Jurgen Stock, (1923 - 2004), was born in Hamburg, Germany, where he received his PH.D. in astronomy in 1951 from Hamburg University. In the early 1950's, Stock, worked at Case Western Reserve University in Cleveland, OH, at the Warner and Swasey Observatory. While there he conducted a photographic photometry study of open clusters, which led to the discovery of several dozen previously unknown sparse clusters in the northern Milky-Way,

Stock was the first director of the Cerro Tololo Inter-American Observatory in Chile. He was instrumental in selecting the observatory site, spending nearly three years in the region, exploring and surveying the nearby mountains, accessable only by horseback. After finally selecting Cerro Tololo, Stock overseen construction of the road to the sumit and the first installations of the observatory itself. His contributions to many areas of astronomy and other sciences played a key role in the development of astronomy in Latin America.



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The amateur astronomer will find a number of his 'Stock' Star Clusters listed on star atlases and observing guides.
While some of the 'Stock' objects are already listed under other catalog designations such as 'NGC', the majority are unique objects, not listed in any other prior catalog. Stock clusters are generally large, sparse, and very faint. Many are not plotted on star atlases. But, they can be found along the Milky-Way in Cassiopeia, Perseus, and Auriga.

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On the left side of the webpage is my personal observation list of the
'Stock catalog of star clusters'.

I currently have all 20 possible objects (from the list of 24) visible from my Pittsburgh, PA latitude of around +40.
(4 of the 'Stock' objects are not observable from latitude +40: Stock13, 14, 15 & 16).

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Hope you enjoyed the visit. Come again soon!
Larry McHenry,   Pittsburgh, PA. USA

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