a telescope similar in design to the Cassegrainian telescope but less widely used.
[ 1755-65; named after James GREGORY; see -IAN ]
a telescope similar in design to the Cassegrainian telescope but less widely used.
[ 1755-65; named after James GREGORY; see -IAN ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012