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: Venus in daylight in southern latitudes
    From: Sean C
    Date: 2021 Oct 21, 11:15 -0700

    Tony Oz,

    You wrote:

    "Is it my astigmatism or indeed Venus is a crescent on the photo? Never seen it to be a crescent, even with binoculars. may be it was too bright..."

    If you're referring to the photo I posted (I don't think David posted a photo), then yes, Venus does indeed look like a crescent. Or, more accurately, like a squashed donut. If you zoom way in to the photo, you can even see a slightly darker region near the center of the body.

    I'm not sure what caused this. Perhaps it was because my hand was not steady when I took the picture. Or maybe it's turbulence in the atmosphere or just an artifact of my phone's image sensor. Or perhaps it's a combination of those and/or some other factors.

    I've attached an enlarged image below. Maybe someone who knows more about this will chime in.

    Regards,

    Sean C.

    File:


       
    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