NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Exercise #11 AM star fix
From: Mike Burkes
Date: 2008 Jun 7, 13:06 -0700
From: Mike Burkes
Date: 2008 Jun 7, 13:06 -0700
Wow, quite a workout I love it! It occured to me that only 2 of the 6 sites were HO 249 eligible and my HO 229 did not cover that band. BTW even though not technically a nav calculator my Casio fx-115MS does quite the job. To what I can tell the resulting fix triangles are quite large( not intended to disparage the navigator!) and it seems the triangle vertex angle bisectors produce my best fix estimate. Am I getting the idea? Thanks much and keep 'em coming! Do those nav programs also produce the plot? If they do I would appreciate anyone displaying them. Mike Burkes 626-833-1521 > > Exercise #11 AM Star Fix. > > On 29 May 2008 (local date), a ship was sailing course 158 degrees > True at a speed of 14.7 knots. Around 05h 25m ZT (ZD -10), a round of > sights was taken. The DR is Latitude 14deg 56� North, Longitude > 145deg 07.5� East. Height of eye is 106 feet, Temp/Press is 82 F/ > 1010 MB. Index Error is 0.0. > > Here is the sight information, all times in _Zone Time_. > > Alpheratz: Hs : 49deg 05.8� @ 05h 13m 38s > > Fomalhaut: Hs 40deg 09.4� @ 05h 15m 58s > > Vega: Hs 45deg 59.6� @ 05h 20m 08s > > Deneb: Hs 58deg 16.8� @ 05h 21m 35s > > Jupiter: Hs 43deg 52.4� @ 05h 22m 31s > > Moon (LL): Hs 59deg 45.4� @ 05h 24m 43s > > > Determine a star fix at 05h25m local time. > > Jeremy > > > _________________________________________________________________ Instantly invite friends from Facebook and other social networks to join you on Windows Live� Messenger. https://www.invite2messenger.net/im/?source=TXT_EML_WLH_InviteFriends --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
