The University of Toronto's David Dunlap Observatory, which houses a 1.88-metre reflecting telescope in the town of Richmond Hill, Ontario, may see last light as soon as 30 June. The university is negotiating the sale of the observatory and 77 hectares of surrounding land, estimated to be worth Can$100 million (US$98 million).

Proceeds of the sale will fund a new astronomy and astrophysics institute. But Tom Bolton, one of two members of the university's faculty who still use the telescope regularly, argues that it should be kept for educational purposes at least.