This article discusses the 2019 Event Horizon Telescope image of a black hole as an ontological question for photography, contrasting its spatially distributed operations as a planetary apparatus against its temporal inscriptions of successive histories of scientific realisms following Lorraine Daston and Peter Galison. The 'becoming photographic' of this image, this text argues, hinges on the distance it traverses from its scientific milieu to its vernacular reception, making visible the cultural calibrations that produce a consensually legible image.