Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: V-Correction for Sun? Answer from UKHO...
    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

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site