Facility
- RHESSI1
- Registry1
- SAS-11
- SAS-31
- SMM1
- STEREO1
- Siding Springs Observatory SkyMapper Telescope1
- Sierra Nevada Observatory1
- Subaru1
- Subaru telescope1
- Suzaku1
- THEMIS1
- The Large Sky Area Multi-Object Fiber Spectroscopic Telescope1
- Trace Gas Orbiter#TGO1
- UHURU1
- UK Schmidt Telescope (AAO-UKST)1
- UKIDSS1
- ULYSSES1
- Ultraviolet Imaging Telescope1
- VCD developped at LMD1
