A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Date: 2014 Aug 8, 19:33 +0100
Harry Pidgeon,”Islander” round the world single handed early 20’s used the Martelli tables, (occasionally! So you are in good company.) He said he was so sea sick down bellow that he often just did meridian sights on deck and left it at that.(like Slocum, he got there) I’ve never tried them, not fond of tables, preferring slide rules, but will give them a go and see. All good stuff.
For longitude, I frequently use the Martelli Time Sight Tables published here in 2013 by Robert Bernecky. I then quickly use my $13 USD hand calculator for comparison.......precisely the same LHA (t). Really quite good.
On Thu, Aug 7, 2014 at 12:56 AM, Henry Halboth wrote:
Sorry for the screw up. Will try one more time.
On Wed, Aug 6, 2014 at 11:56 PM, Henry Halboth < NoReply_Halboth@fer3.com> wrote:
You might be interested in a summary of the Time Sight's usage which i submitted some years ago and which i attach hereto.
On Tue, Aug 5, 2014 at 11:51 AM, Richard W. Jacks < NoReply_RichardW.Jacks@fer3.com> wrote:
I have been reading about the "Time Sight" in several navigation books and find all reference work involves the Sun. I follow how longitude was derived from a single sight by using a DR Latitude. What however was the procedure when working multiple sights as in morning and evening stars,planets or Moon? Did they work up individule longitudes for each sight and then utilize an average Longitude with what I would assume to be a commom Latitude?
Attached File: 128354.the time sight (10).odt(no preview available)