Under the Stars with Don

Join Don Saturday, October 25 for a Messier Marathon! See the Events page for details.

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.


400 Consecutive Months

The month of April 2008 marked an amazing achievement -- Don has logged 400 consecutive months of systematic comet hunting! That's 400 months in a row in which he has spent at least one hour searching the night sky for comets. Read all about it in the News section.