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
    The Easy Lunars
    From: Charles McElhill
    Date: 2018 Jan 12, 14:08 -0800

    Good afternoon. I looking for some insight from someone who has some familiarity with Frank Reeds method for Easy Lunars. I’ve have followed this just about to the end. But one if the final equations I’m struggling with. The explanation is quite clear but I must have missed a correction

    Corr LD = Obs LD+dh Moon*A+ dh Sun*B+Q   

    For the dh Moon, you go to Alt correction Table 35 -90 d, since Moon’s altitude is 46d 39.5’, the dh should be approx 48.9d.  Adding the average of U and L Corr from the lower portion of the correction table, I get approx a dh Moon of 51.3’. The derivation shows a value of 36.5’.  So I’m convinced I might have missed something somewhere  

    if anyone out there use this procedure, I would greatly appreciate it if they could go back to Frank’s method and let me know where I jumped the fence.  Thanks

    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