Aperture synthesis imaging of the red supergiant Antares in the 2.3 µm CO lines with the Very Large Telescope Interferometer

Spatial resolution = 9.8 mas, Spectral resolution = 8000

Lower panel shows the observed 2.3 µm CO line spectrum of Antares. As the red dot moves across the spectrum, the reconstructed image is shown in the upper panel. The image is convolved with the interferometer's beam, which is shown in the lower left corner.