BAA vol 60 No 2 1950 page 47
Mr Ovenden then showed on the screen slide reproductions of two photographs of the (lunar) eclipse taken by Mr M J Smyth, a member who is a research student at the Cambridge Observatories. They were taken with a Leica camera at the focus of a 4 inch Cooke photovisual objective, focal length 72 inches attached to the mounting of the 25 inch Newall refractor.
No comments:
Post a Comment