David Dunlap Observatory to close, replaced by Dunlap Institute

The observatory, in a sense, has fallen victim to the urban sprawl around Toronto. Light pollution from encroaching development has "limited the reach of the telescope in terms of the objects you can actually see," explained Pekka Sinervo, dean of U of T's arts and science department.

When it first opened 72 years ago, it was surrounded by farmers' fields. Now, housing abuts the wooded site that is home to the domed observatory and its stately administrative building.

...

Prof. Sinervo said money from the sale would be used to create a new Dunlap Institute at the university's downtown St. George campus. Among other things, the institute would concentrate on the design and development of sophisticated equipment for the next generation of huge telescopes being planned for more remote and darker locations around the world.

Globe and Mail - Historic telescope blinded by the light - October 16, 2007

The article mentions the work of Prof. Tom Bolton related to black holes, according to the Wikipedia article on Cygnus X-1 the relevant article is

Identification of Cygnus X-1 with HDE 226868
Nature 235, 271 - 273 (04 February 1972); doi:10.1038/235271b0

PS The palindrome of Bolton would be "notlob"