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: Who's that hiding behind Jupiter?
    From: David Pike
    Date: 2020 Aug 21, 11:49 -0700

    Murray Buckman you said: I don't see anything which would have been visible before Saturn, except Ganymede, which was perfectly situated but probably too close to Jupiter to be separately discernable without at least binoculars. 

    Murray
    That’s the conclusion I came to after looking at some Jupiter websites.  The problem was most said you might see Ganymede with binoculars, but never with the naked eyes.  A few said you might see it in special circumstances, so maybe the special circumstances prevailed.  It was clearly visible like an airliner approaching from a long, long way off with its port landing light showing a lot brighter than its starboard one.
    Funnily enough, I had the charity shop 12x40 binocs with me (hardly an ideal size, but hey, what do you expect for £4GBP) to see if they were any good for distance viewing in twilight.  I tried them on Jupiter, but I couldn’t hold them steady enough to see two bodies, and there was nowhere to hold them against.  DaveP

       
    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