Compared with making a rigid mirror, making a liquid mirror is a picnic.

ECONOMIST: Mirror, mirror

The result is a liquid mirror as accurately shaped as a conventional rigid one but at about 1% of the cost.

ECONOMIST: Mirror, mirror

Liquid mirror telescopes have been in limited use for two decades, but only now are they finally seeing the beginnings of wider acceptance in the astronomical community.

FORBES: Liquid Mirror Telescope Technology Finally Going Mainstream

To date, the LZT is largest, although India, Belgium and Canada are building the International Liquid Mirror Telescope (ILMT), a 4-meter project which should see completion by March.

FORBES: Liquid Mirror Telescope Technology Finally Going Mainstream

One of the leading proponents of the liquid-mirror approach is Ermanno Borra, a physicist at Laval University in Quebec.

ECONOMIST: Mirror, mirror