| Acronym | Meaning |
| PMT | PhotoMultiplier Tube |
| CITA | Canadian Institute For Theoretical Astrophysics |
| WFPC | Wide Field/Planetary Camera |
| HIRS | High Resolution Infrared Radiation Sounder |
| AAVSO | American Association Of Variable Star Observers |
| RASC | Royal Astronomical Society Of Canada |
| EODC | Earth Observation Data Centre |
| CM | Central Meridian |
| DARPA | Defense Advanced Research Projects Agency |
| CSA | Canadian Space Agency |