Both instruments of SRG are now described
After the paper describing eRosita onboard SRG, now the paper describing the second instrument, ART-XC is out. If I'm not mistaken, that's the first Russian X-ray telescope with focussing optics, and the first focusing telescope doing an all-sky survey above 4\,keV at all. Sometimes overshadowed by eRosita in the eyes of international community, it's a very nice instrument in it's own and will certainly contribute to success of the SRG as a whole. If you are interested about it's science goals and performance, please read the paper linked above. From my side, warm congratulations to IKI collegues on getting the paper out!