NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Index error test with Davis whole horizon mirror
From: Herman Dekker
Date: 2023 Oct 5, 08:03 -0700
From: Herman Dekker
Date: 2023 Oct 5, 08:03 -0700
Hello Erik,
You cannot, I attemped that a few years ago and I did not work, because with those glasses on your nose
you cannot see anything.
I discused it with David Burch (Ftom Starpath) and he agreed this is not a good solution.
You can cut that glass and place it on the front end of your telescope or sighting tube.
That works fine.
In his blog David explains the method and how to make a sun filter.
http://davidburchnavigation.blogspot.com/2018/09/solar-index-correction-method-for.html
You have to scroll down the article to find the sun filter.
regards<
HermanD