Late 19th century; earliest use found in Chemical News. From radio- + photography, after French radiophotographie.
radiophotography2
/ˌreɪdɪəʊfəˈtɒɡrəfi/
noun
1The transmission of photographs by means of radio. Now rare.
2Astronomy. The generation of images representing the spatial distribution of radio-frequency radiation; photography using radio waves in place of light waves.
Origin
Early 20th century; earliest use found in Wireless World. From radio- + photography.