Pᵉtɘr Wᵉil8acher
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pwei888.fediscience.org.ap.brid.gy
Pᵉtɘr Wᵉil8acher
@pwei888.fediscience.org.ap.brid.gy
Astronomer at Leibniz-Institut für Astrophysik Potsdam (AIP).

Posting about papers I'm involved in, podcasts I listen to, and other things vaguely related to […]

🌉 bridged from https://fediscience.org/@PWei888 on the fediverse by https://fed.brid.gy/
By chance I took a picture of Mercury while taking one of the moon after a successful observing night. (Unfortunately the picture also has a number of satellites. 🤬)
Zufällig war Merkur mit im Bild als ich nach einer erfolgreichen Beobachtungsnacht den Mond […]

[Original post on fediscience.org]
December 19, 2025 at 6:23 PM
Single 5s exposure from #Paranal observatory.
How many #satellites do you count?
#astronomy #darksky #notostarlink
December 16, 2025 at 8:17 PM
Of course it's much nicer to get there, even it it's still in construction.
I was particularly impressed by the rail system (top middle) that holds the giant windscreen panels (left). The white part on the right is the structure of the #ELT.
December 3, 2025 at 10:14 PM
On #Paranal there is a fixed scope through which one can look at the #elt being erected. Here's an amateur mobile photo to capture the view through that.
December 3, 2025 at 9:59 PM
Instead I get to look at things like this all the time. Exciting as well, and no lasers needed!
#4most #vista #commissioning
December 1, 2025 at 3:15 AM
Good to be back here, even if this time I don't get to observe with this one.
#eso #Paranal
December 1, 2025 at 3:07 AM
Was man bei einer Konferenz in #Gõrlitz so alles bekommen kann...
#dza #lego #adass2025
November 18, 2025 at 12:28 PM
Die Orangerie im Park Sanssouci in #potsdam.
Wenn man Glück mit dem Wetter hat, ist es auch im Oktober noch sehenswert.
October 27, 2025 at 10:05 AM
Die Aussicht vom Belvedere auf dem Pfingstberg in #potsdam ist schon toll. Nach Westen 22.6 km bis zum Götzer Berg, nach Osten 30.6 km bis zum Tower des BER. Und das sind nur die Ausschnitte aus Fotos mit 105mm Brennweite, mit dem Fernglas sah es noch klarer […]

[Original post on fediscience.org]
October 27, 2025 at 9:55 AM
The autumn starting to look nice and colorful.
#potsdam
October 13, 2025 at 2:21 PM
August 26, 2025 at 4:04 PM
August 25, 2025 at 8:04 AM
The #rubin pictures look great!
I guess there's still something to improve, though. If I zoom into it at some points with the skyviewer (https://skyviewer.app/explorer, here in the Virgo image) I do see some dark patches that look strange to me.
June 23, 2025 at 4:50 PM