Title: The Cassegrain Coude focus. Alternative.
Date: 1934
Original Format: photograph: negative
Description: Perspective cutaway drawing of observing station built into trunnion. Pencil on paper, 12 x 9 inches, mounted on board, 13 x 9 inches. Signed R.W.P. and dated 1934. Palomar. Porter Papers.
Caltech Archives ID: RWP2.3-6
