NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: It's Moon-landing Monday
From: Frank Reed
Date: 2009 Jul 24, 00:01 -0700
From: Frank Reed
Date: 2009 Jul 24, 00:01 -0700
Greg, you wrote: "Orbiting Moon satellites could be used to check spacecraft velocity/ position using doppler shifts of reflected light. Would a spectroscope be of any use for this?" A check on speed would be by far the most useful observation since "dead reckoning" (actually numerical integration, but fundamentally the same thing) works beautifully outside the atmosphere. I can't think of any non-electronic spectroscopic method that would work. -FER --~--~---------~--~----~------------~-------~--~----~ NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---