Home›Astronomical observatories in Wisconsin›यर्कीज़ वेधशाला🌐हिन्दीEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTürkçeРусскийالعربيةفارسیहिन्दी한국어中文日本語EntityQ14310· pop 36· linked from 370 articlesयर्कीज़ वेधशालाAlso known as 754 YEastronomical observatory in Wisconsin, USAKey factsAlternative names754 YENamed afterCharles YerkesOrganizationYerkes Future FoundationLocationWilliams Bay , Walworth County , WisconsinAltitude334 m (1,096 ft)Websiteyerkesobservatory.orgArchitectHenry Ives Cobb40 inch 102 cm40-inch (102 cm) refractor , Dedicated 189724 inch 61 cmCassegrain reflector , Boller & Chivens10 inch 25 cmCassegrain reflector7 inch 18 cmSchmidt camera12 inchKenwood Refractor ( former )On the mapAvailable in 35 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoहिन्दीBahasa IndonesiaConnectionsGerard KuiperEntityrefracting telescopeEntityCategoriesAstronomical observatories in WisconsinBuildings and structures in Walworth County, WisconsinResearch institutes of the University of Chicago