... very short focal length of 30 meters (f/0.3), and a cabin for prime-focus observing is supported by the quadripod (at A in the adjoining diagram). ... A schematic diagram of the manner in which the ... The noise temperatures of these amplifiers range from 20aquot; K. to 30Ad K. When the Dicke switch, antenna waveguide , and theanbsp;...
|Title||:||Sky & Telescope|
|Author||:||Charles Anthony Federer|