IMP-8 (IMP-J) was launched by NASA on October 26, 1973 to measure the
magnetic fields, plasmas, and energetic charged particles (e.g.,
cosmic rays) of the Earth's magnetotail and magnetosheath and ...
The DE-1 auroral image data set consists of all mission analysis files (MAFs)
generated at the University of Iowa. Each MAF contains one nadir-centered image
produced by one of the three photometers. ...