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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2019 May 13, 12:11 -0700
It is the artificial horizon that inverts a celestial body in the reflected image so caution to the observer when observing an upper or lower limb of a gibbous or near full moon in an artificial horizon. Sunspots would also be inverted if using an artificial horizon.
Greg Rudzinski
From: Greg Rudzinski
Date: 2019 May 13, 11:37 -0700David,
I stand corrected. As you say the sunspot is twice refected so it can be used to determine index error in the same manner as a star or planet would be used.
Greg Rudzinski
From: David Fleming
Date: 2019 May 13, 11:00 -0700Greg,
Can you explain how the sunspot image appears in "reciprocal". Intition tells me this is wrong. The reflected image is twice reflected. Experience just now looking at my neighbors house tells me this is wrong.
DaveF
