NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Equation for dip?
From: Luis T
Date: 2006 Sep 26, 07:11 -0000
From: Luis T
Date: 2006 Sep 26, 07:11 -0000
Peter Fogg wrote: > On 9/26/06, Andres Ruiz wrote: > > > > Dip an other equations for calculated the corrections for sextant > > altitude an obtain the observed altitude: > > http://www.geocities.com/andresruizgonzalez/celestial/Ho.html > > Where is found: > "D = 0.0293 * SQRT( h ) > where h is the height of the eye above the horizon in meters." > > So if the height of eye is, say, 3.5 metres; > 0.0293 * 1.8708 = 0.0548 > > Is there something I'm missing here? Surely the correct answer is 3.3 > minutes of arc? Yes, the result is in degrees, so 0.0548� = 0.0548 * 60 = 3.288 minutes of arc. Best wishes, LUis --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---