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
    Making an artificial horizon -- seeking a source for optical flats
    From: Paul Saffo
    Date: 2011 Jan 22, 20:51 -0800

    I have been looking for some time for a source that sold smoked optically flat glass suitable for making an artificial horizon. So far, I haven't had any success (what I found was at once too small, and too expensive!) and thus was hoping someone on this list might have a suggestion.

    Incidentally, my plan was to make a setup similar to the breathtakingly expensive Freiberger artificial horizon available from various sellers. For leveling, I was planning to mount the glass on a surveyor's tribrach, which are available at quite reasonable (under $100) cost.

    Any and all leads would be greatly appreciated!

    -p
    ----------------------------------------------------------------
    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