<title>Problems in designing the 25-m-class supertelescope</title>

Abstract

The development ofthe largescale telescope building is pressingly putting the question ofthe 5-Th generation supertelescope development with 25m diameter primary mirrow, having penetrating ability about 29 magnitude. The volume of information obtained on the supertelescope, will allow to expand the idea about the Universe origin and evolution greatly. On the basis ofthe system analysis ofthe technical and explotation requirements, and also the trends of the modem optical building, the main problems have been formulated concerning the question ofthe 25m class supertelescope development, and the ways oftheir solution as well the concept and the variant of the supertelescope construction have been proposed, that combine a number of original schematic, constructive and technological solutions with the application of linear adaptive methods and devices. The ground-based athptive supertelescopes ofthe given concept have unique possibilities in the field ofthe fundamental researches. They decrease withdraw the acuteness ofthe problem solution, connected also with the necessity of space telescope development, and they save large sums of money as well.