A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Norm Goldblatt
Date: 2015 Aug 9, 21:50 -0700
I'd love to know how you calibrate. Star field? Calibration target? If target, I wonder if calibration would be reliable at finite distance. Obviously, the target has to be reasonably close to be practical. I tried using Ursa Major and found that either I made some mistakes or the iphone 5 optics produce a miserably distorted field (at least for CN).