Stellarium 12.1 released!
Added Caldwell catalog
New skyculture: Tongan
New feature for Oculars plugin: support Barlow/Shapley lenses
Control brightness of the milky way returned (LP: #1106755)
Satellites plugin: New Galileo satellites (LP: #1169252)
Control brightness of the landscapes at startup (LP: #1149882, #603376)
Version 12.1 fixes over 30 bugs in the core application and plugins that concern search problems, some preferences and settings not working correctly, color correction, satellite event times dissent, more precise timing, planet display problems and window boxes behavior.
sudo apt-add-repository ppa:stellarium/stellarium-releases
sudo apt-get update
sudo apt-get install stellarium