NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Recertification of a sextant : Re: anyone familiar with a Luna Sextant?
From: Greg B
Date: 2013 Dec 26, 19:53 -0500
From: Greg B
Date: 2013 Dec 26, 19:53 -0500
Hi All, Does anyone know of a service that would check the certification of a sextant and supply me with a new calibration card? How much would this cost? Is it silly to do this on a instrument from 1982? The cert that came with it originally said: "no errors for practical navigation" but down in the lower right corner it said "RES: 0.02" which I would take to be a resolution of 0.02 of a degree i.e.; a little over a minuet of arc (0.016666) But I have seen certs on sextants showing errors in arc seconds. In practical terms how important is this? Thanks, ~Greg On 12/26/2013 03:55 PM, Greg wrote: > Hi all, > forgive the bandwidth but is anyone here familiar with a sextant > sold as the "Luna Sextant" > by the apparently now defunct "Luna Trading Company, Matairie LA" I > just bought it last week > off of ebay from a guy in Georgia. The sextant appears in to be > pristine condition no wear on > the worm or the scale gear. I saw another one being sold by a > Salvation Army group in Texas, > but it was bid up too high for me. This one cost me $425. we have not > had any clear view of > the sky due to clouds to try a 'real' sight, then the holiday, but > initial puttering with it shows that > I can set the IE to zero, and if I sight on a distant house etc, and > take a altitude, then return to > 0 degrees the IE is still zero - (unlike my plastic Davis sextant). > The seller threw in a book he had > got with it called "Celestial Navigation" (C) 1989 by Tom Cunliffe The > book has the previous > owners name, FL address, and phone number but the phone is > disconnected and I think this > might have been purchased at an estate sale for speculation (?) Any > Idea how good or bad this > instrument is, and what I should expect for accuracy (on land for the > moment)? > Many thanks in advance, > ~Greg > 'Svenska Flicka' > Cat 28 #467 >