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: Site reduction assisted by spreadsheet?
    From: Greg Rudzinski
    Date: 2013 May 7, 12:34 -0700

    Samuel,

    Try this calculator for sight reduction. Save it to your laptop desk top for future calculations. Remember that the Z rules apply.

    North Latitude if LHA is > 180* then Zn = Z if LHA < 180* then Zn = 360*- Z

    South Latitude if LHA is > 180* then Zn = 180 - Z if LHA < 180* then Zn = 180* + Z

    Zn = true azimuth

    Save the Nautical Almanac 2013 and increments to your laptop desk top if you do not have one on hand.

    Greg Rudzinski

    Site reduction assisted by spreadsheet?
    From: Samuel
    Date: 2013 May 7, 03:55 -0700
    I'm new to celestial navigation having recently purchased a Davis Mark 25 sextant and wanting very much to be able to do both a sun sight reduction and a intercept plot.

    Presently, I'm experimenting with spreadsheets obtained from https://www.navigation-spreadsheets.com/ but find that it is necessary to use several spreadsheets to obtain the figures for the intercept plot. (Also, the format for entering angle readings is tedious).

    It would be more efficient to use only one spreadsheet for a sight reduction.

    Can you direct me toward one such spreadsheet?


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

    File:



    File:

      

    File:



    File:

      

       
    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