A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2016 May 16, 15:40 -0700
Sight reduction for this image with Hs upper limb Sun at 0° worked out well on my Palm Pilot calculator but manual tabular methods proved troublesome. There were issues with the order of corrections and what to do about refraction for a large negative Ho altitude. Has anyone else tried correcting this observed 0° Hs from a 12788 foot (3875 M) height of eye ? The Palm Pilot Navigator used - 56' as the refraction correction vs. - 34' if from sea level. I am assuming temp. press. corrections would be as if at sea level.