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: Polaris' PM in RA?
    From: Sean C
    Date: 2020 Sep 24, 23:15 -0700

    Well, I'm still not absolutely sure what's going on - but I have updated my data to the FK5 values and everything seems to be working much better. Attached is a spreadsheet with the old values I was using and the FK5 values converted to the same format for comparison. I analyzed the differences and found some surprising errors. (Hint: σOct. [facepalm]) The coefficient of variance for the difference in PM in RA is 90,559% (yes, ninety thousand percent). But the fact that all of this slipped by me in the first place just goes to show what a small difference it makes most of the time.

    Frank, you mentioned trying a Google search with quotes. I thought about that, but I can't find the raw data I used and I'm certain I reformatted it for my spreadsheet.

    I'm going to do some more testing and hopefully post an updated version of my almanac soon. Thank you to everyone who replied. Every post is getting me closer to understanding what's wrong. I'm still confused, but I think I'm on the right track.

    Thanks!

    Sean C.

    File:
    StarCompare.xlsx
       
    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