| Acronym | Meaning |
 | NSO | National Solar Observatory |
| COBE | COsmic Background Explorer |
| COSTAR | Corrective Optics Space Telescope Axial Replacement |
| DSS | Deep Space Station |
| IOA | Institute Of Astronomy (Cambridge) |
| RAS | Royal Astronomical Society |
| AIPS | Astronomical Image Processing System |
| AAVSO | American Association Of Variable Star Observers |
| OMDP | Orbiter Maintenance Down Period |
| BFC | Backup Flight Computer |
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