The Sky Disk of Nebra Reveals Its Secrets

The paper presents the method and results of decoding the content on the Sky Disk of Nebra. It has been shown that the symbols found on it, suggesting the Sun, the Moon and the solar barge are only geometric figures facilitating the recording of astronomical knowledge. The paper first defines a polar system on the horizon plane. This system describes the range of the directions of sunrise and sunset in the annual period and the Moon in the 18.61-year cycle. It turned out that astronomical knowledge was recorded on the surface of the disk on two planes: horizontal and perpendicular one (the meridian plane). With the help of geometric constructions located on the meridian plane, it was possible to decode the range of changes in the altitude (zenith distance) of the Sun in the annual period, at the time of its upper culmination. Also, using two different geometric structures, the range of changes in altitude (zenith distance) of the Moon at the time of its upper culmination in the 18.61-year cycle was decoded

Optical fixing the positions of the off-shore objects applying the method of two reference points

The Paper presents the optical method of fixing the off-shore objects positions from the land. The method is based on application of two reference points, having the geographical coordinates defined. The first point was situated high on the sea shore, where also the camera was installed. The second point was intended for use to determine the topocentric horizon plane and it was situated at the water-level. The first section of the Paper contains the definition of space and disposed therein reference systems: connected with the Earth, water-level and the camera system. The second section of the Paper provides a description of the survey system model and the principles of the Charge Coupled Device - CCD array pixel’s coordinates (plate coordinates) transformation into the geographic coordinates located on the water-level. In the final section there are presented the general rules of using the worked out method in the optical system.