A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Antoine Couëtte
Date: 2017 Sep 26, 10:16 -0700
RE : sep-2017-g40186
Excellent reply, YOUR ANSWER is correct - or at the very least it points to the very right direction - and my earlier explanation is wrong.
Tackling the problem from another viewpoint - actually from looking from the Southern Cross Direction whether we can see some same part of the Earth in the Sun Shadow all year round - I had come to the impression that this "all year round visibility band" is actually rather narrow.
Let me think about it a little more in depth in order to dig out some more reasonable solution.
Meanwhile if somebody has found one solution, then let's read about it. Frank, why not you ?
1.000 thanks again. Let's get the right answer, and your proposal of 0° - 67° S which would translate into 10°S - 57°S with extra criteria (Sun 10° below the horizon and southernmost ACRUX Star 10° above the horizon).