Model showing distribution of globular star clusters, according to Shapley scale 1mm = 100 par secs. [100,000 light-years to one foot] Model showing distribution of globular star clusters 1930
Glass positive 12" x 10":- globular star cluster in Pegasus. M.15.N.G.C. 7078. Enlarged from R.A.S. neg. no. 102. Ritchey and Sullivan, Yerkes Observatory, 1900, October 3 Glass positive 12" x 10":- globular star cluster in Pegasus. M.15.N.G.C. 7078. 1900