HK_Project_v1995_NSO

This dataset is for the historic Mount Wilson Observatory HK Project, which aimed at studying stellar chromospheric activity and variability. What appears to be a complete, calibrated, and self-consistent copy of the processed data for almost 2300 HK Project stars, from 1966 to mid-1995, was found during 2015 at the National Solar Observatory. To distinguish the present data from any other versions that may be circulating among the community, we request that the 1995 files be designated as “HK_Project_v1995_NSO”