Archenhold ObservatoryW
Archenhold Observatory
Fabra ObservatoryW
Fabra Observatory
Great Paris Exhibition Telescope of 1900W
Great Paris Exhibition Telescope of 1900
Great refractorW
Great refractor
Greenwich 28 inch refractorW
Greenwich 28 inch refractor
James Lick telescopeW
James Lick telescope
Meudon Great RefractorW
Meudon Great Refractor
Nice ObservatoryW
Nice Observatory
Potsdam Great RefractorW
Potsdam Great Refractor
Vienna ObservatoryW
Vienna Observatory