NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Limb corrections using a reflective artificial horizon
From: Gary LaPook
Date: 2014 Nov 5, 21:05 -0800
From: Greg Rudzinski <NoReply_Rudzinski@fer3.com>
To: garylapook@pacbell.net
Sent: Wednesday, November 5, 2014 6:01 PM
Subject: [NavList] Re: Limb corrections using a reflective artificial horizon
Attached File:
(AH-Wind-Hood.jpg: Open and save)
From: Gary LaPook
Date: 2014 Nov 5, 21:05 -0800
Here are instructions for making a wind shield for your artificial horizon, cost $8.00.
From: Greg Rudzinski <NoReply_Rudzinski@fer3.com>
To: garylapook@pacbell.net
Sent: Wednesday, November 5, 2014 6:01 PM
Subject: [NavList] Re: Limb corrections using a reflective artificial horizon
Dave,
You should try making a wind hood for your artificial horizon. Check this archive link:
The 64' measurement that you did was
done correctly. You measured 2 Sun diameters. The artificial horizon doesn't change how the sextant measures. Double check correction sequence: 1. Apply index correction to artificial horizon observation. 2. Divide by two. 3. Apply refraction and semi diameter correction for the halved value. Do not correct for height of eye. Good luck on your next series of AH Sun observations.
Greg Rudzinski
Attached File:
(AH-Wind-Hood.jpg: Open and save)
