Glass positive of:- Great Nebula in Andromeda (M.31.N.G.C.224,205,221). Ritchey and Pease, Yerkes. 24-inch Relflector 1901, September 18. 14"x17". Prepared from negative R.A.S. No.98 Glass positive of:- Great Nebula in Andromeda
Nebula in Andromeda; N.G.C. 224, 205, 221. R.A., Oh 36m. Decl., + 40 degrees 30'. G.W. Ritchey and F.G. Pease, Yerkes Observatory; 1901, September 18; 24-inch Reflector; Focal length, 93 in. Exposure, 4 hours Nebula in Andromeda; N.G.C. 224