Front:
erd
48-inch Schmidt Telescope
DIAMETER OF SPHERICAL MIRROR: 72 INCHES, FOCAL LENGTH:
121 INCHES. F RATIO: 2.5. -
THE SCHMIDT TELESCOPE IS AN EXTREMELY EFFICIENT HIGH
SPEED, WIDE ANGLE CAMERA. IT IS AN IDEAL INSTRUMENT FOR
SURVEY AND DISCOVERY WORK. THE COMBINED USE OF A CON-
CAVE SPHERICAL MIRROR AND CORRECTING PLATE GIVES A FIELD
IN WHICH STAR IMAGES ARE ESSENTIALLY PERFECT OVER THE
ENTIRE AREA COVERED BY A PHOTOGRAPH.
PC 11
MOUNT WILSON AND PALOMAR OBSERVATORIES PHOTOGRAPH.
E 47 25
Back:
PUBLISHED BY FRASHERS, INC. POMONA, CALIF.
Foto Card
Scénic Photos of the West
ADDRESS
