The Observers Notebook- Messier Marathon with Don Machholz

Episode 89 In this episode of the Observers Notebook podcast, host Tim Robertson talks to comet discoverer, Don Machholz. Don discusses the history and how to do a Messier Marathon. You can contact Don at: donm353259@aol.com Don’s Comet website: http://donmachholz.com/ All Arizona Messier Marathon https://www.facebook.com/groups/241449202936274/ For more information you can visit the ALPO web site at: www.alpo-astronomy.org/ You can join the ALPO here: https://store.astroleague.org/index.php?main_page=product_info&cPath=10&products_id=39 You can also support this podcast at Patreon: https://www.patreon.com/ObserversNotebook Listen to the podcast on Soundcloud: https://soundcloud.com/observersnotebook Subscribe on iTunes: https://itunes.apple.com/us/podcast/observers-notebook-the-alpo-podcast/id1199301885?mt=2 I want to thank the Producer of this podcast, Steve Siedentop for his generous support of the Observers Notebook.