Adaptive optics is a well-established technology, first developed for correcting wavefront errors due to atmospheric turbulence. Its applications are expanding into areas ranging from ophthalmology to laser communications, from industrial laser aberration corrections to microscopy. At slower cadence, active optics enables the adjustment of orientation, focal length, and low-order figure of mirrors, in order to compensate for gravitational, thermal, or manufacturing deformations. 

While these applications are mainly for infrared and visible (normal-incidence) optical systems, synchrotron light sources and free-electron laser facilities have implemented deformable x-ray (grazing-incidence) mirrors. This conference will broadly explore the extension of the tools and techniques of adaptive and active optics into the x-ray domain, both for terrestrial (laboratory) and for in-space (x-ray telescope) applications.