INTERFERENCE WEDGE PHOTOMETER FOR TWILIGHT SODIUM Document Details Document Type Technical Report Publication Date May 01, 1959 Accession Number AD0243954 Entities People D.m. Hunten E.b. Lotochinski Organizations University of Saskatchewan Tags DTIC Thesaurus Topics Daylight Electromagnetic Radiation Instrumentation Light (Electromagnetic Radiation) Low Light Levels Measuring Instruments Optical Equipment Optical Instruments Photometers Twilight