Abstract
Radial velocities at 142 points are obtalned on the H II region S206 by photographic Fabry-Perot interferometry using the reflectors with apertures of 2.1 meters at San Pedro Martir and at Tonantzintla. The overall velocity agrees with previous determinations. Our velocities cover the western faint extensions of the nebula not studied hitherto. The velocity field is consistent with a directional expansion of S206.
