The purpose can then be made use of like a base for further observations. Survey-accurate astronomic positions were difficult to notice and determine and so tended to become a foundation off which a number of other measurements had been built. Given that the advent on the GPS program, astronomic observations are rare as GPS lets satisfactory positi… Read More


The purpose can then be used being a foundation for even more observations. Survey-accurate astronomic positions had been tricky to observe and estimate and so tended for being a foundation off which a number of other measurements were being created. Given that the appearance from the GPS system, astronomic observations are rare as GPS will allow s… Read More