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
    Name or NavList Code:
    Email:
       
    Reply
    Latitude by photo star trails
    From: Frank Reed
    Date: 2026 Jun 29, 19:29 -0700

    In less than twelve hours, if all goes according to plan, the last flying Lockheed L-1011 will take off from Kwajalein Atoll in the Pacific Ocean (the largest atoll in the world, home to a US military base among the Marshall Islands). It is an air-launch platform for small satellites that is nearly out-of-business. This is almost certainly the last flight of this last L-1011. Read about the unusual mission on space.com here.

    In the article, there is a photo of star trails. Simple question: what was the latitude of the airport where this time-exposure photo was taken? Was it on Kwajalein Island? Or Wallops Island in Virginia? Or somewhere else?

    After you get the latitude, you might consider another question: is the photo consistent with recent photography? You can read the approximate Sidereal Time (equivalent to LHA Aries) from the photo. And the sky suggests evening or morning twilight. That should tell us the date. Does it match the end of June??

    I have not checked either of these issues! I'm just suggesting that these are the sorts of things that the photo should be able to tell us. :)

    Frank Reed
    PS: There is a surprising "hazard to navigation" also located at Kwajalein Atoll: a witness to the sinking of HMS Hood in 1941.

    File:


       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join / Get NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    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:

    Email Settings

    NavList ID 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