| Acronym | Meaning |
| PSF | Point Spread Function |
| PCT | Photometric Calibration Test |
| HIRS | High Resolution Infrared Radiation Sounder |
| RMCD | Radaiation Monitoring Container Device |
| STSCI | Space Telescope Science Institute |
| MFPE | Misson From Planet Earth |
| JAEL | JSC Avionics Engineering Laboratory |
| MSOCC | Multisatellite Operations Control Center |
| HDE | Henry Draper Extension |
| HJD | Helicentric Julian Date |