Home›Astronomical observatories in La Palma›مقراب غرين🌐العربيةEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaРусскийالعربيةفارسیไทย한국어中文日本語EntityQ59973· pop 37· linked from 375 articlesمقراب غرينAlso known as GranTeCan, GTCreflecting telescope at the Roque de los Muchachos ObservatoryKey factsAlternative namesGranTeCanLocation sLa Palma , Atlantic Ocean , international watersAltitude2,267 m (7,438 ft)Diameter10.4 m (34 ft 1 in)Collecting area78.54 m (845.4 sq ft)Focal length169.9 m (557 ft 5 in)Websitewww .gtc .iac .esvia Wikipedia infoboxWikidata factsArea78.54Elevation2267Diameter10.4Official websitewww.gtc.iac.esOn the mapAvailable in 36 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةAsturianConnectionsUniversity of FloridaEntityMexicoCountryCategoriesAstronomical observatories in La PalmaNational Autonomous University of MexicoReflecting telescopesUniversity of Florida