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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: © 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
A beautiful example of a Cumulonimbus capillatus incus (latin: anvil). The picture was taken at Jungfraujoch by Ruedi Käser.
At Jungfraujoch, the entrance doors to the research station and the Sphinx-laboratories have been renewed and updated (new members are now also represented with their logos) by the Pure Polydesign GmbH and the KARGO Kommunikation GmbH. Also, the MeteoSwiss panel at the scientific exhibition has been updated. Next time you are at Jungfraujoch, take a look! Photos: © Georg Wyler, Pure Polydesign GmbH
View from the Konkordiaplatz on the Aletschglacier, in direction of the Eggishorn. Photo: Ruedi Käser
A photo of the Milky Way, taken from the Sphinx-terrace at Jungfraujoch. The picture is the total of 20 shots, in order to give the colours and structures of this phenomenal view even more power. Photo: © Klaus Theiler
A short while ago, a new instrument was installed at the Sphinx-observatory at Jungfraujoch. The ICOS flask sampler automatically collects air samples in glass flasks that are sent to the ICOS-CAL (Central Analytical Laboratories) at the Max-Planck-Institute in Jena, Germany. There, the air samples are analysed for CO2, CH4, N2O and CO as a quality control of the in-situ measurements but also for other tracers such as e.g. H2 and SF6 that are not measured in-situ. The picture shows Dr. Michael Schibig from the Climate and Environmental Physics division of the University of Bern with the flask sampler in the background. Picture: Ruedi Käser, HFSJG

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