Statements (24)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
telescope design
|
| gptkbp:advantage |
compact design
long effective focal length |
| gptkbp:category |
optical instruments
reflecting telescopes |
| gptkbp:focusesLightTo |
hole in primary mirror
|
| https://www.w3.org/2000/01/rdf-schema#label |
Cassegrain reflector
|
| gptkbp:introducedIn |
1672
|
| gptkbp:inventedBy |
gptkb:Laurent_Cassegrain
|
| gptkbp:lightPath |
folded
|
| gptkbp:namedAfter |
gptkb:Laurent_Cassegrain
|
| gptkbp:primaryMirrorDiameter |
paraboloid
|
| gptkbp:secondaryMirrorShape |
hyperboloid
|
| gptkbp:usedFor |
astronomer
radio telescopes optical telescopes |
| gptkbp:uses |
concave primary mirror
convex secondary mirror |
| gptkbp:variant |
gptkb:Dall-Kirkham_telescope
gptkb:Schmidt–Cassegrain_telescope gptkb:Ritchey–Chrétien_telescope |
| gptkbp:bfsParent |
gptkb:Herschel_Space_Observatory
gptkb:Hooker_Telescope |
| gptkbp:bfsLayer |
5
|