Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:telescope_design
|
| gptkbp:advantage |
reduced off-axis optical errors
|
| gptkbp:category |
gptkb:astronomer
|
| gptkbp:corrects |
coma
spherical aberration |
| gptkbp:establishedIn |
early 20th century
|
| gptkbp:fieldOfView |
wide
|
| gptkbp:inventedBy |
gptkb:George_Willis_Ritchey
gptkb:Henri_Chrétien |
| gptkbp:mirrorType |
two-mirror system
|
| gptkbp:namedAfter |
gptkb:George_Willis_Ritchey
gptkb:Henri_Chrétien |
| gptkbp:notableFeature |
compact design
no coma at focal plane |
| gptkbp:opticalDesign |
gptkb:Cassegrain_reflector
|
| gptkbp:primaryUse |
gptkb:astronomer
|
| gptkbp:usedBy |
amateur astronomers
professional observatories |
| gptkbp:usedIn |
gptkb:Gemini_Observatory
gptkb:Keck_Observatory gptkb:Very_Large_Telescope gptkb:Hubble_Space_Telescope Canada-France-Hawaii Telescope |
| gptkbp:usesPrimaryMirrorShape |
hyperbolic
|
| gptkbp:usesSecondaryMirrorShape |
hyperbolic
|
| gptkbp:bfsParent |
gptkb:Bicentennial_Hall_Observatory
|
| gptkbp:bfsLayer |
5
|
| http://www.w3.org/2000/01/rdf-schema#label |
Ritchey-Chrétien telescope
|