  We present a simple phenomenological method for detrending of raw Kepler and
MOST photometry, which is illustrated by means of photometric data processing
of two periodically variable chemically peculiar stars, KIC 6950556 and HD
37633. In principle, this method may be applied to any type of periodically
variable objects and satellite or ground based photometries. As a by product,
we have identified KIC 6950556 as a magnetic chemically peculiar star with an
ACV type variability.
