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Re: Ho 208 question
From: Gary LaPook
Date: 2014 Feb 24, 12:08 -0800

Um, you do realize that with an LHA of zero you don't need HO 208, you just do the normal noon sight computation. Simple addition and subtraction.

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From: Randall Morrow <randall.f.morrow@kp.org>;
To: <garylapook@pacbell.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 0.3 As 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.? ---------------------------------------------------------------- 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 ----------------------------------------------------------------

: http://fer3.com/arc/m2.aspx?i=127006

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