The results of the MIR-KVANT in 1987–1989

The main results of the MIR-KVANT X-ray observatory in 1987–1989 are reported. These results include the discovery of the hard X-ray radiation from Supernova 1987A, long term imaging observations of LMC field, broad band observations of bright transient sources Vul X Nova, GS2023+338, timing observations of the X-ray pulsars, cartography of the Galactic Plane in 2–30 keV band with arcmin angular resolution.