a reflecting telescope in which a mirror or reflecting prism is mounted on the axis near the eyepiece so that the image may be viewed from outside the telescope tube at right angles to the axis.
[ 1755-65 ]
a reflecting telescope in which a mirror or reflecting prism is mounted on the axis near the eyepiece so that the image may be viewed from outside the telescope tube at right angles to the axis.
[ 1755-65 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012