The Cirrus Flux Camera (CFC), a subsystem of the OreSat CubeSat, is designed to characterize and monitor the physical properties and distribution of cirrus clouds from space, with the eventual aim of contributing data to global climate models. Initially envisioned as a visible-spectrum camera with an optical filter wheel, the CFC is now being developed as a shortwave infrared (SWIR) imager with bespoke filters applied directly to the sensor, in a joint project with the Laboratory for Aerosols, Clouds, and Optics at the University of Maryland, Baltimore County. We present the initial mechanical design of the subsystem and related electronic and thermal considerations, as well as a discussion of the concept of operations and a brief roadmap towards future engineering and scientific goals.