From the January 2009 issue

Binocular Universe web extra: Messier bino-thon finding sequence

Take along this catalog checklist to help you complete your marathon.
By | Published: January 26, 2009 | Last updated on May 18, 2023
Planning on running the Messier bino-thon this year? Great! But before you can begin, it’s absolutely essential that you enter the marathon with a finding sequence. Which object do you look at first? What’s up next? And which have already been seen?