A compact, environmentally isolated platform for mounting optical components, comprising a plurality of similarly shaped substantially flat plates, an enclosing structural element, and an interior structural element. The similarly shaped substantially flat plates define planes generally parallel to each other. The enclosing structural element is shaped to generally contain the plurality of similarly shaped substantially flat plates with an interior surface shaped to accommodate the perimeters of the plurality of similarly shaped substantially flat plates, and surrounds the perimeters of the plurality of similarly shaped substantially flat plates. The interior structural element passes through or connecting at least two of the plurality of similarly shaped substantially flat plates to provide structural support.