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    Re: A little space navigation
    From: Brad Morris
    Date: 2018 Oct 8, 11:19 -0400
    Hello Dave

    You requested a look at the original image.  Here is a link to a collection of the artist's images.  

    A look at the url suggests that perhaps the images are created from his imagination.  The images of celestial bodies are obviously created by manipulation.

    You are correct, we are at cross purposes. Frank asked us to navigate from the image.  That's what I'm trying to do, otherwise, I'm lost in space. (For non-US readers, that's the name of a campy 1960's situation comedy, Lost in Space.  Sorry, couldn't resist!)  I am seeking our location within the solar system.  You are attempting to evaluate the altitude above the Earth.  Maybe not so much cross purposes as complimentary solutions.  I have no idea of the altitude!

    When I suggested that we cannot evaluate the altitude based upon the image, I had this in mind:

    This shows the Moon examined by a zoom lens.  Stop the video anywhere along the zoom and ask yourself, what is my altitude now?  The altitude of the observer never changes, the observer is firmly planted on the surface of the Earth.  Yet the image in the stopped zoom shows a different apparent altitude. 


    PS My answer is the satellite is between the Earth and Sun, along the orbit of the Earth close to June 21st.  I do not know the altitude.

    On Mon, Oct 8, 2018, 5:57 AM David Pike <NoReply_DavidPike@fer3.com> wrote:


    I think we’re talking at crossed purposes here.  I think your talking about the illumination of the Earth by the Sun as seen by a traveller in Space like in a telescope photograph of one of the planets.  I’m talking about the reduced view of the horizon due to the curvature of the Earth itself.  There’s an order of difference likely between your distance from the Earth and mine.   I think I’d want to know a bit more about the original, original photograph before deciding which view is correct.  DaveP

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