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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Lu Abel
Date: 2018 Aug 5, 17:21 +0000
RE : Its-fourplanet-fix-time-Rudzinski-aug-2018-g42485
Dear Greg,
Thanks for your shooting report and drawing.
What do "Hs" and "Hc" stand for ?
"Raw" instrument reading ? Which I suspect for "Hs"
Corrected for Bulb Error ? (Which I suspect for "Hc" vs. "Hs") hence we would still need to correct for atmospheric refraction and parallax,
Corrected for Bulb Error and atmospheric refraction ? Hence we would still need to correct for parallax ...
Corrected for everything including parallax (i.e. geocentric value) ?
Thanks in advance.
Expecting to shoot all of them on the Western Coast of France shortly, maybe when Lady Moon is back in the night sky ...
Very Best Regards
Antoine