NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Distant Horizon
From: Herman Dekker
Date: 2023 May 18, 00:27 -0700
From: Herman Dekker
Date: 2023 May 18, 00:27 -0700
Hello Frank,
The sentece: Let's call your altitude 4500 feet. At that height the mean density of the air is lower by about 15%. Interests me.
Is there a table or formula to calculate the "reduction factor" for different heights above sea level.
I am interested because when I am in Germany I take sights between 450 and 800 mtr. (1475-2620 feet) above sealevel.
Or gives the local air pressure on that height already a sufficient correction?
Regards<
HermanD
