Cubesats for UV astronomy

II shall show that valuable science in the domain of ultraviolet astronomy can be obtained using cubesat platforms. I shall present conservative preliminary designs based on refractive optics and sized for a 3u platform, as well as a concept design based on easily-aligned deployable mirror petals. I suggest that one valuable astronomical goal of a cubesat mission could be the survey of the 217.4 nm extinction band. Another could be a pilot survey for transient events.