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
    App or program to find Hc just from lat, dec and LHA?
    From: Francis Upchurch
    Date: 2015 Dec 4, 07:15 -0800

    To check the accuracy of my Bygrave and BN, I currently need to use the cosine formula with a calculator which is fairly tedious and time consuming. All the sight reduction apps I've seen need you to input sextant sight details etc. They are great for an actual sight reduction, but for a quick check of my my slide rule results, I really just need a quick app or program which gives me Hc from just Lat, Dec and LHA.

    Could any of the experts recommend one or teach me how to program an HP 67 calculator emulator (free app) to do it? (by the way, I'm old enough to remember the HP67 from the late 70s. A dream machine which I could never afford ($600 then!)

    Many thanks

    Francis

       
    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