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
    Re: Visual satellite position fix
    From: Tom Sult
    Date: 2013 Aug 12, 16:03 -0500
    Several years ago on a blue water crossing I used the International space station as one of my celestial bodies. I was quite smitten with myself. I recited the time of passage of 5 stars as it streaked across the sky.  Then used each point advancing as time and distance passed to calc a fix. I used star walker for data. 

    Tom Sult
    Sent from my iPhone

    On Aug 12, 2013, at 13:29, Frank Reed <FrankReed@HistoricalAtlas.com> wrote:


    Last evening I stepped outside to watch an Iridium flare. Within five minutes I saw five other satellites (unexpected). Using a pair of binoculars I recorded the positions of two of them relative to moderately bright stars and also the time to the nearest few seconds. Back at my computer, comparing against predicted satellite positions, I had no problem fixing my position within about five nautical miles. I've discussed this before at length, but I just wanted to remind folks that you CAN get a satellite position fix visually with only minimal equipment (binoculars and a basic star chart). The downside is that it depends on a "DR" position (within a degree or two) and it requires Internet access at least within the past ten days or so in order to get good satellite orbital elements. This method requires some practice, but it's much simpler than traditional celestial navigation.

    -FER

    ----------------------------------------------------------------
    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
    ----------------------------------------------------------------

    : http://fer3.com/arc/m2.aspx?i=124844

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a 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