Region of star cluster messier 11, EE Barna
© Science Museum / Science & Society Picture Library
Region of star cluster messier 11, EE Barnard, 30 July 1905. Centre of plate, RA, 18h 45m decl, 7.5 degree exposure, 5h, 30m. Enlarged 2 times, 10- inch Bruce doublet of the Yerkes Observatory - Hooker expedition to mount Wilson, California.