Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: HO 211 with Sadler method
    From: Paul Hirose
    Date: 2016 Jul 26, 13:05 -0700

    On 2016-07-25 22:33, Robert VanderPol II wrote:
    > The value I would think most important would be max error.
    Where would you draw the "unacceptable" line? I have started to write up
    some conclusions, based on a max of 5', but I'd like to hear what others
    Note that an absolute limit at 5' or any other value is maybe not
    realistic. To get the max error I use a run of one million tests, since
    the value jumps around noticeably with only 100,000 tests. In other
    words, the really bad Ageton reductions occur in highly specific
    conditions and are statistically rare. And we'd normally detect those
    sights from the appearance of the plot.
    For instance, vanilla Ageton has a max error around 32', but 99.3% of
    sights are within 5'.
    If we stipulate that, say, that no more than 0.1% exceed a certain
    threshold, that may be a more meaningful standard to shoot for.

    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