| Acronym | Meaning |
| OTA | Optical Telescope Assembly |
| CONTAM | Contaminate |
| DHS | Discrete Horizon Sensor |
| FQI | Flight Qualification Instrumentation |
| GP | GeGP General Publication (RSC) |
| CIRHS | Critical Items And Residual Hazards List |
| FMR | Field Modification Request |
| DF | Development Flight |
| EOP | Experiments Of Opportunity |
| SYNC | Synchronize |