Involved in the biosynthesis of carotenoids spheroidene and spirilloxanthin. Catalyzes the hydration of neurosporene to the corresponding hydroxylated carotenoids 1-HO-neurosporene and that of lycopene to 1-HO-lycopene (By similarity). rhodopin = all-trans-lycopene + H2O 1-hydroxy-all-trans-1,2-dihydro-neurosporene = all-trans-neurosporene + H2O Carotenoid biosynthesis; spheroidene biosynthesis. Belongs to the CrtC hydratase family. Extended N-terminus.