The radiotelescopes
Radioastronomy started to rise in France after the second world war (Steinberg, 1985). The development of low frequency radio observations was impulsed by the research group of decametric radioastronomy of the Observatory of Paris, based in Meudon, headed by André Boischot.
Reference :
Les débuts de la radioastronomie en France, Steinberg, J.-L., l’Astronomie, Vol. 99, p. 479 - 486, 1985.