A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Herman Dekker
Date: 2016 Nov 7, 13:01 -0800
Last Year Marz '15 I asked here how to use Table 4 from HO249 for Suns GHA+Dec.
Samuel L made 21 rules for the use off this Table. I have rewritten the rules for myself in a form.
I like forms with remarks, thats easyer for me to make less mistakes.
This year after not using Table 4 for about 5 months I tried it again and wrong answers came out.
(I check most of my calculations with Starpilot on the TI-89 calculator).
What went wrong? Calculation of the missing info in the main table 4. You have to calculated that every time you use
Table 4. The Diff. factors. Diff of Dec is partly in the form (without the sign). Diff off E has to be calculated completly.
I wondered why this Table is so incompleet? I thought I make the Table compleet myself. When I started I did not
realise this took me 9,5 hours calculating and typing. Well it is done, perhaps there are mistakes in the table, if you
find them let me know, then I can correct them. (The original Table has also one mistake and I do not believe that
this Table can be used unmodified until 2036 but that is one other discussion for later).
I have added the two pages A4 pdf, The Main table is bigger so the "Explanation" is offered but that was useless crap.