Mastodawn

Yesterday we visited the #Volkssternwarte #Köln ✨🔭 The weather was overcast, so conditions were limited, but we were still able to observe #Jupiter and its four #GalileanMoons #Io, #Europa, #Ganymede, and #Callisto.

The main #telescope is a 600 mm #Cassegrain reflector with a focal length of 5,400 mm, which enables high-magnification observations of #planets, the #Moon, double #stars, and bright planetary #nebulae.

🌍 https://www.volkssternwartekoeln.de

#Cologne #Observatory #CLT #CologneLargeTelescope

Liam O'Mara IV, PhD Mar 8

The #Voyager1 spacecraft took photos in 1979 on #ThisDayInHistory that proved the existence of #volcanoes on #Io, the innermost of the four #GalileanMoons of #Jupiter. Proximity to #Europa & #Ganymede force an orbital eccentricity that then creates tidal heating of Io's interior.

Bluejay Mar 4

#FotoVorschlag
“Objekte die mit ‘J’ beginnen” / Things that start with “J”

Two views of Jupiter (and its Galilean moons) through my telescope.

#photography #astrophotography #jupiter #galileanmoons

Daniel Fischer Jan 28

On the Divergent Evolution of Io and Europa as Primordial Ocean Worlds: https://iopscience.iop.org/article/10.3847/1538-4357/ae2ebd/pdf -> New study finds that water makeup of Jupiter’s #GalileanMoons set at birth: https://www.swri.org/newsroom/press-releases/new-study-finds-water-makeup-of-jupiter-s-galilean-moons-set-birth

Bluejay Jan 9

Two views of Jupiter through my telescope last night, taken a few hours before its closest approach to Earth (393.3 million miles/632.9 million km). I was excited to see all four Galilean moons (Ganymede, Callisto, Io, and Europa) around it as well. Not the clearest images as I don’t have the best gear or viewing conditions in light-polluted Brooklyn, but they’re better than my first attempts, and I’ll keep trying to improve.

#photography #astrophotography #jupiter #galileanmoons

Westport Observatory Jan 7

🌌 Star party night at the Westport Observatory — finally.

We’re back tonight. Gate opens @ 8 PM. On the menu: giant Jupiter and its Galilean moons, Saturn’s nearly edge-on rings, Uranus, Neptune, and plenty of deep-sky eye candy. Clear skies willing, it’s going to be a good one.

🔗 https://was-ct.org/programs/public-viewing/

#StarParty #WestportObservatory #Stargazing #Jupiter #Saturn #GalileanMoons #DeepSky #Astronomy #WestportCT #SpaceNight

Wood Sprite Photo Jan 4

Jupiter before sunrise yesterday, built from 177 frames 🔭✨ Europa, Ganymede, and Callisto appear as pinpoints of light nearby.
#Astrophotography #Jupiter #GalileanMoons #PlanetaryImaging #HoustonSkies #WoodSpritePhoto