New General Catalogue (English Wikipedia)

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doi.org

Dreyer, J. L. E. (1912). "Corrections to the New General Catalogue resulting from the revision of Sir William Herschel's Three Catalogues of Nebulae". Monthly Notices of the Royal Astronomical Society. 73: 37–40. Bibcode:1912MNRAS..73...37D. doi:10.1093/mnras/73.1.37.
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Dreyer, J. L. E. (1878). "A Supplement to Sir John Herschel's "General Catalogue of Nebulae and Clusters of Stars"". Transactions of the Royal Irish Academy. 26: 391–426. Bibcode:1878TRIA...26..381D. JSTOR 30079091.
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Dreyer, J. L. E. (1895). "Index Catalogue of Nebulae found in the years 1888 to 1894, with Notes and Corrections to the New General Catalogue". Memoirs of the Royal Astronomical Society. 51: 185–228. Bibcode:1895MmRAS..51..185D.
Dreyer, J. L. E. (1910). "Second Index Catalogue of Nebulae and Clusters of Stars; containing objects found in the years 1895 to 1907, with Notes and Corrections to the New General Catalogue and to the Index Catalogue for 1888–94" (PDF). Memoirs of the Royal Astronomical Society. 59: 105–198. Bibcode:1910MmRAS..59..105D.
Dreyer, J. L. E. (1912). "Corrections to the New General Catalogue resulting from the revision of Sir William Herschel's Three Catalogues of Nebulae". Monthly Notices of the Royal Astronomical Society. 73: 37–40. Bibcode:1912MNRAS..73...37D. doi:10.1093/mnras/73.1.37.
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Duerbeck, H. W. (2011). "Observing and Cataloguing Nebulae and Star Clusters. From Herschel to Dreyer's New General Catalogue (Steinicke)". Journal of Astronomical History and Heritage. 14 (1): 78. Bibcode:2011JAHH...14Q..78D.

jstor.org

Dreyer, J. L. E. (1878). "A Supplement to Sir John Herschel's "General Catalogue of Nebulae and Clusters of Stars"". Transactions of the Royal Irish Academy. 26: 391–426. Bibcode:1878TRIA...26..381D. JSTOR 30079091.

klima-luft.de

RNGC/IC 2019
Steinicke, W. (17 January 2012). "Revised New General Catalogue and Index Catalogue". Retrieved 2012-04-22.

nasa.gov

heasarc.gsfc.nasa.gov

"NGC2000 - NGC2000.0: Complete New General Catalog and Index Catalog". Goddard Space Flight Center. Archived from the original on 2012-10-20. Retrieved 2012-04-22.

ngcicproject.org

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semanticscholar.org

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Duerbeck, H. W. (2009). "Book Review: Nebel und Sternhaufen - Geschichte ihrer Entdeckung Beobachtung und Katalogisierung (Steinicke)". Journal of Astronomical History and Heritage. 12 (3): 255. Bibcode:2009JAHH...12..255D. doi:10.3724/SP.J.1440-2807.2009.03.10. S2CID 258223761.

web.archive.org

Corwin, H.G. Jr. (12 October 1999). "The NGC/IC Project: An Historical Perspective". The NGC/IC Project. Archived from the original on 10 May 2012. Retrieved 2012-04-22.
"NGC2000 - NGC2000.0: Complete New General Catalog and Index Catalog". Goddard Space Flight Center. Archived from the original on 2012-10-20. Retrieved 2012-04-22.
"Steve Gottlieb's NGC Notes". astronomy-mall. Archived from the original on 26 February 2024. Retrieved 9 April 2024.

webbdeepsky.com

"Monograph No. 1 - The "Non-Existent" Star Clusters of the RNGC". Webb Deep-Sky Society. Retrieved 29 May 2017.