RESEARCH STUDY AND DEVELOPMENT OF 1 METRE-MIRROR FOR MOON TRACKING AND PHOTOGRAPHY
Abstract
The optical equipment for the 43-inch telescope was delivered and installed at the Observatoire du Pic-du-Midi in November 1961. Extensive optical tests on the 43-inch mirror revealed the optical surface to be correct within ! lambda/20 over 90% of its effective arc; slightly larger deviations were encountered only within the last 7-cm of its free aperture. The first photographs of the Moon, secured with the aid of this mirror in a f/15 Cassegrain combination are of excellent quality and augur well for the future. The Secasi oscillator to control the drive of the 43-inch telescope was delivered and functions to specifications. The infra-red pyrometer for measurements of the lunar and planetary temperatures was designed and built in our laboratories t Manchester, and used during winter months for the studies of lunar temper ture distribution in the neighbourhood of certain ray craters. The results revealed the crater floors to be cooler in daytime that their surroundings by several degrees. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1962
- Accession Number
- AD0292741
Entities
People
- Zdenek Kopal
Organizations
- University of Manchester