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: The moons of Jupiter for Time or Position?
    From: Francis Upchurch
    Date: 2016 May 6, 05:26 +0100

    I agree with Jackson. Time for a  book Frank. How about something like “Reed’s Wrinkles in Celestial Navigation”? or some such. To find all your gems from the last few years in one published place would be wonderful.

    However, a health warning for crackpots like me. When you mentioned  gyro-stabilized telescopes to try this at sea, did you realise that I now have to find a way to do it! (My wife will definitely say no to this one!)

    Seriously though, does anyone know about gyro telescope mounts? Has anyone tried this?

    One of my fictional naval heroes, Jack Aubrey ,in O’Brien’s books was a keen amateur astronomer/cel  nav. Enthusiast. He experimented with his version of the Irwin Chair, but I do not think they had gyros in those days.

    About 6 years ago I tried to get GMT (land based) from Jupiter’s moons with only limited success (+/- about 1 min time, but  my predicted times were only given in whole minutes, not seconds. I will soon try again.

    I’m also planning to try GMT and longitude of my garden with Mercury Transits on Monday, but the current forecast is for cloud cover.

    Is anyone in sunny climes going to have a go?

    Francis

       
    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