| Acronym | Meaning |
 | FAP | Freedom Attached Payloads |
| ATO | Abort To Orbit |
| APE | Auroral Photography Experiment |
| ACR | Active Cavity Radiometer |
| BBXRT | Broad-Band X-Ray Telescope |
| BC | Bolometric Correction |
| IOC | In-Orbit Checkout And Calibration |
| STSDAS | Space Telescope Science Data Analysis System |
| EOS | Earth Observing System |
| BATSE | Burst And Transient Source Experiment |
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