eROSITA Advent Calendar
eROSITA is the primary instrument on-board the Russian-German "Spectrum-Roentgen-Gamma" (SRG) mission, which was successfully launched from Baikonur on July 13, 2019 and placed in a halo orbit around the L2 point. In 2020, eROSITA has perfomed its first all-sky survey (and is close to finishing the second scan).
In this advent calender, on the backdrop of the first all-sky survey image, you'll find each day a new highlight from the first year of operation of eROSITA as well as some background information on the telescope itself. Enjoy!