Aerogel Cherenkov counters are being developed in Budker Institute of
Nuclear Physics for more than 15 years. Aerogel is produced in
collaboration with the Boreskov Institute of Catalysis (Novosibirsk).
High optical parameters of this aerogel make it attractive for use in
RICH detectors and threshold Cherenkov counters. Detailed Monte
Carlo simulation of the light collection process based on measured
light absorption and scattering lengths was extensively used
during counters development and construction.  Present-day project of
Cherenkov counters system for the KEDR detector based on ASHIPH method of
light  collection (Aerogel, wavelength SHIfter,  and PHotomultipliers) is
described. The measurement of the quality of the particle
identification  with the ASHIPH counters was performed.
The pi/K separation is 4.5 sigma for the momentum 1.2 GeV/c and
4.7 sigma   for the momentum 0.86 GeV/c. Timing properties of ASHIPH
counter are measured. Time resolution for pions is 2~ns.
As compared with the direct light collection of Cherenkov light on PMT,
the ASHIPH method allows to diminish the number of PMTs.