Accession Number:

AD0271090

Title:

A VARIABLE-RANGE SIMULATOR

Descriptive Note:

Corporate Author:

DUNTLEY (S Q) LA JOLLA CALIF

Personal Author(s):

Report Date:

1958-06-21

Pagination or Media Count:

1.0

Abstract:

A variable-range viewer for use with binocular and terrestrial telescopes was devised to enable small test charts to be vi fed in the laboratory under well-controlled, realistically simulated outdoor conditions. Object distances from 2 to 20 miles are covered by 4eans of a variable magnification optical system. Contrast attenuation by the atmosphere is introduced automaticalloy as the simulated range is changed. Provision was made for presetting any desired meteorological range from 2 to 100 miles. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE