+- Forums (https://thenauticalalmanac.com/Forum)
+-- Forum: Main Forum Area (https://thenauticalalmanac.com/Forum/forumdisplay.php?fid=1)
+--- Forum: General Topics Here (https://thenauticalalmanac.com/Forum/forumdisplay.php?fid=2)
+--- Thread: Pub. No. 249 (/showthread.php?tid=15)
Pub. No. 249 - LouisC - 12-15-2015
Pub. No. 249 makes life easier as I only need about 10 degrees of Latitude Same Name sheets. Guess what time of year we sail?
We do mostly Sun sights and Stars using Vol. 1.
The celestaire Vol.1 epoch 2015 stars print out badly. It always look motled and not sharp like vol. 2 and 3. You get what you pay for.
Thoughts?
RE: HO-249 - c_davidson - 12-15-2015
Celestaire should fix that messy looking Vol. 1.
The only pages I print out are the Latitudes I'm usually in.
You sail during the Summer (in your hemisphere)! Right?
Did you ever use the Doniol method of sight reduction?
RE: HO-249 - c_davidson - 12-16-2015
Heard of R. Doniol method? Yes, a long time ago and even tried it a few times. It's one of the countless methods to arrive at the two precious calculated figures.
"Why not give it a try....again", I say to myself.
Clendon
RE: HO-249 - LouisC - 01-13-2016
Doniol is a simple method and over the past few months I have given it a try. Initially, it was a somewhat confusing and I got the Haversine tables from Bowditch 1972 Vol. 2.
I have not solved for Zn yet as the effort was to obtain only Hc.
Perhaps we should open a new thread about Doniol?