Under the Stars with Don

Take Don's class, "Astronomy and Stargazing" starting February 4. See the Events page for more info.


Downloads

Download a free copy of Don's book, A Decade of Comets.
(24.5 MB Word document)

Download Don's comet hunting spreadsheet.
(32k Excel document)

Photo of Don at his telescope

Welcome to TheCometHunter.com

A website devoted to the discoveries of world-renowned comet hunter, Don Machholz. Find out how Don found each of his comets, view a dizzying array of cometary photographs, and find info on upcoming astro events with Don himself.


Read Don's True-Life Tales of Discovery!

Over the last few decades, Don has managed to discover a record-setting ten comets. Check out the Comet Discoveries page to get the behind-the-scenes details of these amazing discoveries.