100-inch Hooker Telescope at Mount Wilson Observatory

E93421
astronomical observatory instrument historical scientific instrument reflecting telescope

The 100-inch Hooker Telescope at Mount Wilson Observatory is a historic reflecting telescope that played a pivotal role in early 20th-century astronomy, including landmark discoveries about galaxies and the expanding universe.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (4)

Label Occurrences
100-inch Hooker Telescope 1
100-inch Hooker Telescope at Mount Wilson Observatory canonical 1
100-inch Hooker telescope 1

Statements (50)

Predicate Object
instanceOf astronomical observatory instrument ⓘ
historical scientific instrument ⓘ
reflecting telescope ⓘ
associatedWithDiscovery A Relation between Distance and Radial Velocity among Extra-Galactic Nebulae ⓘ
surface form: Hubble–Humason velocity–distance relation

evidence for Hubble–Lemaître law ⓘ
extragalactic nature of Andromeda Galaxy ⓘ
builder Mount Wilson Observatory ⓘ
surface form: Mount Wilson Observatory workshop
completedIn 1917 ⓘ
constructionStartDate 1908 ⓘ
country United States of America ⓘ
diameter 100 inches ⓘ
2.5 meters ⓘ
eraOfProminence early 20th century ⓘ
firstLightDate 1917 ⓘ
fundedBy John D. Hooker ⓘ
hasDome rotating steel dome ⓘ
heldWorldsLargestTitleFrom 1917 ⓘ
heldWorldsLargestTitleUntil 1948 ⓘ
heritageDesignation National Historic Landmark ⓘ
surface form: National Historic Landmark (as part of Mount Wilson Observatory)
locatedIn Mount Wilson Observatory ⓘ
San Gabriel Mountains ⓘ
near Pasadena, California ⓘ
mountType equatorial mount ⓘ
namedAfter John D. Hooker ⓘ
notableFor establishing that spiral nebulae are external galaxies ⓘ
measurement of Cepheid variable stars in Andromeda ⓘ
observations leading to discovery of the expansion of the universe ⓘ
observatoryAltitude approximately 1740 meters ⓘ
approximately 5700 feet ⓘ
operatedBy Carnegie Institution of Washington ⓘ
Carnegie Observatories ⓘ
opticalDesign Cassegrain reflector ⓘ
partOf Mount Wilson Observatory ⓘ
surface form: Mount Wilson Observatory telescope collection
primaryMirrorType glass mirror ⓘ
significance key instrument in establishing the scale of the universe ⓘ
pivotal role in development of modern observational cosmology ⓘ
status historical telescope ⓘ
still operational for limited use ⓘ
surpassedBy Hale Telescope ⓘ
surface form: 200-inch Hale Telescope at Palomar Observatory
usedBy Edwin Hubble ⓘ
George Ellery Hale ⓘ
Milton Humason ⓘ
Walter Baade ⓘ
usedFor cosmology ⓘ
extragalactic astronomy ⓘ
observational astronomy ⓘ
photography of deep-sky objects ⓘ
spectroscopy ⓘ
stellar astronomy ⓘ
wasWorldsLargestTelescope true ⓘ

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Walter Baade → notableObservationSite → 100-inch Hooker Telescope at Mount Wilson Observatory ⓘ
George Ellery Hale → notableWork → 100-inch Hooker Telescope at Mount Wilson Observatory ⓘ
this entity surface form: 100-inch Hooker telescope at Mount Wilson Observatory
Edwin Hubble → usedInstrument → 100-inch Hooker Telescope at Mount Wilson Observatory ⓘ
this entity surface form: 100-inch Hooker telescope
Mount Wilson, California → hasStructure → 100-inch Hooker Telescope at Mount Wilson Observatory ⓘ
this entity surface form: 100-inch Hooker Telescope