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: Sunset sight?
    From: Lynn H. Ogden
    Date: 1998 Oct 29, 18:32 EST

    -- [ From: Lynn H. & Kathy Ogden * EMC.Ver #2.5.3 ] --
    I guess what we need to do here is define terms.  Positioning to me
    equals fix or similar.  Chuck is correct that using such a technique is
    useful in "life boat navigation", but life boat navigation tell you
    weather your closer to North America or Europe and which way to row. ;-)
     It's not something I'd want to use as my basis in making decisions in
    making a land fall.  Likewise, some believe that a two body fix is also
    not accurate enough for making land fall.  That's not to say that it
    hasn't been done.
    To answer your question about "how close":  It depends on your ability
    to allow for the variables.
    -------- REPLY, Original message follows --------
    Date: Thursday, 29-Oct-98 01:00 PM
    From: Richard Edwards          \ Internet:    (richard@XXX.XXX)
    To:   Lynn H. & Kathy Ogden    \ PRODIGY:     (VJJN45A)
    Subject: Re: [Nml] Sunset sight?
    On Oct 28,  9:15pm,  LYNN H OGDEN wrote:
    > Subject: Re: [Nml] Sunset sight?
    > -- [ From: Lynn H. & Kathy Ogden * EMC.Ver #2.5.3 ] --
    > It's possible, but not likely.  There are too many variables created
    > atmospheric conditions, refraction, and estimating semi-diameter and
    > when that semi-diameter is on the horizon.
    How about in an emergency situation?  How close could you come to a
    > Now azimuth or amplitude of the Sun is easy to find so that you may
    > correct your compass, but positioning is near impossible.
    > Subject: [Nml] Sunset sight?
    > Would it be possible to find position (or at least longitutde),
    > a sextant by marking the time at sunset and going to the tables with 0
    > degrees as the altitude?
    >-- End of excerpt from  LYNN H OGDEN
    -------- REPLY, End of original message --------
    =-=  TO UNSUBSCRIBE, send this message to majordomo@XXX.XXX:     =-=
    =-=      unsubscribe navigation                                         =-=

    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