Donald Machholz

Machholz in November 2019 Donald Edward Machholz (October 7, 1952 – August 9, 2022) was an American amateur astronomer who was credited with the discovery of 12 comets that bear his name. Provided by Wikipedia
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    The observing guide to the Messier marathon: A handbook and Atlas
    by Machholz, Don
    Published 2002
    Printed Book
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