Mid-Century Gouache Illustration of a Desert Observatory at Dusk

A mid-century modern gouache illustration of a small mountaintop astronomical observatory in a red rock desert at dusk, wide 16:9 landscape composition, painted in flat, opaque gouache with visible brush texture and slightly chalky matte color. In the center right, on a flat mesa top, stands a white observatory building with a round silver-grey dome, its long shutter slit open and a telescope tube just visible pointing at the sky; beside it a low rectangular block building with one warm yellow l...