| A | B |
|---|
| CDS | detects emission lines |
| CELIAS | samples solar wind and energetic ions |
| COSTEP | detects and classifies very energetic particle populations |
| EIT | provides full disc images of sun |
| ERNE | measures high energy particles |
| GOLF | studies internal structure of sun |
| SUMER | detailed spectroscopic plasma diagnostics |
| SWAN | observes sky not the sun |
| UVCS | measures in UV light of corona |
| VIRGO | solar intensity oscillations |
| LASCO | observes outer solar atmosphere |
| MDI | records vertical motion of sun's surface |
