Instrument
- UIT2
- UKST1
- USNO Robotic Astrometric Telescope1
- VIMOS5
- VIMS1
- VISIR, T-ReCS, Michelle, COMICS, IRAC, IRS, MIPS, IRAS2
- VLT1
- VSOP with HALCA2
- VST1
- Various Meteor Cameras2
- WFC1
- WFC36
- WFPC11
- WFPC25
- WPFC21
- William Herschel Telescope1
- Wolf's 15cm Doppelastrograph Königstuhl1
- Wolf's 15cm Doppelastrograph Märzgasse1
- XAO 1M-WideField1
- YSO Double Astrograph2
