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
    Results with mirror AH
    From: Alan S
    Date: 2014 Apr 25, 02:32 -0700

    Sean C:

    Results obtained yesterday 24 April, AM and PM sun shots from my location, with mirror horizon using theatrical lighting gel material as sun shields in addition to those on Astra sextant were disappointing. Will post numbers later. Suffice it to say that fixes obtained were way outside of visual distance of DR position. I might well have done something wrong, possibly screwed up leveling the mirror AH assembly, though I don't think so. The sextant shots "felt" good. I used an Empire Torpedo Level purchased at a nearby Loews. Possibly this is the problem. Something is wrong for when I do the same sort of shots using a Davis AH, my calculated fix is consistently within 2 NM of DR (GPS coordinates), when sight reductions are plotted on a USPS CLS plotting sheet. "Back to the drawing board" as used to be said.
    ----------------------------------------------------------------
    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
    ----------------------------------------------------------------

       
    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