NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sight Reduction Form With No Duplication?
From: Jeremy C
Date: 2008 Jun 25, 23:05 EDT
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From: Jeremy C
Date: 2008 Jun 25, 23:05 EDT
My rote memory "forms," for both 229 and 249, have one duplication
copying only Ho from the Hs-Ho line to below the Hc line to get intercept.
I suppose I could forgo this duplication, but it would be a bit more mentally
taxing to look at numbers from either different columns or far down the same
column (I often do one or the other). Otherwise I do no other
duplications.
I tend not to use pre-made forms as I find them limiting for different
kinds of sights. I pretty much run along for what I need to do and adapt
as necessary. For example, for a sunline verses an ex-meridian, I need to
calculate LHA (or t) for both and use the same basic "form" but I don't
pre-print anything to accomplish this task, as it varies from there.
I just "download" it from my head for each kind of sight. The only
"form" I use these days is a Bruce Starke Lunar as I am too much a newbie with
them to memorize the form yet.
If you'd like, i can try and photograph or scan one of my nav notebook
pages to show you how I do it.
Jeremy
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Navigation List archive: www.fer3.com/arc
To post, email NavList@fer3.com
To , email NavList-@fer3.com
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