NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Beginner
From: Bill B
Date: 2005 Sep 15, 18:03 -0500
From: Bill B
Date: 2005 Sep 15, 18:03 -0500
> Rather this is the > only test of its type that I have seen and I offered > it simply as further grist for the mill. Mike There is land and water test of metal vs. Davis Mark 3 and Mark 15 by the same hand on David Burch's Starpath site. He appears to have no bias or axe to grind, and is candid about his methodology. For a general discussion start at: http://www.starpath.com/catalog/accessories/psextants_midpage.htm There are two links on that page. The first, "How to take plastic sextant sights" will lead you to the PDF. In it is a link to "Sample IC data 1" which looks at the Mark 15 index errors The second link, "Sample sights underway" will take you to the sea and land comparisons mentioned above. http://www.starpath.com/online/celestial/vic-maui-sights.pdf Bill
