
NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Daniel Hazen
Date: 2025 Apr 14, 07:02 -0700
I'm pretty pleased with my results with these recent sights although I'm sure I can do better. I've attached to this post the maps of my actual sun sight reductions even with the fuzzy Pacific Ocean horizon.
I did buy the GPS Anti Spoof app but I haven't found any instructions as to how to use it. I had no idea what the +- No delay ot T adjust indicators were.
I used the app to compare the altitude of a star I was seeing with the altitudes of Bright Stars in your app, and figured out it was Sirius. At the time, the only objects I could see was that star and Jupiter (which was over land rather than water.).
All sights were taken from the bluffs near Gaviota State Park in California with a GPS elevation of 149 feet plus 5 feet to my eyes. I've also attached a picture of my shooting location. The horizon here appears sharper than it was to my eye most of the time. Maybe I need new glasses?!
Anyway, I'm reading through old posts on this group. I found some about averaging sights and will do some of that. I also found some about determining position without an AP, and that is what I am doing when I use something like Topo 9.0 and circles of position. That depends on guessing, however, whether one is somewhere in North America as opposed in the ocean of the coast of South America!
The group and the information from it is helpful. Thanks!
Daniel H.