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
    Re: Level vials for mirror artificial horizons
    From: Patrick Goold
    Date: 2013 Mar 18, 16:06 -0400
    I would recommend looking at Surplus Shed first.  Search their site for "mirrors".  You will almost certainly find something around 6"x6" for under $10. Like this.

    Patrick



    On Mon, Mar 18, 2013 at 2:44 PM, Randall Morrow <randall.f.morrow{at}kp.org> wrote:

    I have found the first surface mirros to be benficial, particularly for lower angles sights. With first surface I have shot stars staning 20 feet back from the mirror and still seen clearly. For bodies with diameter it is easier to see tangency accurately. For point sources you will not see as much flare and double reflection. Both of these will increase accuracy and makes sight taking more pleasant. It takes the abiguity out of determining that "just right" moment. Also, the surfaces are optically flat so the distotions of cheap mirros are gone. It will pick up fine scratches over from placing the levels, but it does not affect their use. You may purchase a sheet of first surface, already cut into 4 each 6 X 6 inch pieces for 72$ (plus shipping)from "Alpine Glass". I have delt with them before and the service was good. If you have friends who want to try it you may split the costs of course. Sadly I broke mine, but I will be replacing it in the next 2 weeks.
    ----------------------------------------------------------------
    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
    ----------------------------------------------------------------

    View and reply to this message: http://fer3.com/arc/m2.aspx?i=122942


       
    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