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
    Name or NavList Code:
    Email:
       
    Reply
    Re: Astro Navigation at HMS Collingwood
    From: Peter Monta
    Date: 2018 Nov 12, 14:12 -0800

     In this particular instance, since there were only a couple of students registered for the class, I had them stand during the presentation, hanging onto the low wall around the planetarium projector at the center of the room. This, of course, minimizes, but can never eliminate, the dome parallax that distorts the appearance of the constellations in the planetarium.

    In cases like this, where the smaller audience is all near one spot, I wonder if the projection system can be told to predistort its image so that the audience sees an accurate view.  The projection software should have a button that says "put geometric sweet spot here".

    Cheers,
    Peter

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID 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