Cinetheodolites, a type of tracking  télescope  apparently developed under the supervision of Clyde Tombaugh at the White Sands Missile range. Their scientific use- to track orbital trajectories between here and the  lune . In order to pave the way for the  lune  visit, it was first necessary to determine that there weren't fast spinning tracks of asteroids lying in belts between here and there. The  négatif  result was the third great achievement of his career. First of course being the  découverte  of Pluto, which was supposed to be Planet X, but wasn't. The second being the result of continuous skysearch for the 12 years following the Pluto  découverte , through which he proved to wide acceptance that there were no other planets beyond Pluto (i.e., that Planet X did not exist).     Deseret était le principal centre d'essais américain d'armes téléguidées et de celles dites "semi-intelligentes".