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: Jupiter in daylight and micrometer test
    From: Brad Morris
    Date: 2016 Apr 20, 13:05 -0400

    Hi Peter

    You wrote
    Do people report excellent success seeing Jupiter with a SkyScout, with the display helpfully blinking "Jupiter is here"

    +++++

    With the SkyScout, not only does Jupiter become evident, but so does everything else.

    With a large catalog of objects, GPS, inclinometer and compass, the SkyScout will point you in the direction of any celestial object you may desire.  You don't have to know or calculate where to look, you just look at the location indicated.

    Once the location is evident, it is up to your eyes to see it however.  Ask to see the sun after sunset, and it points through the ground towards the sun.  Ask to see the moon with heavy clouds and it points right at the moon, though the clouds.  If the object is to feint to see, you wont see it, even when looking at the right location.  It's not magic.

    Brad

    On Apr 19, 2016 11:54 PM, "Peter Monta" <NoReply_PeterMonta@fer3.com> wrote:


    To see stars and planets in daylight, we are fighting against the "visual saccades" --those very rapid, small-scale movements of the eyes' point of focus that we are normally not aware of. Without some fixed point to "hold onto" visually, it is nearly impossible to see Jupiter in daylight at sea level.


    Would it help to suspend a collimated source in midair near the object of interest?  Could use a sheet of glass, or other beamsplitter, for a head-up display.  A SkyScout might be another possibility.  Do people report excellent success seeing Jupiter with a SkyScout, with the display helpfully blinking "Jupiter is here" with continuous position and focus cues, and little or no success without the aid?  How about a camera viewfinder in the same role?

    Cheers,
    Peter

    View and reply to this message

       
    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