Observing Guide to the Messier Marathon A Handbook and Atlas

Don Machholz is an amateur astronomer living in Colfax, California. He is an active comet hunter, and has discovered nine comets that now bear his name. He was the Comets Recorder for the Association of Lunar and Planetary Recorders for twelve years. A keen writer, Don was the author of a monthly astronomy column for twenty-two years, and has also written numerous astronomy articles for local newspapers and radio stationsMachholz, Don is the author of 'Observing Guide to the Messier Marathon A Handbook and Atlas' with ISBN 9780521803861 and ISBN 0521803861.