télescope de Herschel

[1976] William Herschel's Large Twenty-Foot Telescope ; J. A. Bennett ; Quarterly Journal of the Royal Astronomical Society 17 (1976) p. 303 [lien]
[2003] Herschel's 40ft reflector: funding and functions ; Michael Hoskin ; Journal for the History of Astronomy 34 (2003) p. 1 [lien]