Ritchey–Chrétien reflector
E3352
A Ritchey–Chrétien reflector is a specialized type of reflecting telescope that uses hyperbolic primary and secondary mirrors to produce a wide, coma-free field of view ideal for professional astronomical imaging.
Aliases (6)
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Cassegrain telescope design
→
reflecting telescope → |
| abbreviation |
RC telescope
→
|
| advantageOverClassicalCassegrain |
better image quality over wide field
→
eliminates off-axis coma → |
| canInclude |
corrector lenses at focus
→
field flattener optics → |
| comparedTo |
classical Cassegrain telescope
→
|
| designDate |
early 20th century
→
|
| designedToCorrect |
coma
→
spherical aberration → |
| fieldQuality |
coma-free over wide field
→
low astigmatism near optical axis → |
| hasDesigners |
George Willis Ritchey
→
Henri Chrétien → |
| hasFocalRatioRange |
approximately f/6 to f/10
→
|
| hasMirrorShape |
concave hyperbolic primary mirror
→
convex hyperbolic secondary mirror → |
| hasOpticalAxis |
shared by primary and secondary mirrors
→
|
| hasOpticalConfiguration |
two-mirror system
→
|
| hasSecondaryMirrorPosition |
Cassegrain focus
→
|
| isCommonDesignFor |
large research telescopes
→
modern optical observatories → |
| isSubtypeOf |
two-mirror anastigmatic telescope design
→
|
| lightPath |
folded optical path through central hole in primary mirror
→
|
| mayProvideFocus |
Cassegrain focus
→
Coudé focus → Nasmyth focus → |
| optimizedFor |
astrophotography
→
professional astronomical imaging → |
| primaryUseEnvironment |
ground-based observatories
→
space-based observatories → |
| provides |
wide field of view
→
|
| requires |
complex mirror figuring
→
precise alignment → |
| supports |
large-format imaging detectors
→
|
| typicalMounting |
altazimuth mount with field derotator
→
equatorial mount → |
| typicalUseCase |
deep-sky imaging
→
space-based observation platforms → wide-field imaging surveys → |
| usedBy |
advanced amateur astronomers
→
professional observatories → space telescopes → |
| usesOpticalElement |
hyperbolic primary mirror
→
hyperbolic secondary mirror → |
Referenced by (21)
| Subject (surface form when different) | Predicate |
|---|---|
|
Baade Telescope
→
Canada–France–Hawaii Telescope ("Ritchey–Chrétien telescope") → European Extremely Large Telescope ("Ritchey–Chrétien telescope") → Gemini North Observatory ("Ritchey–Chrétien telescope") → Gemini South Observatory ("Ritchey–Chrétien telescope") → MPG/ESO 2.2 m Telescope ("Ritchey–Chrétien telescope") → Magellan I → Magellan Telescopes ("Ritchey–Chrétien telescope") → Spitzer Space Telescope ("Ritchey–Chrétien telescope") → Swope Telescope → |
telescopeType |
|
George Willis Ritchey
("Ritchey–Chrétien telescope optical system")
→
Henri Chrétien ("Ritchey–Chrétien telescope design") → |
notableWork |
|
NTT 3.58 m Telescope
("Ritchey–Chrétien design")
→
New Technology Telescope ("Ritchey–Chrétien") → |
primaryMirrorType |
|
Henri Chrétien
("Ritchey–Chrétien telescope")
→
|
coDeveloperOf |
|
George Willis Ritchey
("Ritchey–Chrétien telescope")
→
|
coInvented |
|
Schwarzschild telescope
("Ritchey–Chrétien telescope")
→
|
comparedTo |
|
Cassegrain focus
("Ritchey–Chrétien telescope design")
→
|
componentOf |
|
Dall–Kirkham telescope design
("Ritchey–Chrétien telescope design")
→
|
isComparedTo |
|
Henri Chrétien
("Ritchey–Chrétien telescope")
→
|
knownFor |
|
George Willis Ritchey
("Reflecting Telescope Optics and Construction (articles and reports)")
→
|
notablePublication |