John Flannery has produced a great resource for all Messier Marathon fans.

Sincere thanks to John Flannery for his great work in editing (and writing a huge amount) of this Charts & Notes guide to the Messier Marathon and other nice things in the sky this weekend! The file is 2.7mb and is 47 pages of Astronomy gold. All original writers work acknowledged. It is available on our Messier Marathon Support Page at Kerrydarkskytourism.com