Koronass F

KORONAS-F (also known as CORONAS-F and AUOS-SM-KF) is a Russian solar observatory. The 2,260 kg (with fuel) spacecraft will be pointing toward Sun within 10 arc-minutes to conduct a variety of observations. In broad categories, it carries X-ray monitors to locate sources within 1 arc-sec, radio receivers to measure flux and polarization, and particle counters.