NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Pike
Date: 2016 Oct 14, 12:14 -0700
David, What are you trying to tell us? I have been baking my own bread for 13 years and never heard anybody mentioning v-corrections in that context. These are a peculiar feature of the NA required by its interpolation tables, and if you don't use those, of course you won't need v-corrections. But if you ever do use the NA to reduce a planet observation, please be sure to understand them. Herbert
Well that’s a relief. I really was beginning to wonder if I’d been doing it wrong all those years. However, I’ve just waded through all 909 pages of the current US Air Almanac and was unable to find one mention of ‘v correction’, so that explains it. The ten minute spacings must make it unecessary. Incidentally, it still contains some great star diagrams and duration of twilight diagrams. Unfortunately, it’s not easily available in the UK except on-line, and if it was, it must weigh a ton. DaveP
