NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Scrap paper with time sights c.1870
From: Hewitt Schlereth
Date: 2013 Feb 21, 10:13 -0800
From: Hewitt Schlereth
Date: 2013 Feb 21, 10:13 -0800
Frank, this is slow going for me. I'm not at all quick or comfortable with time sights. Nor have I had my second cuppa. :-) Anyway, a question: In the lower left of the upper left quadrant, the number "18 36" looks like an angle (18* 36') and the "19" under the "36" to be (19'). Then should't the addition (if it is an addition) result in 18* 55', not "18 45" ? Hewitt Sent from my iPad On Feb 21, 2013, at 9:11 AM, "Frank Reed"wrote: > Lars, you wrote: > "It is a 9 am sight of sun, lower limb, height of eye 17 feet. > December 27th, 1871 at GMT 11h51m55s civil time. > Latitude 36d37m north, longitude 42d38m west. > Chronometer 3m52s fast on GMT. > The nautical table used did not contain log sine square half angle." > > Nice! I only got a few of the details before I set it aside. How confident are you in the year of the observations? There is no other data here except another sheet of scrap paper, probably from the same voyage, with about sixty more time sights. Would anyone like to see those? > > -FER > > > ---------------------------------------------------------------- > NavList message boards and member settings: www.fer3.com/NavList > Members may optionally receive posts by email. > To cancel email delivery, send a message to NoMail[at]fer3.com > ---------------------------------------------------------------- > > > > > : http://fer3.com/arc/m2.aspx?i=122449 > >