We described in this chapter the complete chain of detection (ToADS) which enabled us to discover more than one ten candidates at the time of the countryside of research of spring 2001. Among the detected candidates 4 were identified like supernovæ of the Ia type including one with a redshift of 1.1.
A modified version of this same code enabled us in spring 2002 to make the first search campaign slipping for supernovæ with great shifts towards the red. This research campaign in particular allowed us to validate the strategy of slipping research which is now applied within the framework of the CFHTLS.
In the continuation, we
will detail how, using the photometric follow-up, in particular with
the space telescope Hubble, we could build the lightcurves of the
supernovæ discovered at the time of the marketing year 2001.