Analysis and Critique of the Envelope-Tracing Method for the Investigation of Solar Prominences

Abstract

A method of studying solar prominence motion, wherein the outlines of an eruptive prominence are traced from photographic film at successive intervals of time by means of a specially designed projector, is described. The motion of the prominence in the x and y directions is then plotted against the time and the resulting curves analyzed by means of a curve fitting procedure due to Birge. Results indicate that, exception large probable error, the acceleration of the prominence, in the eruption stage, is very nearly constant both in the x and y directions for the relatively short time interval during which measurements are taken. Main source of error is found to be the measurement of heights above the chromosphere, due to non-uniform centering of the occulting disk of the coronagraph with successive exposures.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1956
Accession Number
AD0740907

Entities

People

  • John Anthony Cape

Organizations

  • Montana State University

Tags

DTIC Thesaurus Topics

  • Cameras
  • Chromosphere
  • Construction
  • Curve Fitting
  • Equations
  • Geometry
  • Graphs
  • High Altitude
  • Latitude
  • Least Squares Method
  • Longitude
  • Materials
  • Numbers
  • Observatories
  • Photographic Film
  • Photographs
  • Photography

Readers

  • Approximation Theory.
  • Geodesy
  • Solar Physics