1. Science.
- Author
-
Webster, Arthur Gordon
- Subjects
CONFERENCES & conventions ,TELESCOPES ,IMAGE processing - Abstract
The article focuses on the annual spring meeting of the National Academy of Sciences. The meeting took place at the National Museum from April 16-18, 1912. George E. Hale, director of the Mount Wilson Solar Observatory, described the new tower telescope of that observatory. The usual types of telescopes have been the refractor, consisting of a lens set in a tube mounted equatorially, that is, carried upon an axis parallel to that of the earth, and forming an image of the heavenly body that moves about, as the earth revolves, and, secondly, of a reflecting concave mirror similarly mounted, and torming likewise a moving image.
- Published
- 1912