**5. Conclusion**

The direct measurement of the absolute rotational components with linear changes of the accuracy form 5.1·10-9 to 5.5·10-8 rad/s, for the detection frequencies range from 0.83 to 106.15 Hz is the main advantage of the presented system AFORS. As shown in the first field test, the system type AFORS appears as the promising device to study both the seismic field generated by earthquakes at least at local distance range, and the reaction of buildings and other constructions to strong motions. In the first domain however, the whole detecting/registering system needs further studies – especially, the recordings analysed both in the low frequencies, below 3 Hz and in the relatively high frequencies, from 18 Hz upwards seem to contain too much noise. But most probably, at least part of this noise comes to the equipment from outside. Therefore, also the conditions at the Książ observatory should be checked again, despite that for other scientific equipment, as the regular seismic station KSPROT, these corridors (excavated by the slaves under German supervision during the second world war) provide the satisfactory environment.

#### **6. Acknowledgment**

This work was done in 2011 under the financial support of the Polish Ministry of Science and Higher Education under Key Project POIG.01.03.01-14-016/08 "New photonic materials and their advanced application" and partially the Military University of Technology statutory activity No PBS-829.
