Zeiss-made telescope lens enables a view of the night sky through two panels which open. The refracting, colour-correcting lens has a magnifying power of 2500 times that of the human eye.
Herr Weil gave us an astronomy lesson about the solar system, the planets and the stars. Closest to earth is our moon, one of over 172 moons in the solar system. The American Lunar Reconnaissance Orbiter (LRO) which was launched in 2009, is constantly taking photos of the moon and plots its varying distance from the earth during its orbit. Light from the sun takes 8 minutes to reach the earth. We were reminded always to use filters when observing the sun, though. A partial solar eclipse is expected on 22 March 2015.
We also learnt that the eight planets, excluding Pluto, all lie in the same plane, along with the asteroid belt. The sun was formed out of a cloud of hydrogen and dust particles and is 10 million degrees inside. Scientists predict that our sun will die in five billion years' time and become a white dwarf. Comets are formed from ice and snow, and the European (ESA) Rosetta project is planning to land a probe on one on 12 November 2014. The stars are 9.5 billion kilometers away, more than four light years. With our current technology we cannot contact other life forms as the time to reach them, if they existed, would be too great. There are 88 constellations of stars in our galaxy, many of which we can view with the naked eye. Some of the most familiar are Orion, the Great Bear, Cassiopeia and those named after the signs of the zodiac.
You can visit the Observatory on Thursday, Friday, and Saturday evenings from 20.00 without an appointment. See more at this link: http://www.urania-sternwarte.ch/
After the fascinating tour, group chairlady Vreni Riedler led us over the historic Lindenhof to the traditional Lindenhofkeller for a pre-arranged four course dinner. Our hosts introduced the two selected wines from a French vineyard near Perpignan, before serving us with an amuse-bouche prior to the delicious dinner.
We enjoyed Zander filet in filo pastry with beetroot, apple and horseradish salad, a small pumpkin soup topped with foam, black Angus steak, beautifully served, with roast potatoes and vegetables, and finally a tonka bean panna cotta with mango sorbet and mango and passion fruit compote. It was all beautifully presented and cooked, and the company as usual was also very pleasant.
Read more about the restaurant at this link: http://www.lindenhofkeller.ch/
En guete!
