101![Build a Simple Sextant Purpose: To measure the height (altitude) of a celestial object above the horizon. To observe the apparent motion of stars, the Moon, planets, or comets by noting changes in altitude over a period Build a Simple Sextant Purpose: To measure the height (altitude) of a celestial object above the horizon. To observe the apparent motion of stars, the Moon, planets, or comets by noting changes in altitude over a period](https://www.pdfsearch.io/img/e46490535bc9f808bde177e8619039e0.jpg) | Add to Reading ListSource URL: solarscience.msfc.nasa.govLanguage: English - Date: 2006-04-21 12:57:30
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102![Procedure for Measuring the Altitude Using Two Theodolites Procedure for Measuring the Altitude Using Two Theodolites](https://www.pdfsearch.io/img/cbc007494461784e0698fd9462941545.jpg) | Add to Reading ListSource URL: endeavours.orgLanguage: English - Date: 2013-10-10 14:21:59
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103![Birriel and Adkins, JAAVSO Volume 38, [removed]A Simple, Portable Apparatus to Measure Night Sky Brightness at Various Zenith Angles Birriel and Adkins, JAAVSO Volume 38, [removed]A Simple, Portable Apparatus to Measure Night Sky Brightness at Various Zenith Angles](https://www.pdfsearch.io/img/a80891685fcbda8037d6833e8876adad.jpg) | Add to Reading ListSource URL: unihedron.comLanguage: English - Date: 2013-09-01 16:42:59
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104![Procedure for Measuring the Altitude Using Two Theodolites Procedure for Measuring the Altitude Using Two Theodolites](https://www.pdfsearch.io/img/fb783f192aa7b3c6596091e9049bcdad.jpg) | Add to Reading ListSource URL: endeavours.orgLanguage: English - Date: 2013-10-10 12:04:44
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105![CanVis Distance Calculations This document offers general guidelines on how to estimate the height of a feature or object in CanVis given its distance from the camera and actual height. Please note that there are many ot CanVis Distance Calculations This document offers general guidelines on how to estimate the height of a feature or object in CanVis given its distance from the camera and actual height. Please note that there are many ot](https://www.pdfsearch.io/img/85af801769929c29a2426f9ab5889e15.jpg) | Add to Reading ListSource URL: csc.noaa.govLanguage: English - Date: 2013-07-24 16:10:17
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106![A Navigation Solution Involving Changes to Course and Speed George H. Kaplan U.S. Naval Observatory Abstract In a previous paper [1], an approach to celestial navigation was presented that allows a vessel’s latitude, l A Navigation Solution Involving Changes to Course and Speed George H. Kaplan U.S. Naval Observatory Abstract In a previous paper [1], an approach to celestial navigation was presented that allows a vessel’s latitude, l](https://www.pdfsearch.io/img/753716eaed0374bd1d7e275259867cba.jpg) | Add to Reading ListSource URL: aa.usno.navy.milLanguage: English - Date: 2011-09-22 14:00:49
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107![The Motion of the Observer in Celestial Navigation George H. Kaplan U.S. Naval Observatory Abstract Conventional approaches to celestial navigation are based on the geometry of a stationary observer. Any motion of the ob The Motion of the Observer in Celestial Navigation George H. Kaplan U.S. Naval Observatory Abstract Conventional approaches to celestial navigation are based on the geometry of a stationary observer. Any motion of the ob](https://www.pdfsearch.io/img/831cc703dbddbb06cca5a8a6881a344f.jpg) | Add to Reading ListSource URL: aa.usno.navy.milLanguage: English - Date: 2011-09-22 14:00:49
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108![N G S G E O D E T I C TO O L K I T, PA R T 5 Horizontal Time-Dependent Positioning Richard Snay Estimated ITRF00 Horizontal Velocities N G S G E O D E T I C TO O L K I T, PA R T 5 Horizontal Time-Dependent Positioning Richard Snay Estimated ITRF00 Horizontal Velocities](https://www.pdfsearch.io/img/4682c2ff1aab7d0157f6f3e06aaa2cc0.jpg) | Add to Reading ListSource URL: geodesy.noaa.govLanguage: English - Date: 2012-10-24 15:16:20
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109![N G S G E O D E T I C TO O L K I T, PA R T 5 Horizontal Time-Dependent Positioning Richard Snay Estimated ITRF00 Horizontal Velocities N G S G E O D E T I C TO O L K I T, PA R T 5 Horizontal Time-Dependent Positioning Richard Snay Estimated ITRF00 Horizontal Velocities](https://www.pdfsearch.io/img/7e094c9a7582e7bb3d16ced764706ad8.jpg) | Add to Reading ListSource URL: www.ngs.noaa.govLanguage: English - Date: 2012-10-24 15:16:20
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110![Determining the Position and Motion of a Vessel from Celestial Observations George H. Kaplan U.S. Naval Observatory Abstract Although many mathematical approaches to the celestial fix problem have been published, all of Determining the Position and Motion of a Vessel from Celestial Observations George H. Kaplan U.S. Naval Observatory Abstract Although many mathematical approaches to the celestial fix problem have been published, all of](https://www.pdfsearch.io/img/a3a5bcbb68a30c9e46ac287a811878a5.jpg) | Add to Reading ListSource URL: aa.usno.navy.milLanguage: English - Date: 2011-09-22 14:00:49
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