||B. Hofmann-Wellenhof, K. Legat, M. Wieser
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Several years ago, I decided to extend my teaching activities beyond the high-precision geodetic methods by including navigation. To cover this wide area, a combined effort of several persons was necessary to offer the first course on navigation. These lectures were tuned and matured year by year. When producing the manuscript for the students, the idea of writing a book on navigation began to develop. In 1998, Herbert Lichtenegger, Manfred Wieser, and I worked out the first structural concept together with an ambitious time schedule. Significant administrational duties at our university prevented a proper progress. Particularly Herbert Lichtenegger, already close to his retirement, was strongly involved in management tasks of our institute. A delay of the intended book release was the consequence. Even more, when Herbert Lichtenegger had retired, he asked for a replacement by another author. Klaus Legat, a young scientist, took over not only Lichtenegger's university position but also his tasks concerning the book - with one exception, the chapter on celestial navigation. We, the new triple of authors, could convince Herbert Lichtenegger that we need his experience for a contribution on this topic. Even more, we managed to involve him as an overall supervisor.