A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding
From: Alexandre Eremenko
Date: 2017 Mar 18, 14:08 +0000
Using your sextant, you will probably unable to see the Moon until it partially overlaps the Sun. After this happens, you can measure the distance to the far limb, and process it as a normal lunar. If in your location the eclipse is complete, it will be much easier just to time the beginning or the end of the full phase. Alex. ________________________________________ From: NavList@fer3.com [NavList@fer3.com] on behalf of Paul Hirose [NoReply_Hirose@fer3.com] Sent: Saturday, March 18, 2017 2:18 AM To: eremenko---.edu Subject: [NavList] Re: Solar Eclipse Aug 21 On 2017-03-17 17:18, Brad Morris wrote: > > I wonder if the tools will work for this lunar? Is there some way to > predict the path where the LD is 0? Of course, that's along the path of > totality, but since we just care for contact, not coverage, the path of > 0 LD must be fairly broad as compared to the totality path. http://astro.ukho.gov.uk/eclipse/0412017/ The medium gray area is the zone where the 1st and 4th contacts are visible, i.e., the beginning and end of a partial eclipse. It emcompasses Greenland, Canada, the US (except Hawaii), Mexico, and more.