Ritchey–Chrétien telescope

specialized Cassegrain telescope
Thing general Q1062138
Ritchey–Chrétien telescope
Kowloonese at English Wikipedia · Public Domain · Wikimedia
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Summary

Ritchey–Chrétien telescope ranks in the top 2% of general entities by monthly Wikipedia readership (139 views/month).[1]

Key Facts

  • Ritchey–Chrétien telescope is credited with the discovery of George Willis Ritchey[2].
  • Ritchey–Chrétien telescope is credited with the discovery of Henri Chrétien[3].
  • Ritchey–Chrétien telescope's image is recorded as RitcheyTelescope.jpg[4].
  • Ritchey–Chrétien telescope's image is recorded as NOFS 40inch03.jpg[5].
  • George Willis Ritchey is named after Ritchey–Chrétien telescope[6].
  • Henri Chrétien is named after Ritchey–Chrétien telescope[7].
  • Ritchey–Chrétien telescope's subclass of is recorded as Cassegrain reflecting telescope[8].
  • Ritchey–Chrétien telescope's Commons category is recorded as Ritchey-Chrétien telescopes[9].
  • +1910-01-01T00:00:00Z marks the founding of Ritchey–Chrétien telescope[10].
  • Ritchey–Chrétien telescope's Freebase ID is recorded as /m/01cwb_[11].
  • Ritchey–Chrétien telescope's NE.se ID is recorded as ritchey-chretien-teleskop[12].
  • Ritchey–Chrétien telescope's Unified Astronomy Thesaurus ID is recorded as 1403[13].
  • Ritchey–Chrétien telescope's schematic is recorded as Diagram Reflector RitcheyChretien.svg[14].
  • Ritchey–Chrétien telescope's Microsoft Academic ID is recorded as 2779657097[15].
  • Ritchey–Chrétien telescope's Lex ID is recorded as Ritchey-Chrétien-teleskop[16].

Body

Works and Contributions

Credited discoveries include George Willis Ritchey[2], an astronomer[17], 1864–1945[18], of United States[19], awarded the Prix Jules Janssen[20], specialised in astronomy[21] and Henri Chrétien[3], an astronomer[22], 1879–1956[23], of France[24], awarded the Prix Jules Janssen[25].

Why It Matters

Ritchey–Chrétien telescope ranks in the top 2% of general entities by monthly Wikipedia readership (139 views/month).[1] It has Wikipedia articles in 21 language editions, a strong signal of global cultural recognition.[26] It is known by 24 alternative names across languages and contexts.[27]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [4] ↑ . wikidata.org.
  2. [5] ↑ . wikidata.org.
  3. [2] ↑ . wikidata.org.
  4. [3] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . Freebase Data Dumps. wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.

Inline context (facts about related entities)

  1. [17] ↑ . Wikidata. wikidata.org. → on this site
  2. [18] ↑ . Wikidata. wikidata.org. → on this site
  3. [19] ↑ . Wikidata. wikidata.org. → on this site
  4. [20] ↑ . Wikidata. wikidata.org. → on this site
  5. [21] ↑ . Wikidata. wikidata.org. → on this site
  6. [22] ↑ . Wikidata. wikidata.org. → on this site
  7. [23] ↑ . Wikidata. wikidata.org. → on this site
  8. [24] ↑ . Wikidata. wikidata.org. → on this site
  9. [25] ↑ . Wikidata. wikidata.org. → on this site

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [26] ↑ . Wikidata sitelinks. wikidata.org.
  3. [27] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Ritchey–Chrétien telescope. Retrieved October 13, 2026, from https://4ort.xyz/entity/ritchey-chr-tien-telescope
MLA “Ritchey–Chrétien telescope.” 4ort.xyz Knowledge Graph, 4ort.xyz, 13 Oct. 2026, https://4ort.xyz/entity/ritchey-chr-tien-telescope.
BibTeX @misc{4ortxyz_ritchey-chr-tien-telescope_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Ritchey–Chrétien telescope}}, year = {2026}, url = {https://4ort.xyz/entity/ritchey-chr-tien-telescope}, note = {Accessed: 2026-10-13}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Ritchey–Chrétien telescope — https://4ort.xyz/entity/ritchey-chr-tien-telescope (retrieved 2026-10-13)

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