autophotograph
/ˌɔːtə(ʊ)ˈfəʊtəɡrɑːf/ /ˌɔːtə(ʊ)ˈfəʊtəɡraf/noun
Originally: = autoradiograph (now rare ). Now usually: a photograph made usually with light from a luminescent sample or object, typically made in order to show the pattern or relative intensity of the light.
Origin
Late 19th century (in an earlier sense). From auto- + photograph.