Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    FW: Suitable sextant
    From: Doug Royer
    Date: 2005 Oct 10, 10:59 -0700



    From: Royer, Doug
    Sent: Monday, October 10, 2005 6:54 PM
    To: 'navugation-l@listserv.webkahuna.com'
    Subject: Suitable sextant


    My recommendation would be to spring for a new or used Astra IIIB with the SPLIT horizon mirror and not the WHOLE horizon mirror. If you're just starting out the whole horizon mirror will make shooting sun sights fairly easy compared to using a split mirror. But it(whole horizon mirror) is almost totally worthless in taking cuts of stars or planets especially from a small, bobbing and rolling vessel.

    A new or good used Astra IIIB gives you good reliability, practical accuracy and service for the money spent for obtaining it. If all you can find before starting your voyage is a whole horizon mirror Astra IIIB get it and use it with confidence. It will just be harder to take cuts of stars because ½ the light from the horizon is reflected away from the sight taker.

    Stay away from plastic sextants is my advice. Not meaning to degrade plastic sextants but because of all the special procedures needed to use one within practical accuracy parameters(especially a novice sight taker)you will have more enjoyment taking the cuts with the better frame and scopes of the Astra than on the best of the plastic sextants(Davis # 25).

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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