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200″ mirror support system
Mt. Wilson comparator, front view
48″ Schmidt corrector plate and grinding machine
200″ dome at Palomar
48″ Schmidt telescope polar axis from truck
Removing mirror support blocking
Plate holder for 200″ prime focus spectrograph (5 x 7 plates) with guider
Aluminizing of mirror at Palomar
Josef Johnson at the controls of the 18″ Schmidt telescope
Fork--48″ Schmidt telescope
48″ Schmidt telescope
Plate holder for 200″ prime focus spectrograph (5 x 7 plates) with guider
Exterior view of the dome building
Control desk of 200″ telescope
B-ray spectrometer coiling winding
200″ coude slit assembly
17″ shock tube--tail stock fixture
48″ Schmidt mirror
Water tank test
Lifting the south yoke through the hatch in the observing floor