Welcome to the NavList Message Boards.

NavList:

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

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re:Moonrise-over-Connecticut
    From: Antoine Couëtte
    Date: 2021 Nov 5, 01:15 -0700

    Good Day to you Bill,

    You recently wrote "The ICE refraction corrections for Sun and Moon of -34.0' seem correct for the lower limbs, whilst the -31.0' in Frank's USNO clone seem correct for the body centers."

    This statement is true as regards the numbers themselves taken out of their own environment.

    I would rather think that your remark is the result of pure chance.

    As earlier shown, it looks like the -31.0' value you are quoting is rather the Inverse Refraction value for the Sun Hc at -0°15.2'.

    Best Navigational Regards,

    Antoine M. "Kermit" Couëtte

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    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:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    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