NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sextant arc length
From: Stan K
Date: 2015 Sep 18, 14:52 -0400
From: Stan K
Date: 2015 Sep 18, 14:52 -0400
Alex,
Yes, they may be difficult to do (I even had trouble at 128º) but apparently the Navy Mark II could go to 145º, 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 <NoReply_Eremenko@fer3.com>
To: slk1000 <slk1000@aol.com>
Sent: Fri, Sep 18, 2015 1:12 pm
Subject: [NavList] Re: Sextant arc length
From: Alexandre Eremenko <NoReply_Eremenko@fer3.com>
To: slk1000 <slk1000@aol.com>
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
