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About the application:

Astronavigation, no thanks, it belongs in a museum a long time ago. But this is wrong. In the museum belongs the extremely tedious and still widespread graphic-based intercept way of Saint Hilaire. It would be stupid and at the same time negligent to surrender completely to a system that although quick, precise and comfortable to use, was made by humans and to completely dispense with the sun as a reliable tutorial. The sea is not a secure place. With this apk on a smartphone or phone, astronomical navigation is almost as simple as satellite navigation. However, you need a sextant because the sun does not transmit its distance to the observer's position by radio signal. Only satellites can do that. With satellites, a place can be determined every second and very accurately, which is not possible with the sun. But that is not necessary on long sea voyages. In the past, ships also sailed and found their destination. With the sun, navigation is secure because it cannot be confused with any another star. Moreover, it has always been the most necessary navigation star for sailors, accounting for more than 90 % of all positioning. Stars can only be observed during the short periods of twilight, because only then can the horizon still be seen. The function of the apk is based on a work by the popular German mathematician Carl Friedrich Gauss. Anyone can learn to use it intuitively in a few mins. Except for the need to use a sextant, it is comparable to satellite navigation on a chart plotter. A Nautical Almanac is not needed and the correction of the sextant reading is done automatically. An upper limit in the altitude of the sun to be measured does not have to be respected and a dead reckoning place is unnecessary. An player does not need to have any knowledge of mathematics or astronomy and he does not need to draw anything or write anything down. To determine a place, it is only important to enter the altitude of the sun read from the sextant at two various times. Compared to all another classical navigation ways, the Gauss way has the greatest accuracy. Position deviations are mostly caused by inaccurate data of heights and times. The apk is suitable as a backup in case satellite navigation is not accessible. With a cheap plastic sextant and this apk, every skipper has an emergency navigation system that can be used immediately to safely arrive at any destination. Anyone who prefers to search their method on long voyages with the assist of nature and focus their attention more on their surroundings than on a chart plotter can finally do so with this apk, without having to solve complicated formulas, create drawings or find around in tables. The functions of the apk are: 1. Circle of position navigation 2. Taking into acc change of places 3. Sun almanac with <0.4' accuracy 4. Automatic correction of sextant reading 5. Observations over 1 following day 6. Basic globe map 7. Observation at the lower sun limb 8. Display of DR the position The professional ver has the following extra functions: 1. Parallel full-fledged second system for any input 2. Inclusion of the noon latitude 3. Dead reckoning module for recording changes of location 4. Sun almanac with 0.1' accuracy 5. Observations over 3 following day 6. Download high resolution maps 7. Observation also at the upper sun limb 8. Measurement of distance and course to a target 9. Scale display at <50 NM zoom level 10. Continuous display of DMG, CMG and VMG