to obtain a temporal register of the vertical turbulence profile.
As far as possible, these goals to the Roque de los Muchachos
Observatory (ORM) will extend.
the other hand, within the framework of wave front sensing,
we deal with the problem of the detection of the phase errors
among the elements of segmented surfaces. We are specially
centred in segmented mirrors of large telescopes, as it is
the case of the Gran Telescopio de Canarias (GTC).