2.4.0 spase://NASA/Catalog/STEREO/SECCHI/Cor2/CACTus STEREO SECCHI Cor2 Automated CME Catalog 2022-02-24T12:34:56.789 2022-02-24T12:34:56.789 STEREO SECCHI: Initial SPASE XML resource description submission. Metadata submitted by A. Vourlidas on 2022-02-19, reviewed by LFB Computer Aided CME Tracking, CACTus, autonomously detects coronal mass ejections, CMEs, in image sequences from LASCO or SECCHI. The output of our software is a list of events, similar to the classic catalogs, with principle angle, angular width and velocity estimation for each CME. In contrast to catalogs assembled by human operators, these CME detections by software can be faster, which is especially important in the context of space weather, and possibly also more objective, as the detection criterion is written explicitly in a program. However, the algorithm is not perfect so there are sometimes false detections. This CME list is automatically generated. There is no human intervention or supervision at this time. Therefore we ask you to use caution when using the data for statistical purposes. Please note that all of the SECCHI data is free for public use, but if you use them in presentations, published work, websites, etc, please give the appropriate image credits ("STEREO/SECCHI" will usually suffice). Robbrecht, E., S. Patsourakos, and A. Vourlidas 2009-02-01T00:00:00 The Astrophysical Journal NASA STEREO spase://SMWG/Person/Brian.Wood PrincipalInvestigator 2020-01-01T00:00:00 spase://SMWG/Person/Angelos.Vourlidas MetadataContact ProjectScientist 2007-01-01T00:00:00 spase://SMWG/Person/William.T.Thompson GeneralContact spase://SMWG/Person/Lynn.Hutting TechnicalContact 2008-02-01T00:00:00 spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact CACTus Algorithm Description https://iopscience.iop.org/article/10.1088/0004-637X/691/2/1222 The paper describes the algorithm and its application on the SOHO LASCO C2 and C3 images but the process is essential identical for the STEREO Cor2 coronograph images. Robbrecht, E., D. Berghmans, and R.A.M. Van der Linden, Automated LASCO CME Catalog for Solar Cycle 23: Are CMEs Scale Invariant?, Astrophys. J., 691(2), 1222-1234, 2009. en spase://SMWG/Repository/NRL Online Open NRL SECCHI Site https://secchi.nrl.navy.mil/cactus/ en IDL HTML When any of this data is used, please cite one of the following publications: * Robbrecht E., and D. Berghmans, Automated recognition of coronal mass ejections (CMEs) in near-real-time data, Astron. Astrophys., 425(3), 1097-1106, 2004 (https://www.aanda.org/10.1051/0004-6361:20041302) * Stenborg, G., Vourlidas, A., and R.A. Howard, A Fresh View of the Extreme-Ultraviolet Corona from the Application of a New Image-Processing Technique, Astrophys. J., 674(2), 1201, 2008 (https://iopscience.iop.org/article/10.1086/525556) spase://SMWG/Instrument/STEREO-A/SECCHI/Cor2 spase://SMWG/Instrument/STEREO-B/SECCHI/Cor2 CoronalMassEjection