NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Antoine Couëtte
Date: 2011 Dec 9, 09:06 -0800
RE : [17565] Re: Celestial Coordinator
From: bernecky---net
Date: 7 Dec 2011 08:58 (see referenced post quoted at the end of this current post)
===========================================================================
From Mauritius Island,
Hello to all,
Thanks for the referenced details about the site to upload the 2002 Bowditch Edition. I find this document excellent as usual !
However, just for fun, I tried to quickly "rework" their Kochab-Spica example (paragraph 2006) given on pages 301 and following ones :
The Bowditch published final results are as follows :
Kochab Intercept : 5.2 NM towards / True Azimut 018.9 degrees , and
Spica Intercept : 20.2 NM Towards / true Azimut 143.3 degrees.
Working on the very same exmaple, I find :
Kochab 11.5 T / 018.7 degrees , and
Spica 22.1 T / 143.3 degrees .
Quite unexpected and huge difference ...
Am I missing something ?
Best Regards, and thanks to whoever might shed some light here.
Kermit
Antoine M. Kermit Couëtte
===========================================================================
Bowditch Chapter 15 Navigational Astronomy has a section that appears pertinent. Though it isn't an instruction manual, it might have enough information to reverse engineer the instructions. Bowditch is available on-line at
http://msi.nga.mil/NGAPortal/MSI.portal?_nfpb=true&_pageLabel=msi_portal_page_62&pubCode=0002
----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------
----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------