NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Ho 208 question
From: Hewitt Schlereth
Date: 2014 Feb 24, 15:29 -0800
From: Hewitt Schlereth
Date: 2014 Feb 24, 15:29 -0800
What happens if you choose a longitude that makes LHA 359?
Gary,
It is not a question of whether you need H.O. 208 or not, rather how it should/could be used with an LHA of zero. Please send the LHA 360 page (as I now understand it, based on the pages you previously sent, there is an LHA 360 column but not an LHA 0 column) when you get a chance.
Stan
-----Original Message-----
From: Gary LaPook <garylapook---.net>
To: slk1000 <slk1000---.com>
Sent: Mon, Feb 24, 2014 3:12 pm
Subject: [NavList] Re: Ho 208 question
From: Randall Morrow <randall.f.morrow{at}kp.org>;
To: <garylapook---.net>;
Subject: [NavList] Ho 208 question
Sent: Mon, Feb 24, 2014 4:11:01 PM
The results have improved for my use of Ho 208 but an ususual case is giveing me trouble.
With a GHA of 478* 49.8 and assumed Lon of 118* 49.8 the LHA is 360 or zero.
My circa 1940 .pdf does not have a zero LHA column. If I use 360*60.0' the results are way off. Plugging my sight data into the Ho 208 calculator called "Celestial Tools" I got an intercept of over 1000 miles.Sight data:
Sirius
Date 22 Feb
Time 20-29-06 PDT
ZD +8
Hs 37*57.5 (Already corrected for AH use)
SHA 258* 33.21
GHA Aries 212* 58.5
Ref. -1.3
IC -0.4
USNO reduction shows Hc 37*56.1 and intercept of 0.3As a post script, does anyone have a .pdf version of Ho 208 that has the extra column headings at the top and bottom for 90-180, 180-270 etc.?
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