NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: My first Lunar
From: Frank Reed
Date: 2008 Aug 02, 21:02 -0400
From: Frank Reed
Date: 2008 Aug 02, 21:02 -0400
Kent, you wrote: "I have now made a comparison between Frank's model and mine and here are the results. In all cases I have used my own way to compensate for oblateness/flattening. By using my data in Frank's modell error in lunar and and error in longitude are read out. [...] So it seems to me that my model is rather good. The deviations are probably that I model e.g. refraction and oblateness/flatness in a different way from Frank." You found deviations as large as 0.6 minutes or arc in the clearing with a standard deviation of 0.3 minutes. That's a lot! Though I certainly can't guarantee it, I believe that my clearing results are accurate to 0.05 minutes of arc so I would say that you still have some things to fix. Even in the year 1790, a discrepancy of 0.6 minutes of arc in clearing a lunar would have been counted as "too large" except as a rough approximation. -FER --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
