A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Ed Popko
Date: 2017 Jan 9, 05:48 -0800
You are asking good questions. I do not believe the use of artificial horizons for lunars has not been discussed previously.
One important detail in using an artificial horizon is you have to correct the arc for IC before your divide the sextant angle in half. This may not have been the case in the example calculations you are citing but it's a mistake I have made myself in the past.
I'll be interested in Frank's responses to your posts.