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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re : A noon sight conundrum
From: Zorbec Legras
Date: 2003 Nov 24, 13:30 -0500
From: Zorbec Legras
Date: 2003 Nov 24, 13:30 -0500
----- Original Message ----- From: "Noyce, Bill"Date: Mon, 24 Nov 2003 10:28:13 -0500 To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM Subject: Re: FW: A noon sight conundrum > Since the sun's declination is > usually changing slowly > This effect is too small to have any practical effect on finding > longitude, as far as I know, but the similar effect that arises > when you observe from a vessel travling north or south needs to > be taken into account. > -- Bill There is a formula to correct the problem of observing the sun by a mouving observer: T0 = ((T 1 + T2) /2) + correction correction = 15,28 * ( motion in Lat - motion in dec )*(tan Lat 1 - tan dec 1) But for some, it is may be not logic enought... -- ___________________________________________________________ Sign-up for Ads Free at Mail.com http://promo.mail.com/adsfreejump.htm