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: R: Re: R: Solutions to Gray's 100 Problems (Problem 1-1)
    From: Parsa
    Date: 2007 Sep 27, 20:36 -0700

    George, thanks for your comments.
    In regards to the sextant sight corrections, you may be right about
    the difference between I.C. and IE. The text of "100 Problems" has
    I.C.= -1.2'.
    I assumed this to mean this was the correction to be applied, in other
    words it is "on" the arc and therefore needs to be subtracted from the
    sextant reading.
    The CelestNav program has IE, and when I have a large negative value,
    it makes Ho larger, but when I have a large positive value, it makes
    Ho smaller. So I think it should be changed in sign.
    When I do that I get 15 07.9', which is much closer to my 15 08.4'.
    The difference my be from the equations used by the software and
    rounding in the almanac table.
    
    I regards to the moon, yes I know it swings all over and has a lot of
    other crazy wobbling to boot. I'll watch my table declinations and
    signs closely.
    
    Thanks
    Parsa
    
    
    --~--~---------~--~----~------------~-------~--~----~
    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