A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2015 Dec 26, 16:46 -0800
The 7x35mm scope gains little using the whole horizon compared to the substantial gains in the field of view when using the 4x40mm scope or sight tube. I find the whole horizon paired with a sight tube great for Sun observations when going to weather in a small craft. The split horizon mirror paired with a 4x40mm scope is the better option for twilight observations. The main benefit of the 7x35mm scope is to better see the distant horizon from the bridge of a ship with a secondary benefit of being able to determine a more accurate index error.
If only one sextant is to be had then a 4x40mm scope with a split mirror covers the most bases. If there is room for two sextants then having one with a whole horizon mirror and the other with a split horizon mirror would be ideal.
From: Mark Coady
Date: 2015 Dec 26, 01:10 -0800