Аннотация:Results of the first winter 1998 measurements of the cosmic ray energy spectrum above 10^{16} eV with SPHERE
detector are presented. Detector was lifted by fastened balloon above snow field to 1 km altitude. Cherenkov
light of the air showers reflected from the snow was detected. Detector consists of the 1.2 m diameter spherical mirror and the mosaic of 19 photomultipliers.
