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: Star - Star Observations
    From: Brad Morris
    Date: 2010 Mar 11, 09:45 -0500
    George, you wrote:
    ” From 40º53'N, on 10 March 2010, at 0hrs 57 min GMT, I get the predicted
    altitude of both stars to be a few minutes less than 32º. Not anything like
    the values given by Brad, of Sirius 28.63501º, Alphard 37.8021º. One of us
    is doing something wrong. Is it Brad, or is it me?"
     
     
    Ouch!  The USNO will provide a Celestial Navigation Table based upon user inputs.  You would
    think I would have checked my answers against this source prior to posting. 
     
    In providing the USNO with my coordinates and GMT, Alphard's altitude will be 31d 51.6m
    while Sirius' altitude will be 31d 56.8m.  I believe that confirms yours suspicion that one of us
    is doing something wrong.  That would be me.  I believe I have some more work to do.
     
    In light of the Skyscout inaccuracy, it appears as if I need to recast the problem anyway.
     
    Best Regards
    Brad
     
     
     
     
     
     
     

      ________________________________  
    "Confidentiality and Privilege Notice
    The information transmitted by this electronic mail (and any attachments) is being sent by or on behalf of Tactronics; it is intended for the exclusive use of the addressee named above and may constitute information that is privileged or confidential or otherwise legally exempt from disclosure. If you are not the addressee or an employee or agent responsible for delivering this message to same, you are not authorized to retain, read, copy or disseminate this electronic mail (or any attachments) or any part thereof. If you have received this electronic mail (and any attachments) in error, please call us immediately and send written confirmation that same has been deleted from your system. Thank you."
       
    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