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: Planetarium Software
    From: Ken Muldrew
    Date: 2005 Apr 11, 11:01 -0600

    On 11 Apr 2005 at 11:35, Michael Dorl wrote:
    
    > I know there are probably better
    > ways to do this using databases as pointed out on this list but I prefer
    > the computation method.
    
    Actually, I think the Swiss Ephemeris uses VSOP87 and then corrects the
    answer from a database; that's how they get such good compression (about
    1MB for every 300 years IIRC). Not that it matters much but I suppose this
    approach gives one the best of both worlds.
    
    Ken Muldrew.
    
    
    

       
    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