Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding

Compose Your Message

Add Images & Files
    Bris Sextant Projects
    From: Greg Rudzinski
    Date: 2018 Aug 3, 10:55 -0700

    Several different Bris Sextant projects have been completed and tested this summer with some new findings regarding construction. The first finding was that there is quite a difference in quality between microscope slide brands. The best brand so far out of five is AmScope BS-50P. The next and most important finding is the use of UV activated resin as an adhesive. Very sturdy ! Just don't make any mistakes with it. Undoing will require a razor blade and or acetone. The final finding is that high altitude Bris Sextants are hard to construct and under perform in testing. The limit seems to be 52° using a 4mm shim for the camera models. When used on a DSLR camera best results were achieved with a wide angle 35mm lens, f16, infinite focus, manual mode.

    Greg Rudzinski



    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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