  We present a conceptual design of a high-performance camera system with
applications to neutrino detectors, deep sea exploration, and glaciology. The
design combines ultra-sensitive cameras with a number of well-calibrated light
sources enclosed in a pressure vessel. The instrument will be capable of
withstanding extreme environments such as those encountered in Antarctica or
the deep ocean, and be deployable as a standalone system that can be retrieved
for deep-sea exploration or glaciology. The camera system is designed to be
replicated and deployed in multiple detectors, requiring only modest
modifications from one detector to another. The instrument combines a number of
capabilities essential for neutrino detector calibrations, including
characterization of the scattering and absorption properties of the optical
medium, measurement of geometries via photogrammetry, and detector
surveillance. The ability to deploy the instrument at different detector sites
also offers opportunities for cross-calibration efforts. We present the
conceptual design of the instrument and describe plans to produce a prototype.
