What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
2-Prism 8-inch hole accessory instruments aperture astrophysicist bright lines building Bureau of Standards campus of Ohio Cassegrain focus chiefly Columbus constructed convex mirror Crump dark lines declination axis diameter direct photography Director of Harvard disc dome driving clock Ernest Cherrington Fecker feet girders glass in large glass was poured Globular Star Cluster Harvard College Observatory Hesthal high-temperature star hydrogen line appears intermediate motions J. A. Hynek J. B. McDowell JOINT ADMINISTRATIVE COMMITTEE large mirror light located lower end main mirror mirror cell motor Nebula Newtonian focus observatory is open OBSERVATORY OF OHIO OHIO STATE UNIVERSITY Ohio Wesleyan University optical axis optical glass Perkins mirror Perkins Observatory Perkins-Howard Photographed by Ernest photographic plate polar axis portion President of Ohio Professor Perkins Reflecting Telescope representing Ohio secondary mirror Slow and intermediate spectra spectrograph spectrum staff Swasey Company telescope room telescope tube temperature jacket Trustees of Ohio Warner and Swasey