NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sun sights during an eclipse: "bad limb" calculation
From: David Pike
Date: 2023 Sep 30, 16:38 -0700
From: David Pike
Date: 2023 Sep 30, 16:38 -0700
I realised my error. If PinA is always positive, then it has to be added to Ha to get Hc. So to get Ha you subtract PinA from Hc. That puts the Moon (as viewed) below the Sun, so no you can't shoot LL. You need to shoot HL. Thus reconfirming that the Moon remains the bete noir of Air Navigators. There's the odd minute of arc that needs tidying up here and there, but that can wait until tomorrow when I steal GHA and Dec Moon from somewhere other than the Air Almanac. DaveP
