Theophilus, Cyrillus and Catharina form a prominent group of large craters visible on the terminator 5 days after the new moon.
non-profit organization devoted to the amateur astronomer
Welcome to Martz-Kohl Observatory
Informing, educating and inspiring the general public and supporting teaching in the sciences of astronomy and physics.
The Martz-Kohl Observatory is run by the Marshal Martz Memorial Astronomical Association, a not-for-profit voluntary group of people interested in astronomy. The observatory is located in Frewsburg, New York in Chautauqua County, not far from Jamestown and Chautauqua Lake.
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Martz Observatory
