Two interacting galaxies

Mount Stromlo and Siding Spring Observatories - Star Plots, Photos from Telescope, Site - Mr. Graeme Blackman, Mr. Robbie Sybaczynsky, Don Carney, Patrick Barling, Simon Fantich, Governor Sinclair, Mrs. Sinclair, Prof. Freeman, Mrs. Eileen Rafferty, Prof. Don Mathewson, Prof. Alex Rodgers, Kim Sebo, Prof. Em. Olin Eggen, Peter Quinn, Stuart Ryder, Pat Barling, Stephanie Cote, Don Faulkner, John Dawe, Allan Barton, Scott Griffiths, Heather Griffiths, Dr. Barry Newell, Eileen Rafferty, Mr. Buchorn, Prof. Dan Mathewson & other