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

waypointamsterdam.com

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.

www.celestaire.com

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.

www.zetatalk3.com

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, ...

www.ion.org

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.

www.thepirateking.com

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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