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
    Name or NavList Code:
    Re: Pub. 249 vol1
    From: Randall Morrow
    Date: 2014 Jan 2, 11:27 -0800

    Thanks for your help with Pub 249 reduction. Mr. Rudzinski, I had the correct epoch. Mr. Reed, I had indeed used a rounded assumed longitude rather than one that would just subtract out the miutes and seconds as you would with a 229 reduction. This brought the Pub 249 fix (cocked hat center) to within just 3 miles of the GPS fix. The reference to USNO to get the Aries hour angle was also very helpful. My 2014 almanac won't reach me for a week or so. Again, thank you and "Happy New Year".
    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?

    Get a NavList ID Code

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

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

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

    Email Settings

    NavList ID 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