Welcome to the NavList Message Boards.

NavList:

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

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
    Re: Bris Calibration Image
    From: Greg Rudzinski
    Date: 2017 Nov 6, 11:45 -0800

    For an exercise - what is the distance from the mountain peak on Santa Cruz Island as seen in the image back ground ? Mountain peak elevation 1808 ft. Height of eye 8 ft. Hs of peak above horizon 0° 48.2'. For extra credit- what is the azimuth to the peak ? Sun 11/04/2017 UT 23:35:14 Lat34° 10.5'N  Lon119° 14.1'W

    Greg Rudzinski

    From: Greg Rudzinski
    Date: 2017 Nov 6, 09:27 -0800

    This calibration image is taken with the 35mm prime super takumar. The #4 Bris reflection has the upper limb Hs just about exactly zero from an 8ft. height of eye.

    Lat 34° 10.5 N   Lon 119° 14.1 W

    Hs work out backwards to 15° 36'  for reflection #4 on this homemade Bris sextant. 

    Greg Rudzinski 



    Attached File: 
    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