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

Autor:	Seaton, Daniel B., Berghmans, David, Bloomfield, D. Shaun, De Groof, Anik, D'Huys, Elke, Nicula, Bogdan, Rachmeler, Laurel A., West, Matthew J.
Rok vydání:	2023
Předmět:	Astrophysics - Solar and Stellar Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1007/s11207-023-02183-w
Popis:	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 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. Comment: Contact D. B. Seaton for animations referenced in figure captions
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2302.04393 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.