In 1966, Polish Mieczyslaw Czernik, (1933 - 1991), of the Warsaw University Observatory and Astronomical Institute
created a catalog of 45 open star clusters based on a study of the images of the Palomar Sky Atlas.
On the left side of the webpage is my personal observation list of the
'Czernik catalog of star clusters'.
I have observed all possible 41 objects visible from my Pittsburgh, PA latitude of around +40.
(for some reason four objects: #33, 35, 36, & 37 are missing from the observing list. Object #34 is a galaxy).
Hope you enjoyed the visit. Come again soon!
Larry McHenry, Pittsburgh, PA. USA