Messier Marathon is a program that calculates an observation plan for a Messier Marathon including the positions in RA/Dec and Alt/Az for your location and the intended time. I use this program for the preparation of Messier Marathons in November and particularly in the end of March.
License Free
File Size 131.53 kB
Operating System Windows XP Windows Windows Me Windows 2000 Windows 95 Windows 98 Windows NT