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    Re: Sextant arc length
    From: Alexandre Eremenko
    Date: 2015 Sep 19, 02:38 +0000

    One problem that I encountered is that the whole index mirror looks so narrow
    under a large angle, that it is hard to hold the Sun limb within it.
    (The whole Sun just does not fit).
    
    Alex.
    
    ________________________________________
    From: NavList@fer3.com [NavList@fer3.com] on behalf of Stan K [NoReply_StanK@fer3.com]
    Sent: Friday, September 18, 2015 3:47 PM
    To: eremenko@math.purdue.edu
    Subject: [NavList] Re: Sextant arc length
    
    Alex,
    
    
    Yes, they may be difficult to do (I even had trouble at 128�) but apparently 
    the Navy Mark II could go to 145�, making it a quintant.  So the Bowditch 
    problem might be an arbitrary example, but not out of the realm of 
    possibility.
    
    
    Stan
    
    
    
    -----Original Message-----
    From: Alexandre Eremenko 
    To: slk1000 
    Sent: Fri, Sep 18, 2015 1:12 pm
    Subject: [NavList] Re: Sextant arc length
    
    
    
    
    I tried some very long Lunars (up to 137d) with my SNO-T and
    backsights with a pocket sextant (up to 140d). This is very tricky.
    
    I suppose the example in Bowditch is given for illustration only.
    
    Alex.
    ________________________________________
    From: NavList@fer3.com [NavList@fer3.com] on behalf of Stan K [NoReply_StanK@fer3.com]
    Sent: Friday, September 18, 2015 11:12 AM
    To: eremenko---.edu
    Subject: [NavList] Re: Sextant arc length
    
    Thanks, Dave.  No need to remove the stop screw - I was just trying to figure 
    out whether a problem in the 1977 Bowditch of a back sight with a sextant 
    altitude of 141d 04.9' was realistic or just some arbitrary example.
    
    
    Stan
    
    
    
    
    
    
    
    
    
    :
    http://fer3.com/arc/m2.aspx/Sextant-arc-length-StanK-sep-2015-g32827
    
    
    
    

       
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