Fourth Report on Daylight Observation of Stars and Planets
Abstract
Advantages and disadvantages are discussed of a "Two-eye sextant" with which one eye views the celestial body and the other eye the bubble. Although no extended series of tests were made it was concluded that errors in altitude measurements can be made negligible for a normal observer for a sextant of high magnifying power. The construction of a "Two-eye sextant" is described. results of ground and -flight tests are given, insofar as they pertain to the two-eye feature of the instrument, and show that a "two-eye sextant" may be practicable.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 12, 1943
- Accession Number
- AD1175594
Entities
People
- Edward O. Hulburt
- R. Tousey
Organizations
- United States Naval Research Laboratory