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
    Custom Compact Sight Reduction Tables
    From: Greg Rudzinski
    Date: 2020 Mar 9, 15:13 -0700

    Attached are my current prefered on the go light weight sextant box set of sight reduction tables . The base table is a 53 page paperback reprint of Martelli tables. Tucked into the front inside dust jacket are:

    Natural haversines 1', Ageton Classic (Combined Ageton and natural sin cos tables), Pub 249 table 4 long term Sun almanac, Arc to time, Ix azimuth graph. Tucked in the back dust jacket is the much more useful local hour angle Martelli table 5. The front of the dust jacket is full of shorthand formulae and an ex-meridian table. Pretty ugly to look at but dont judge a table by it's cover. What I get out of this are 9 different non-electronic ways to perform sight reduction.

    1. Law of Cos by Logs

    2. Hav Doniol

    3.Ageton

    4. Law of Cos by Otis King slide rule

    5.Ex-meridian by pocket slide rule

    6.Time Sight

    7. Sumner LOP

    8. Longitude by Equal Altitude

    9. LAN

    Greg Rudzinski

    File:


    File:


    File:


       
    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