Entry 1 sense Webster, 1913 Astrophotography /ăsˌ-trōf-ət-äg'-rəf-ē/ · As·tro·pho·tog·ra·phy · IPA /ˌæstroʊfətˈɑɡrəfiː/ 01 n. The application of photography to the delineation of the sun, moon, and stars. 1. The application of photography to the delineation of the sun, moon, and stars.