Ho 249 Sight Reduction Tables

Reference 21-9-2011

Celestial Navigation Explanation of the Worksheets Remare Astronavigatie Initiatief September 2011 1 Instrument and tables to be used Sextant Nautical Almanac for current year HO-249 Sight Reduction Tables Volume 1, 2 and 3 (Volume 3 updates every 9 years [Epoch]) In the worksheets the following ...

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Astro-Navigation Sight Reduction Form

Declination N S Latitude "Azimuth Angle (Z) Hc (decimal/249) True Alt. (Ho) True Azimuth (Zn) "d" corrn (249) Calc. Alt (Hc) Hc corr. (249) Intercept ... Astro-Navigation Sight Reduction Form Sextant Weather: Temp: Pressure: Wind Speed & Dir.: Name of Body GHA (hours) Sextant Alt. (Hs) DR/A Posn.

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PUB. NO. 249 VOL. 2 SIGHT REDUCTION TABLES FOR AIR NAVIGATION

PUB. NO. 249 VOL. 2 SIGHT REDUCTION TABLES FOR ... (Ho) 58 57 26 15 45 48 Intercept 5 away Zn 071° 17 towards Zn 302° 38 away Zn 240° Body Azimuth True

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CELESTIAL NA VIGAT ION

The author is partial to HO-249 sight reduction, ... $19.95 Volume 6 Latitudes 75°-90° #5906CE $19.95 DAVIS WORK FORMS These are designed to be used with standard 229 or 249 sight reduction tables.

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Introduction to Celestial Navigation

These days there is another popular option in the form of HO-249, the "Sight Reduction Tables for Air Navigation." These tables are slightly less accurate than HO-229 and are an interesting hybrid.

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Celestial Navigation CD Table of Contents

... 1968 106 SIGHT REDUCTION TABLES FOR ORBITAL PLANE DETERMINATION William P. Devereux Vol. 15, No. 4, ... Title Author *Issue 200 H.O. 249 AND THE NEW AIR ALMANAC John Dohm Vol. 3, No. 7, ...

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harbourfrontcent re.com/boating 416-203-3000 275 QueensQuay ...

From basic concepts to Sun-Run-Sun and more plus how tousea Sextant and the Sight Reduction Tables using HO 249. Prerequisite: Coastal Navigation Modules 1&2 CYA Intermediate Cruising ...

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GN-04 How to use a sextant-01

Davis Instruments publishes a complete set of work forms for the H.O. 229, 249 (Vol.1) and 249 (Vol. II-III) Sight Reduction Tables, with step - by-step instructions.

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A navigator remembers the 1976 yacht race

Many navigators used the "Air Tables" HO 249 which were designed for aircraft navigators and simpler to use, although less accurate. ... during a sight reduction.

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INTRODUCTION TO CELESTIAL NAVIGATION

With the prevalence of hand electronic calculators, the traditional methods of using sight-reduction tables with pre-computed solutions will hardly be mentioned here. I am referring to the typical Hydrographic Office methods H.O. 249 and H.O. 229.

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