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: Digital Image CN Exercise
    From: Greg Rudzinski
    Date: 2010 Apr 4, 14:50 -0700

    Marcel,

    Go To Chart Web Sight:

    http://www.charts.noaa.gov/OnLineViewer/18720.shtml

    Zoom and print a working copy for Latitude 34�10' North ; Longitude 119�14' West (A.P.)


    Sun Almanac Data for 3 April 2010 UTC 01:57:41

    GHA 208� 34'
    DEC 5� 13.0' North

    Image Altitude for Sun Upper Limb:
    (2468 pixels) x (.097' per pixel) = 239.4' = 3� 59.4' Hs

    Altitude Corrections:
    Semi Diameter -16'
    Refraction -11.7'
    Dip -3.5'
    Total Correction = -31.2'
    Observed Altitude (Ho) = 3�28.2'

    This should get you rolling.

    GRudzinski

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