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
    Re: Historical question
    From: Frank Reed CT
    Date: 2004 Oct 24, 03:11 EDT
    Alex E wrote:
    "In general, the book makes an impression that altitudes are taken with a "good Quadrant", while a sextant is only for the lunar distances."

    Yep. Sextants were carefully controlled. You didn't want a junior officer dropping the damn thing. If they dropped an octant, well, you can dock his pay, but without the sextant, lunars would be impossible. Sextants were invented for lunars. The ability to read large angles, the ability to read angles to 10 arcseconds, the presence of a powerful telescope... these are all features required for lunars but irrelevant for almost all other aspects of celestial navigation.

    "but why ONE observer should use two different instruments for altitudes and distances??"

    I agree. It wasn't necessary. Then again, it wouldn't hurt. Small arguments could be made in favor of Norie's wording, but I don't think it's worth worrying over...

    Frank R
    [ ] Mystic, Connecticut
    [X] Chicago, Illinois
    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)