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Re: Stellarium, refraction, HP
From: Ed Popko
Date: 2020 Jan 11, 04:39 -0800
From: Ed Popko
Date: 2020 Jan 11, 04:39 -0800
Jim,
I probably don't have the same inputs that you used but here is where I come out using your six sights. I have assumed Sun-Moon NEAR.
Where I'm guessing is eye height and pressure. BTW, nice cut angle, about as close to 90° as you can wish for.
The six sight average time and LD observed are 17:55:11 GMT and LDobserved 84°54.05' using IC=-2.0' (which is a lot)
SD Sun 16.27' Moon 16.28'
Using Frank's calculator LDcalc 85°07.2' LDtrue 85°06.7'
Err 0.5' COS -0.00986
Interpolating for time
GMT LD
17:00:00 84°41.8'
17:55:11 85°07.2' 1:16 fast <-----
18:00:00 85°08.8'
19:00:00 85°35.9'
Lots of assumptions. How did your time calculation come out?
Ed
