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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Index Error
From: Gary Harkins
Date: 2004 May 5, 19:05 EDT
From: Gary Harkins
Date: 2004 May 5, 19:05 EDT
In a message dated 5/5/2004 10:21:53 AM Eastern Standard Time, enoid@NUNANET.COM writes:
I am baffled. Additional comments welcome.
Another source of error could be refraction. When calculating the semi-diameter you should do it holding the sextant horizontal. This eliminates the refraction difference between the upper and lower limbs.
Gary Harkins C400 #140 "Cygnus"
Website http://www.hometown.aol.com/htycgary/myhomepage/index.html
Harbour Towne Marina, Muskegon, Michigan Slip C-28
Harbour Towne Yacht Club, Life Member
C400 National Association
United States Power Squadrons-JN
NRA Life Member
MCRGO (Michigan Coalition for Responsible Gun Owners)
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Website http://www.hometown.aol.com/htycgary/myhomepage/index.html
Harbour Towne Marina, Muskegon, Michigan Slip C-28
Harbour Towne Yacht Club, Life Member
C400 National Association
United States Power Squadrons-JN
NRA Life Member
MCRGO (Michigan Coalition for Responsible Gun Owners)
JPFO (Jews for the Preservation of Firearms Ownership)