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: Additional altitude correction for Venus
    From: Frank Reed
    Date: 2015 May 14, 18:29 -0700

    Stan,

    Well, it's interesting, yes, but I don't think this is really "resolved" (and in the interest of continuity, I've dropped that word from the subject). The explanation describes a factor of k·cos(theta), but the angle theta depends on the observing circumstances so how could they include it in a generic altitude correction table? Something's fishy. This offset for phase really belongs in the celestial coordinates themselves, which I believe is what they do today, or it could be put in a separate calculation or a small table entered with theta, if it's going to be used at all. At least the values of k seem to be in agreement with the model I described earlier today, so that's encouraging.

    Frank Reed

       
    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