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    Re: Height by sextant angle
    From: Fred Hebard
    Date: 2014 Dec 14, 14:28 -0500

    Frank,
    
    What makes you think the Kollsman wasn’t a backup for when things went south?  
    Didn’t Apollo 13 get a bearing off a star for one of their return rocket 
    burns?
    
    Thanks,
    
    Fred
    
    Fred Hebard
    mbiew---.net
    
    
    
    > On Dec 14, 2014, at 11:31 AM, Frank Reed  wrote:
    > 
    > Hi Bruce.
    > 
    > ...
    > 
    > The concept is, of course, perfectly reasonable even if the "space pen" 
    parable isn't an actual example for it. Indeed, look no further than the 
    "space sextant" commissioned from Kollsman in the 1960s which was used to 
    shoot lunars aboard Skylab in the early 1970s. It was a complete waste of 
    time and money. Actually, I suppose in that case, the lesson is opposite. 
    Technology had already superseded the utility of the handheld sextant, but 
    bureaucratic inertia remained focused on it, in one very small corner of 
    NASA's sumptuously-funded Apollo-era bureaucracy, thanks to its appeal as a 
    "simple" solution.
    > 
    > Frank Reed
    > ReedNavigation.com
    > Conanicut Island USA
    > 
    >  
    > View and reply to this message
    > 
    
    

       
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