Meaning of speckle pattern

speck'le pat"tern

Pronunciation: [key]
— Astron. Astron.
  1. the visual appearance of a star as viewed through a large telescope, with irregularities caused by the distorting effect of local turbulence in the earth's atmosphere.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.