| Acronym | Meaning |
 | CTIO | Cerro Tololo Interamerican Observatory |
| SSI | Solid-State Imager / Space Studies Institut |
| PMIRR | Pressure Modulated InfraRed Radiometer |
| MACS | Modular Attitude Control System |
| LARC | Langley Research Center |
| SUSIM | Solar Ultraviolet Spectral Irradiance Monitor |
| CDDT | Countdown Demonstration Test |
| BH | Black Hole |
| CITE | Cargo Integration Test Equipment |
| OGO | Orbiting Geosurvey Observatories |
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