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: Precision of lunars
    From: Frank Reed
    Date: 2007 Apr 25, 22:53 -0400

    Alex you wrote:
    
    > Meanwhile I post my recent results, so that together with the previous
    > recently posted we have a complete set of 1 month observations.
    > I stress that this is a COMPLETE set, including good and bad
    > observations.
    > If I wanted to choose a "typical one", by any criterion
    > (average, median, etc.) this typical one will have error less than
    > 0.2.
    > There are all Lunars with SNO-T and 6x scope.
    > April 20 Venus at 11d. Errors: 0.1, 0.1, -0.2, 0.15.
    > April 20 Saturn at 57d. Errors: -0.1, 0.1, 0.0
    > April 21 Venus at 21d. Errors: -0.3, -0.2, 0.1, -0.2, -0.1
    > April 21 Pollux at 19d. Errors: 0.0, 0.2, 0.2, -0.1, 0.2
    > April 21 Spica at 110d. Errors: 0.5, 0.5, 0.5
    > Same again, AFTER reduction of the previous 3:
    > April 21, Spica at 110d. Errors 0.2, 0.0.
    
    Oh yeah, those are excellent results! I apologize for misunderstanding. I
    read through that message so fast earlier that I missed the bottom line. I
    guess the only part I'm puzzled by now is why you agreed with Lord Kelvin
    that one could not expect better than 0.5 minute of arc accuracy? Did I
    misunderstand that, too? Were you agreeing with his assessment or not?
    
     -FER
    www.HistoricalAtlas.com/lunars
    
    --~--~---------~--~----~------------~-------~--~----~
    To post to this group, send email to NavList@fer3.com
    To unsubscribe, send email to NavList-unsubscribe@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