RELATIVE ADVANTAGES OF INTERFEROMETER OVER TELESCOPE FOR MEASURING SOURCE SIZES
Final rept. for 15 Nov 1963-31 Jan 1965
TECHNICAL OPERATIONS INC BURLINGTON MA
Pagination or Media Count:
In the report an analysis of the Michelson stellar, Fizeau double- slit and the folding interferometers is given and their relative merits are compared to a telescope for performing source size measurements. The atmospheric effects upon these instruments are examined. Experimental procedures describing the use of the Michelson stellar interferometer are given. Experimental difficulties encountered in the program are also discussed. It is concluded that interferometers are a better instrument than telescopes for source size measurements in the presence of a turbulent atmosphere if information about the source geometry and intensity distribution is available. When the source geometry and intensity distribution are not known, then none of the instruments give an absolute source size measurement under turbulent conditions.