Boston

Astronomy
Angular Measurement ...

















 
 
 

  • 1 complete circle = 360° (360 degrees)
  • 1° (1 degree) = 60' (60 arc-minutes)
  • 1' (1 arc-minute) = 60" (60 arc-seconds)

 

  • Width of pinky finger at arm's length: 1°
  • Width of fist at arm's length: 10°
  • Width of outstretched hand at arm's length: 20°

 

  • Width of Sun and Moon: 31' (about ½°)
  • Distance between "Pointer Stars" in Big Dipper: 5°