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
    or...
       
    Reply
    Re: Longitude from Local Apparent Noon Altitudes
    From: Antoine Couëtte
    Date: 2012 Aug 19, 20:56 -0700

    Thanks for your reply, Bruce


    I am happy that we got other contributor's positions from Greg, Hewitt and Peter.

    Will you come up also, Andrés also with your own results (error ellipse) ?

    Would you mind, Bruce, if possible giving us a more accurate position about your actual location - using Google Earth for example.

    Google Earth indicates that N42°04' W070°10' is slightly North of what seems to be Rt 6, while you were apparently definitely south of Rt 6.

    You LAN observations results are quite nice. Latitude is certainly more reliably determined than Longitude here, as is always the case. Any improvement/tightening in the dispersion of the sights will definitely help finding a more accurate position. Indicating also pressure and temperature will also (marginally) help into getting a better tuned position.

    Thanks again and Best Regards

    Kermit

    **************************************************************************

    Hello:

    If you look at an aerial of Provincetown ,MA, Snail Road leaves Rt 6 and goes toward bay. Snail Road meets 6A. I was just 300-400 ft east of there standing on a sun bathing deck adjacent to the water.Actually, the deck overhangs the beach/water at high tide. This location is directly north of the point you determined.

    From "eyeballing data" and folding graph, I guesstimated UT of 16h43m56sec.

    Based on an online calculator, the sun deck location is N 42 04' W 070 10'. Your analysis...very well done!

    My "analysis" gave me N 42 06 W 70 00.......learning!

    Thanks all

    Bruce

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

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

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

    Email Settings

    Posting 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