A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David C
Date: 2021 Jan 10, 13:12 -0800
David P wrote
It was the first time after lunch you could take it without your index arm doing the 'splits'?
Correct. It was also the highest sun altitude I have observed.
H 127° 02'
/2 63 29°
Ho 63° 44.7'
GHA 205° 38.4'
long 175° 05.2'
LHA 381 18.9'
t 21° 18.9'
Using a calculator and the cos formula Hc 63° 44.2.
I was suprised at how quickly the sun moves in the mid afternoon. I set the sextant to maximum and thought I had about 15 minutes until the images touched. I decided to see if both images were visible so casually picked up the sextant. Not only could I see both images but they were a sun's diameter apart!!!!! I continued observing and within a few minute the limbs touched.
Is there any combination of optics that could be used to take a noon sight at this time of year at lat 41S with an AH?