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Pictures of the Months 2020

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Sunset at Jungfraujoch on a cold winter day. Photo: HFSJG
Patrick Reimann, patented federally engineer-geometer, investigates the influence of the earth's curvature and terrestrial refraction in trigonometric altitude determination from mountain summits and triangulation points a few to 150 kilometers away. Interest is also directed towards how Sir George Everest succeeded around 1850 in determining the trigonometric altitude of Mount Everest, later named after him, to an accuracy of 8 metres. The distance between the visures was about 200 kilometres, which, in theory, did not and still does not lead to the conclusion that such a high degree of accuracy was possible. For this reason, the trigonometric measurements on the Jungfraujoch are now also carried out with 'historical' instruments, in this case the repetition theodolite of the Kern company from 1909. For more details see the annual report 2019. Photo by Julia Wunsch.
NGC 2392 – Eskimo fog. Distance: ca. 3'751 light years (Hipparcos, 1997). Distance: 6'523 ± 652 light years (Gaia, 2018). Diameter: ca. 0.34 light years. Exposure time: 8x30s R, 8x30s G, 8x30s B, 16x30s C. Photo: © Stellarium Gornergrat
The Jungfraujoch from a bird’s eye view. https://www.swisstopo.admin.ch/en/knowledge-facts/geoinformation/a_birds_eye_view_of_Switzerland/switzerland-pictures.html. Photo: Geodaten©swisstopo
The Jungfrau Railways are closed and the Jungfraujoch is almost deserted. Therefore, after work, the chief facility manager of the research station Jungfraujoch, Ruedi Käser, can play his alphorn at the empty Sphinx-observatory without any interruption. Photo: Christine Käser
A new, heated air inlet system was designed and installed at Jungfraujoch by Empa. The bundle of tubing is about 80 meters long and was installed and fixed on the rock from the Sphinx in direction of the Mönch by Rock Tec AG. The tubing is heated, so that the gas flow is guaranteed. This new system shall minimise the contaminations, which arise due to the tourists and the touristic infrastructures. Photos: Martin Vollmer, Empa
The air conditioning in the Sphinx-labs has to be renewed. In a first step, three new air conditioners were installed in the labs for cooling (picture on the left). In a separate room there is a heat exchanger with two ventilators, which emits the waste heat of the air conditioners into the air of the room and into the cupola (picture on the right). Photo: Ruedi Käser

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2020-02-04:
5th VAO Symposium in Bern, Switzerland: from February 4-6, 2020

2020-01-07:
Peking University is a new member of HFSJG

2019-04-25:
Research Station Jungfraujoch as Chemical Landmark 2019

Picture of the Month

July 2020

High Altitude Research Stations
Jungfraujoch and Gornergrat
International Foundation
Sidlerstrasse 5
CH-3012 Bern, Switzerland
Office B20
Telephone: +41 31 631 40 52
e-mail: claudine.frieden@space.unibe.ch
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