Plateau de Bure Interferometer

[1] It was specifically designed for millimetre-wave observations and specialises in studies of line emission from molecular gas and radio continuum of cold dust.

[3] At an observing wavelength of 3 mm (100 GHz frequency) each of these telescopes could resolve two objects 45 arcseconds apart from each other on the sky.

So an interferometer like this one images, at very high resolution (better than 1″), structures smaller than 45″.

On 1 July 1999, an aerial tramway car fell 80 metres (260 ft) to the valley floor.

All 20 occupants were killed, in one of the worst cable car accidents in recorded history.