| Acronym | Meaning |
 | OTA | Optical Telescope Assembly |
| MITI | Ministry Of International Trade And Industry |
| ESRO | European Space Research Organisation |
| RNGC | Revised New General Catalog |
| SMM | Solar Maximum Mission |
| EUV | Extreme UltraViolet |
| ELV | Expendable Launch Vehicle |
| HDE | Henry Draper Extension |
| OGO | Orbiting Geosurvey Observatories |
| SME | Solar Mesosphere Explorer |
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