Statements (24)
Predicate | Object |
---|---|
gptkbp:instanceOf |
telescope design
|
gptkbp:advantage |
reduced optical aberrations
difficult to manufacture |
gptkbp:commonIn |
amateur astronomy
professional astronomy |
gptkbp:feature |
wide field of view
eliminates coma |
gptkbp:fieldCorrected |
astigmatism and field curvature remain
|
https://www.w3.org/2000/01/rdf-schema#label |
Ritchey–Chrétien reflector
|
gptkbp:introducedIn |
1910
|
gptkbp:inventedBy |
gptkb:George_Willis_Ritchey
gptkb:Henri_Chrétien |
gptkbp:mirrorCount |
two
|
gptkbp:primaryMirrorDiameter |
hyperbolic
|
gptkbp:secondaryMirrorShape |
hyperbolic
|
gptkbp:type |
gptkb:Cassegrain_telescope
|
gptkbp:usedIn |
gptkb:Gemini_Observatory
gptkb:Keck_Observatory gptkb:Very_Large_Telescope gptkb:Hubble_Space_Telescope Subaru Telescope |
gptkbp:bfsParent |
gptkb:Magellan_II_(Clay)_Telescope
gptkb:Magellan_I_(Baade)_Telescope |
gptkbp:bfsLayer |
5
|