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
    CHO sun-scope collimation collar -- what about vertical?
    From: Richard Reed
    Date: 2010 Apr 3, 12:13 -0700

    I've adjusted my recently acquired SNO-M and am pleased, but I haven't found anything about the consequences of small alignment errors where the scope points above or below the mid-line of the horizon mirror.

    With the two halves of the tube eyeball-straight, looking back along and through the tube seems to place the sight line about 2mm above the horizontal mid-line of the horizon mirror.

    How does this affect the view? The only adjustment is to put in a down-angle between the eyepiece side and the objective side of the scope, and I don't know what sort of measurement reference to use.

    Thanks,
    Richard
    ----------------------------------------------------------------
    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