A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding
From: Eamonn Sparling
Date: 2017 Oct 8, 16:38 -0700
I am new to Astro nav and I like to use pub. no. 229. I think I understand how and when to apply double second
difference, I will probably never need to. My curiosity relates to understanding the concepts supporting DSD
and what is he relationship between the DSD and the required (extra) increment value of Hc. This is not intuitive to me.
I would like if the forum could explain this mechanism, or direct me to the maths behind this concept.
Thank you, E.S.