Accession Number : AD0681177

Title :   RESEARCH DIRECTED TOWARD THE INVESTIGATION OF SOLAR SURFACE STRUCTURES BY MEANS OF SPECTROHELIOGRAPH TECHNIQUES.

Descriptive Note : Final rept. 10 Jun 67-10 Oct 68,

Corporate Author : HARVARD COLL OBSERVATORY CAMBRIDGE MASS

Personal Author(s) : Title,Alan

Report Date : NOV 1968

Pagination or Media Count : 15

Abstract : The report describes a system - the Spectraspectroheliograph - for obtaining two dimensional arrays of spectra and recombining them into spectroheliographs. The technique required the development of a high speed framing camera with a 20:1 exposure to advance cycle. The camera design concepts are outlined. During the summers of 1967 and 1968 the system was operated at Sacramento Peak and Kitt Peak Observatories, respectively. The data obtained is catalogued; the data reduction procedures that have been developed are described; and the present plans for analysis are outlined. (Author)

Descriptors :   (*ASTRONOMICAL CAMERAS, SPECTROGRAPHIC CAMERAS), (*SOLAR ATMOSPHERE, SPECTRUM ANALYZERS), SURFACE PROPERTIES, MAGNETIC FIELDS, LINE SPECTRA, HIGH SPEED CAMERAS

Subject Categories : Astrophysics
      Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE