WSolar telescopeWApollo Telescope MountWBig Bear Solar ObservatoryWCERN Axion Solar TelescopeWDaniel K. Inouye Solar TelescopeWDutch Open TelescopeWEinstein TowerWEuropean Solar TelescopeWFOXSI Sounding RocketWGoode Solar TelescopeWGREGOR Solar TelescopeWHale Solar LaboratoryWHelios (spacecraft)WHerschel wedgeWHinode (satellite)WKodaikanal Solar ObservatoryWMcMath–Hulbert ObservatoryWMcMath–Pierce solar telescopeWMSSTAWRichard B. Dunn Solar TelescopeWSolar and Heliospheric ObservatoryWSolar Dynamics ObservatoryWSolar Maximum MissionWSolar Observatory Tower MeudonWSolar OrbiterWSolar Submillimeter TelescopeWSTEREOWSwedish Solar TelescopeWSwedish Vacuum Solar TelescopeWTRACEWTWINSWUdaipur Solar ObservatoryWVacuum Tower TelescopeWWISPRWX-ray telescopeWYohkoh
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