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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

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    Re: Navigation instruments from Paris, Maskelyne
    From: Joel Jacobs
    Date: 2004 Jul 20, 09:02 -0400

    Hello Jan,
    
    I have a number of Adobe photo editing programs, but the one I most prefer
    is their Limited Edition, Number 5.0. It is relatively inexpensive, and easy
    to use. And even though not having all the more powerful features of Adobe's
    Photoshop, etc., I do not feel limited.
    
    Without knowing or being familiar with which software you're using, I really
    can't tell you what to do. However, when you save a file, select "Save As".
    That should bring up some form of menu which will allow you to pick a number
    from 1 to 10. The lower the number, the smaller the file size. Number 3 or 4
    is more than enough for the web, and you will see no deterioration in
    quality. You also can select picture size, and then reduce it from the 14-17
    inches that are the out put of your camera to a more useable 5 or 6 inches.
    You have should the option of doing this in pixels or inches.
    
    Here's a link to one of our pages. You can see how quickly the pictures
    open.
    
    http://www.landandseacollection.com/id2.html
    
    If you need something further it may be best to take this off-group,
    
    Joel Jacobs
    
    
    
    
    ----- Original Message -----
    From: "Jan Kalivoda" 
    To: 
    Sent: Tuesday, July 20, 2004 4:54 AM
    Subject: Re: Navigation instruments from Paris, Maskelyne
    
    
    > Hello, Joel,
    >
    > thank you for your remark. I am fully aware of your troubles, but working
    > only from internet cafes in Paris, I cannot help you and me now. I will be
    > able to redress and republish my pictures only in August from Prague.
    >
    > Meanwhile, can you give me advice about software and modes that shall I
    use?
    > I tried higher compression ratios for these JPG's, but the quality
    suffered.
    > And as these pictures are not the best even uncompressed (it was a bit
    > difficult to take them in an unsuitable room, deep behind the glass), I
    > wonder, how to diminish them and not to degrade them too much.
    >
    >
    > Thanks, Jan Kalivoda
    >
    > Joel Jacobs writes:
    >
    > > Hello Jan,
    > >
    > > Thank you for the invitation. But, the file sizes of you pictures
    average
    > > about 2 Megs. For some of us they take too long to load even with
    broadband.
    > >
    > > Simple photo editing software would allow you to get the file size down
    to
    > > 20 KB and still have good pictures.
    > >
    > > BTW, The first picture is still working on opening.
    > >
    > > I very interested in what you published, but haven't more time,
    > >
    > > Joel Jacobs
    > >
    > >
    > >
    > >
    > > ----- Original Message -----
    > > From: "Jan Kalivoda" 
    > > To: 
    > > Sent: Monday, July 19, 2004 5:39 PM
    > > Subject: Navigation instruments from Paris, Maskelyne
    > >
    > >
    > >> Hello,
    > >>
    > >> if anybody wants, login to "http://www.xdrive.com" under the login
    > >> "navigation{at}seznam.cz" (XDRIVE allows only valid e-mail addresses as
    > > logins,
    > >> as you probably know), password "celnav".
    > >>
    > >> You have 60 MB photos of some historical navigation instruments kept in
    > > the
    > >> Marine Museum in Paris (directory "Musee de la Marine") there. I tried
    to
    > >> create the logical sequence of them from the nocturnal and the Jacob
    staff
    > >> to repeating lunar circles.
    > >>
    > >> Of course, I am not a professional photographer and I didn't have the
    > >> instruments available "au plain air".
    > >>
    > >> At the end of this week, I shall obtain some copies of Maskelyne's less
    > >> known works printed in the 18th century. It would be interesting to
    chat
    > >> about them a bit in the list.
    > >>
    > >>
    > >> Jan Kalivoda
    
    
    

       
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