NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Longitude by Time Sight...good enough at sea?
From: Hewitt Schlereth
Date: 2012 Dec 13, 21:34 -0800
From: Hewitt Schlereth
Date: 2012 Dec 13, 21:34 -0800
Greg, I only have one copy. I should be able to photocopy it though. I'll try tomorrow. Hewitt Sent from my iPad On Dec 13, 2012, at 6:53 PM, "Greg Rudzinski"wrote: > Hewitt, > > I have not seen the Weem's secant table for time sights. I have seen the Rust diagram for azimuth which is not as good as Hanno Ix's azimuth diagram. The Weem's 9 page secant table for time sights sounds very interesting and could be combined with the Ix diagram to create an ultra compact sight reduction method. > > Greg Rudzinski > > [NavList] Re: Longitude by Time Sight...good enough at sea? > From: Hewitt Schlereth > Date: 13 Dec 2012 14:05 > Frank and Greg - > > Have you seen Weems' The Secant Time Sight. Nine-page table and Rust for azimuth gives you an LOP. I used to have it in my sextant box for 'when else failz' backup. :-) > > Hewitt > > Sent from my iPad > > ---------------------------------------------------------------- > 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=121405 > >