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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: slide rule sight reduction accuracy
From: Hein Bodahl
Date: 2009 Aug 13, 12:40 +0200
From: Hein Bodahl
Date: 2009 Aug 13, 12:40 +0200
On 19.06.2009 12:50, Gary LaPook wrote: > Here is the form I had meant to send. This uses my notation of "W" > instead of Bygrave's "y" on the previous form. > > gl If it could be of use. I have attached a compiled workform based on the one from Geoffrey Kolbe's "Long Term Almanac" to calculate declination and LHA, and yours to work out the Hc and Zn from the flat Bygrave. I got it to fit on one page with some space to scribble. I have laminated it and use a whiteboard pen to fill it in. Using matte lamination you could probably use a soft pencil. The colors match the colors I have added to the headers from the tables I have scanned from the "Long Term Almanac" (not attached, get it yourselves :-) ). The whole set including the Bygrave fit on 9 sheets. (I have made sure it is ok with mr. Kolbe to post the workform as it is partly copied from the "Long Term Almanac".) Hein --~--~---------~--~----~------------~-------~--~----~ NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
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