  We developed an ultra-compact high-resolution imaging system for cold atoms.
Its only in-vacuum element is a multimode optical fiber with a diameter of
$230\,\mu$m, which simultaneously collects light and guides it out of the
vacuum chamber. External adaptive optics allow us to image cold Rb atoms with a
$\sim 1\,\mu$m resolution over a $100 \times 100\,\mu$m$^2$ field of view.
These optics can be easily rearranged to switch between fast absorption imaging
and high-sensitivity fluorescence imaging. This system is particularly suited
for hybrid quantum engineering platforms where cold atoms are combined with
optical cavities, superconducting circuits or optomechanical devices
restricting the optical access.
