The "COR1 Observers Log" are updated daily by Bill Thompson, and they represent a top-level view of COR1 activity and data return from each spacecraft.


The "COR1 Preliminary Events List" was generated by O. C. St. Cyr prior to September 2007, and is being maintained now by Hong Xie. It represents the next level of detail. Events from both the Behind and the Ahead spacecraft are noted. Entries include the number of images obtained each day, and over what time span. The time and rough location of coronal mass ejections (CMEs) are noted, as well as potential events (CME?), downflows, polar jets, stars, possible space debris (likely to be flaking MLI), etc.

[+] 2016

[+] 2015

[+] 2014

[+] 2013

[+] 2012

[+] 2011

[+] 2010

[+] 2009

[+] 2008

[+] 2007

[+] 2006

This is a preliminary CME rate plot based on a review of the STEREO SECCHI COR1 images. The rate (about one CME every two days) is indicative of solar activity minimum conditions. The plot will be updated periodically.

CMEs detected and measured in the SOHO LASCO instrument are catalogues by Seiji Yashiro and can be seen at: