Sefan Marinov's Coupled Mirrors experiment
Entitled, "The velocity of light is direction dependent," this PDF file of mediocre quality reports on the first experiment to measure linear motion through the firmament.
About the Figure: A modified model of Tycho's system in which the
sun marks the focus of all the orbits of the planets. The planets
accompany the sun about the earth once a year, as do the stars.
Fantastic though this model may appear at first sight, it not
only works, but is physically and mathematically tractable.