From the edge of a singularity and across desert roads at night, A Camera Obscura teleports its readers through deep space nebulae and the constructs of cityscapes to arrive at what it means to "see." Lovers embrace in sonnets and meditations move through artworks and Hubble Telescope images as these poems employ ekphrastic visions to balance the profound displacements in the most mundane aspects of our lives with science, fact, faith, and song. In the ceremonial blades of Aztec sacrifice and the anonymity of undocumented lives, these poems accrete into a solar system of images seen true, seen askance, seen in error, seen entire. A Camera Obscura is the dark room of the imagination where sīgnum--the sign, the act--becomes the tangible testaments of living.