Heliograph /(hē"lĭ*ō̇*grȧf)/

He·li·o·graph

Heliograph

n.
  1. A picture taken by heliography; a photograph.
  2. An instrument for taking photographs of the sun.
  3. An apparatus for telegraphing by means of the sun's rays. See Heliotrope, 3.

Heliograph

v. t.
  1. To telegraph, or signal, with a heliograph.
  2. To photograph by sunlight.