Partielle Sonnenfinsternis vom 29. März 2025
Trotz dichter Wolkendecke und Regen, gelang es mir für einen kurzen Augenblick die partielle Sonnenfinsternis am 29. März 2025 von Meilen (Schweiz) aus zu beobachten. Das beeindruckende Naturschauspiel zeigte sich nur kurz, aber umso schöner war dieser flüchtige ...
Observing comet C/2023 A3 (Tsuchinshan-ATLAS) in late October 2024
On the evening of October 21, 2024, around 20:30 local time (Switzerland), I had the opportunity to observe the comet C/2023 A3 Tsuchinshan-ATLAS. Using my Nikon Z7 camera equipped with an AF-S Nikkor 24-70mm lens, I managed to capture the celestial visitor as it made ...
Wondering how Mars looks like through a telescope?
A few days ago, on January 30, 2023, I captured Mars using a webcam (SPC900NC) attached to the Westerlund 90cm Telescope in Uppsala, Sweden. The focal length in the Nasmyth focus is 9 meter. The pixel size of the camera (5.6μm) thus leads to a pixel scale of ...
Finally! Comet C/2022 E3 (ZTF)
After desperately waiting for two weeks in a row, the weather here in Uppsala finally improved and we could observe the famous comet C/2022 E3 (ZTF) with our rooftop telescope at the Angström Laboratory, the so called "Westerlund Telescope". As the comet just ...
Comet C/2020 F3 (Neowise)
Comet C/2020 F3 (Neowise). Crop from an image taken at Postalm (Salzburg, AT) on July 21st, 2020 with a Nikon DF using an AF-S 50mm f/1.8 Nikkor at f/2.2 and ISO 1600. The exposure time was 15 ...
Mercury’s crust revisited
In today's volume of the "Earth and Planetary Science Letters", Michael M. Sori from the "Lunar and Planetary Laboratory" of the University of Arizona (US) writes about how he used data obtained with the MESSENGER (Mercury Surface, Space Environment, Geochemistry and ...
