| Acronym | Meaning |
 | ISTS | Institute For Space And Terrestrial Science |
| LASCO | Large Angle Spectrometric Coronograph |
| ET | Ephemeris Time |
| MET | Mission Elapsed Time |
| WD | White Dwarf |
| SAM | Shuttle Activation Monitor |
| WFPC | Wide Field/Planetary Camera |
| ESRO | European Space Research Organisation |
| ACF | Automated Control Function |
| KPNO | Kitt Peak National Observatory |
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