Accession Number : AD0808792

Title :   NARROW-BAND ULTRAVIOLET FILTER PHOTOGRAPHY.

Descriptive Note : Technical rept. Nov 65-May 66,

Corporate Author : AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OH

Personal Author(s) : Mangold, Vernon L.

Report Date : OCT 1966

Pagination or Media Count : 23

Abstract : The experimental program was undertaken to investigate the spectral characteristics of narrow-band ultraviolet filter photography during daylight hours for the wavelength range of 3000 to 4000 angstroms. The filters used in the study were multilayer dielectric Fabry-Perot filters with a spectral band pass of approximately 100 A covering the wavelength range of 3000 to 4000 A. The unusual penetration effects, due to ultraviolet scattering and unique contrast changes, are presented in detail. Some spectral reflectance data of selected materials for the wavelength range of 3000 to 4000 A are included within the report. Combining spectral ranges on a single piece of film for the purpose of enhancing the over-all contrast were investigated. A description of the equipment and films used in the investigation is discussed. The study shows the narrow-band ultraviolet filter photography provides very useful information for reconnaissance and surveillance applications. (Author)

Descriptors :   *ULTRAVIOLET RADIATION), (*PHOTOGRAPHY, NARROWBAND, ULTRAVIOLET FILTERS, FEASIBILITY STUDIES, GROUND PHOTOGRAPHS, PHOTOGRAPHIC CONTRAST, PHOTOGRAPHIC ACUTANCE, INFRARED PHOTOGRAPHY, INFRARED SPECTRA, ULTRAVIOLET SPECTRA, VISIBLE SPECTRA, SURFACE TARGETS, REFLECTIVITY, MULTIBAND SPECTRAL RECONNAISSANCE, PHOTOINTERPRETERS, SPECTRUM SIGNATURES, SNOW, GRASSES, SOILS.

Subject Categories : Photography
      Military Intelligence

Distribution Statement : APPROVED FOR PUBLIC RELEASE