The SWAP Filter: A Simple Azimuthally Varying Radial Filter for Wide-Field EUV Solar Images

We present the SWAP Filter: an azimuthally varying, radial normalizing filter specifically developed for EUV images of the solar corona, named for the Sun Watcher with Active Pixels and Image Processing (SWAP) instrument on the Project for On-Board Autonomy 2 (PROBA2) spacecraft. We discuss the orig...

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Autores principales: Seaton, Daniel B., Berghmans, David, Bloomfield, D. Shaun, De Groof, Anik, D’Huys, Elke, Nicula, Bogdan, Rachmeler, Laurel A., West, Matthew J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Netherlands 2023
Materias:
Research
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10354124/
https://www.ncbi.nlm.nih.gov/pubmed/37475837
http://dx.doi.org/10.1007/s11207-023-02183-w
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author Seaton, Daniel B.
Berghmans, David
Bloomfield, D. Shaun
De Groof, Anik
D’Huys, Elke
Nicula, Bogdan
Rachmeler, Laurel A.
West, Matthew J.
author_facet Seaton, Daniel B.
Berghmans, David
Bloomfield, D. Shaun
De Groof, Anik
D’Huys, Elke
Nicula, Bogdan
Rachmeler, Laurel A.
West, Matthew J.
author_sort Seaton, Daniel B.
collection PubMed
description We present the SWAP Filter: an azimuthally varying, radial normalizing filter specifically developed for EUV images of the solar corona, named for the Sun Watcher with Active Pixels and Image Processing (SWAP) instrument on the Project for On-Board Autonomy 2 (PROBA2) spacecraft. We discuss the origins of our technique, its implementation and key user-configurable parameters, and highlight its effects on data via a series of examples. We discuss the filter’s strengths in a data environment in which wide field-of-view observations that specifically target the low signal-to-noise middle corona are newly available and expected to grow in the coming years. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s11207-023-02183-w.
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spelling pubmed-103541242023-07-20 The SWAP Filter: A Simple Azimuthally Varying Radial Filter for Wide-Field EUV Solar Images Seaton, Daniel B. Berghmans, David Bloomfield, D. Shaun De Groof, Anik D’Huys, Elke Nicula, Bogdan Rachmeler, Laurel A. West, Matthew J. Sol Phys Research We present the SWAP Filter: an azimuthally varying, radial normalizing filter specifically developed for EUV images of the solar corona, named for the Sun Watcher with Active Pixels and Image Processing (SWAP) instrument on the Project for On-Board Autonomy 2 (PROBA2) spacecraft. We discuss the origins of our technique, its implementation and key user-configurable parameters, and highlight its effects on data via a series of examples. We discuss the filter’s strengths in a data environment in which wide field-of-view observations that specifically target the low signal-to-noise middle corona are newly available and expected to grow in the coming years. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s11207-023-02183-w. Springer Netherlands 2023-07-18 2023 /pmc/articles/PMC10354124/ /pubmed/37475837 http://dx.doi.org/10.1007/s11207-023-02183-w Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Research
Seaton, Daniel B.
Berghmans, David
Bloomfield, D. Shaun
De Groof, Anik
D’Huys, Elke
Nicula, Bogdan
Rachmeler, Laurel A.
West, Matthew J.
The SWAP Filter: A Simple Azimuthally Varying Radial Filter for Wide-Field EUV Solar Images
title The SWAP Filter: A Simple Azimuthally Varying Radial Filter for Wide-Field EUV Solar Images
title_full The SWAP Filter: A Simple Azimuthally Varying Radial Filter for Wide-Field EUV Solar Images
title_fullStr The SWAP Filter: A Simple Azimuthally Varying Radial Filter for Wide-Field EUV Solar Images
title_full_unstemmed The SWAP Filter: A Simple Azimuthally Varying Radial Filter for Wide-Field EUV Solar Images
title_short The SWAP Filter: A Simple Azimuthally Varying Radial Filter for Wide-Field EUV Solar Images
title_sort swap filter: a simple azimuthally varying radial filter for wide-field euv solar images
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10354124/
https://www.ncbi.nlm.nih.gov/pubmed/37475837
http://dx.doi.org/10.1007/s11207-023-02183-w
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