NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2017 Dec 7, 15:37 -0800
Chris,
I don't see any mistake. The assumed latitude for Pub 229 in your example has to be 44°north (not 44° 30' north) therefore your intercept will be 30 NM away from 44° north and 73° 18.7' west . The LOP plots right through your actual position of 44° 30' N 73° 15' W.
A further exercise for you would be to try a reduce by ex-meridian since you are only 2° from local apparent noon (LAN).
Greg Rudzinski
P.S. Not posted was some critical data: Date 20 August 2017 and Sun Hs by bubble octant (no limb used).
From: Chris Caswell
Date: 2017 Dec 7, 14:12 -0800Hi Robert,
Thank you for your offer - the sight info is as follows:
AP: N 44° 30', W 73° 15' (Actual position is N 44° 30.5', W 73°15.5')
Hs: 57° 40.5'
Ho: 57° 40' with refraction and parallax corrections
GMT: 17:04:31, no watch error
Dec: 12° 12.7'
GHA: 75° 18.7'
LHA 2° whole integer, actual 2° 3.7'
Zn: 183.7°
Hc Final: 58° 10.1'
Chris in VT
