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: "Super-Lune du siècle"
    From: Ed Popko
    Date: 2016 Nov 19, 11:58 -0800

    Frank, a point of clarification. You said:

    "Bring the Sun's reflected and direct images together with the reflected image above, limbs perfectly touching. Note this ON-ARC angle. It should be around half a degree. Let's suppose it's 32.1' for a specific example; call that D1."

    When I place the reflected image above the direct image, my readings are always OFF THE ARC, not on-arc as you suggest. Thus, for D1, I subtract my off-arc reading from 60?  Doing this would mean in your example, your original reflected above direct image reading was 27.9' OFF (not on-arc as stated in your post) and D1 is  60-27.9=32.1 as you report.

    Perhaps I did not read your example right but the tests I did on the sun this afternoon shoed reflected above direct were always off-the-arc.

    When reflected is below direct, the angle is on-arc.


    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