| ASCII | American Standard Code for Information Interchange | |
| AOT | Astronomical Observation Template | |
| CAM | ISO instrument: camera | |
| Co-I | Co-Investigator | |
| ESA | European Space Agency | |
| ESTEC | European Space Research and Technology Centre | |
| ftp | file transfer protocol | |
| GMT | Greenwich Mean Time | |
| HST | Hubble Space Telescope | |
| ID | Identification | |
| IDUM | ISO Data Users' Manual | |
| IPAC | Infrared Processing and Analysis Center | |
| IRAS | Infra-Red Astronomical Satellite | |
| IRPSS | ISO Remote Proposal Submission Software | |
| IRSKY | InfraRed Sky, a software programme from IPAC | |
| ISAS | Institute of Space and Astronautical Science | |
| ISO | Infrared Space Observatory | |
| ISOCAM | ISO instrument: camera | |
| ISOPHOT | ISO instrument: imaging photo-polarimeter | |
| LWS | ISO instrument: long wavelength spectrometer | |
| NASA | National Aeronautics and Space Administration | |
| OBSID | Observer Identification | |
| OTAC | ISO Observing Time Allocation Committee | |
| PGA | Proposal Generation Aids (software) | |
| PH | Proposal Handling (software) | |
| PHT | ISO instrument: imaging photo-polarimeter | |
| PI | Principal Investigator | |
| RPSS | Remote Proposal Submission System, developed by STScI | |
| SOC | Science Operations Centre | |
| SOT | Science Operations Team | |
| STScI | Space Telescope Science Institute | |
| SWS | ISO instrument: short wavelength spectrometer | |
| TDT | Target Dedicated Time | |
| ToO | Target of Opportunity | |
| URL | Universal Resource Locator | |
| WWW | World Wide Web |