Publication detail

A Numerical Method for the Visualization of the Fe XIV Emission in the Solar Corona Using Broadband Filters

MARTIŠEK, K. DRUCKMÜLLEROVÁ, H.

Original Title

A Numerical Method for the Visualization of the Fe XIV Emission in the Solar Corona Using Broadband Filters

Type

journal article in Web of Science

Language

English

Original Abstract

The goal of this article is to demonstrate how the emission from the Fe XIV 530.3 nm coronal emission line, also known as the green line, can be extracted from images taken during total solar eclipses with commercially available color cameras. This concept is technically feasible because Fe XIV is the brightest optical emission line in the inner corona, and because the sensors of these cameras are retrofitted with a standard Bayer mask, namely, a square grid of spectrally broad (about 100 nm) green, blue, and red filters in the ratio of 2:1:1. The technique presented here, and developed for this purpose, yields qualitatively accurate Fe XIV images, as tested by comparing with Fe XIV eclipse images taken with a 0.15 nm narrow-bandpass filter. While this approach cannot replace narrow-bandpass Fe XIV images for quantitative studies of the corona, it provides a simple and affordable tool for studying the morphology of coronal structures emitting preferentially at the peak ionization temperature of Fe XIV, namely, 1.8 x 10^6 K.

Keywords

methods: data analysis – methods: numerical – Sun: corona – techniques: image processing

Authors

MARTIŠEK, K.; DRUCKMÜLLEROVÁ, H.

RIV year

2011

Released

23. 11. 2011

Publisher

IOP Publising

Location

Bristol, UK

ISBN

0067-0049

Periodical

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES

Year of study

197

Number

2

State

United States of America

Pages from

23

Pages to

29

Pages count

7

BibTex

@article{BUT75495,
  author="Karel {Martišek} and Hana {Druckmüllerová}",
  title="A Numerical Method for the Visualization of the Fe XIV Emission in the Solar Corona Using Broadband Filters",
  journal="ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES",
  year="2011",
  volume="197",
  number="2",
  pages="23--29",
  issn="0067-0049"
}