Collection of Analysis Tools for Coronal Holes aka CATCH
For best results please download and install CATCH as a SSW/IDL package. It is available by both the SSW installation and ssw_upgrade methods • See http://lmsal.com/solarsoft/ssw_install.html • For more information see http://www.lmsal.com/solarsoft/ssw_packages_info.html or consult the CATCH USER GUIDE.
Catch was created in order to collect and structure coronal hole identification, extraction and analysis in a handy and fast way without the disadvantages of automatic algorithms.It enables the user to download and process EUV filtergrams (193/195 A) and line-of-sight (Los) magnetograms. It is able to handle data from different spacecraft missions covering the interval from 1996 until now. These are Solar Dynamics Observatory (SDO; Pesnell, Thompson, and Chamberlin, 2012)), the Solar Terrestrial Relations Observatory (STEREO; Kaiser et al., 2008) and the Solar and Heliospheric Observatory (SOHO; Domingo, Fleck, and Poland, 1995). The user can perform coronal hole boundary detection, extraction and analysis using a manually adjustable intensity threshold. Additionally the user can analyze the underlying photospheric magnetic field.
It features a SSW IDL Graphical User Interface (GUI) to efficently analyze coronal holes.
If you have any comments, suggestions or need help. Please contact the author via E-mail (stephan.heinemann@hmail.at) or leave a request here on github.