Dual reflective baffle system for the BeCOAT telescope

The stray light rejection properties of the Lockheed-Stavroudis reflective baffle geometry as implemented in the BeCOAT telescope are described in terms of PST and baffle efficiency. PST is dominated by scatter from diffuse baffle surfaces (aperture stop, etc.) and mirror scatter and reflective baffle edge specular reflections. Manufacturing and alignment tolerances for this system are discussed.