NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Compass Check
From: Greg Rudzinski
Date: 2016 Mar 20, 18:00 -0700
From: Greg Rudzinski
Date: 2016 Mar 20, 18:00 -0700
For 9:07 UT at Hartlepool I get a deviation of 35.6° west based on image compass card shadow -180°.° .
165° magnetic compass bearing of Sun
-1.5° west variation
163.5°
127.9° true
35.6° west deviation (which is excessive)
Greg Rudzinski
From: Greg Rudzinski
Date: 2016 Mar 20, 17:28 -0700Bill,
If you have a GPS position and UT time of image then the reflected Sun or shadow on compass card can be checked with an azimuth reduction.
Greg Rudzinski
From: Bill Lionheart
Date: 2016 Mar 20, 17:18 -0700Took this this morning at 0907 in Hartlepool and thought folks might be interested. There is a huge error as we are next to a massive steel column that secures the pontoon. It should be 306 True 307 Magnetic.
Attached File:
