A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Joe Wong
Date: 2022 Jun 6, 08:21 -0700
I understand that bubble sextants like my Kollsman do not need dip corrections, but it has occured to me that these sextants may operate at different flight levels where air would be as smooth as possible to facilitate a good sighting. So I was wondering, if a navigator choose to shoot a relatively close body, say the moon, would the hs value vary when shooting at different altitudes(20,000ft, 30,000ft or shooting at near ground level like myself). If so, would the "hs"s deviate so greatly from each other that a correction be needed at corresponding flight levels?