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
    Index Error and Micrometer Drums
    From: Greg Rudzinski
    Date: 2011 Jan 3, 16:23 -0800

    The recent ex-meridian/ LOP exercise which had all my LOP's away from GPS had me back out taking Sun lines to investigate a possible explanation. What I discovered was the bad habit of heavy fingers on the micrometer drum during the index error zero process. My advice to all is to use light fingers when operating the micrometer drum (especially for plastic sextants). Sometimes this is easier said than done when conditions are windy and the deck is tossing. The next best thing to do is to preset the sextant to a close altitude and let the body set or rise to the horizon.

    Greg Rudzinski
    ----------------------------------------------------------------
    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?

    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