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: Time of meridian passage accuracy
    From: Antoine Cou�tte
    Date: 2009 Sep 30, 23:10 -0700

    Dear GL,
    
    
    
    When you state : "and all sextant corrections have been applied so the values 
    stated are the observed altitudes", do you mean that the heights you indicate 
    have been corrected :
    
    (1) just for "sextant" corrections, in which case when assuming that such 
    corrections have been made, we still need to go with Dip, Refraction, 
    Semi-Diameter and parallax corrections. What is height of eye then (for dip), 
    assuming that the refraction correction is supposed to be performed under 
    standard temperature and pressure conditions  ?
    
    or rather :
    
    (2) already corrected for the remaining "height" corrections (listed 
    hereabove), so that the heights you published are to be considered as 
    "Geocentric" heights ?
    
    I am asking because I am not quite familiar with the "Ho" indication you are 
    referring to. If you were specifying for example - if such were the case - 
    that the listed heights are "Geocentric", I would feel that such wording 
    would be totally - and internationnally  :-)    - unambiguous.
    
    Thank you for your Kind Attention and reply
    
    
    Antoine
    
    
    Antoine M. "Kermit" Couette
    
    
    --~--~---------~--~----~------------~-------~--~----~
    NavList message boards: www.fer3.com/arc
    Or post by email to: NavList@fer3.com
    To unsubscribe, email NavList-unsubscribe@fer3.com
    -~----------~----~----~----~------~----~------~--~---
    
    

       
    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