| Acronym | Meaning |
 | DOE | Department Of The Environment |
| RCS | Reaction Control System / Revision Control System |
| VIB | Vertical Integration Building |
| ECS | Environmental Control System |
| BD | Bonner Durchmusterung (catalog) |
| CCD | Charge-Coupled Device |
| HCMM | Heat Capacity Mapping Mission |
| CEA | Center For EUV Astrophysics |
| GMT | Greenwich Mean Time |
| IOA | Institute Of Astronomy (Cambridge) |
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