{"product_id":"celestial-navigation-the-minimal-manual","title":"Celestial Navigation: The Minimal Manual","description":"Enjoy learning the art of celestial navigation without delving too deeply into esoteric topics. A gentle introduction for beginners, but with valuable insights for more seasoned practitioners. Covers everything needed to understand the core concepts of celestial navigation and the basic procedures for plotting a position. Includes 3D color visual aids and step-by-step explanations of each type of sight reduction using the commonly used nautical almanac and Pub. HO 249 sight reduction tables. Can also be used as a quick reference with concise, color-coded instructions. This is the book used in John Kretschmer's celestial navigation course. More information is available at: https:\/\/steely.org\/celnav\nCovers: Greenwich hour angle, declination, local hour angle, altitude, zenith distance and azimuth Intercept Method and assumed position Geographical position, circles of equal altitude, lines of position, a-value How to use a Nautical Almanac and Sight Reduction Tables Angle and time math instruction Celestial and navigational coordinate systems Sextants and how to time a sight Detailed, step-by-step instructions for deriving sight reductions Estimating latitude and longitude with Noon sights Examples of sight reductions of the Sun, Moon, planets and stars How to plot lines of position, fixes and running fixes Includes easy-to-use sight reduction forms designed for novices Forms for noon sight, sight reduction, sight planning, and meridian passage of the Sun Instructions for using the Weems and Plath Star Finder 2102-d\u003cbr\u003eASIN: B08BV6Q6D1\u003cbr\u003eVSKU: BVV.B08BV6Q6D1.G\u003cbr\u003eCondition: Good\u003cbr\u003eAuthor\/Artist:Steely, Bruce|Kretschmer, John\u003cbr\u003eBinding: Paperback\u003cbr\u003e\u003cb\u003eNote:\u003c\/b\u003e Any images shown are stock photographs and product may differ from what is shown.  \u003cbr\u003e\u003cb\u003eCondition Notes\u003c\/b\u003e: The item shows wear from consistent use, but it remains in good condition and works perfectly. All pages and cover are intact  including the dust cover, if applicable . Spine may show signs of wear. Pages may include limited notes and highlighting. May NOT include discs, access code or other supplemental materials.  \u003cbr\u003e","brand":"Blue Vase Books","offers":[{"title":"Default Title","offer_id":43288569806909,"sku":"BVV.B08BV6Q6D1.G","price":24.01,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.bluevasebooks.com\/products\/celestial-navigation-the-minimal-manual","provider":"Blue Vase Books","version":"1.0","type":"link"}