FACTS ABOUT MOUNT PALOMAR OBSERVATORIES

$6-1/2 million endowment of General Education Fund of Rockefeller Institute.
2,040 acres.
5,500-foot altitude.
137-foot diameter revolving dome, weight 1,000 ton.
200-inch telescope tube, 60-foot long, weight 150 ton.
200-inch Pyrex mirror, weight 15 ton, 2-foot thick at edge.
500 ton weight of whole mounting.
20-foot diameter dome, housing 18-inch telescope.
45-foot diameter dome, housing 48-inch telescope.
Museum for display of astronomical views.
Cottages for maintenance families.
200-inch mirror brought up November 17, 1947.
First test picture taken December 23, 1947.
Light travels 186,000 miles per second.
About 6 trillion miles equals 1 light year.
200-inch telescope looks out 1 billion light years.