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: DeltaT fits, WAS: Sun Moon Lunars to 155 degrees
    From: Antoine Couëtte
    Date: 2010 Apr 3, 14:39 -0700

    Thank you Peter,

    These delta-T fits are the ones I have use for the past 6 months or so.

    They are claimed to be accurate within 1 second of time or so. Anyway, Jean Meeus uses them for his Canon of Solar Eclipses which he recently computed and published jointly with an Astronomer from NASA. If Jean Meeus uses them, do not hesitate : do exactly the same as he does !

    For the future ... we will see. Just in case, I suggest that you prompt for your computed delta-T value at some point in your calculations and if you R/S without entering anything, such already prompted value is to be used. If you manually enter any different value then - just to cover the possible future case you just mentionned - such manually entered value will be used instead.

    Enjoy !

    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com

    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