The prospects for observations of gravitationally lensed extragalactic sources in the far-infrared and submillimeter ranges of the electromagnetic spectrum by the planned space observatories with active cooling of the telescope mirror to cryogenic temperatures are considered. The possibility of solving topical cosmological and astrophysical problems related to the observations of gravitationally lensed sources is discussed. The number counts of lensed sources have been performed for various wavelengths in the range from 70 to 2000 µm. The redshift and magnification distributions of lensed sources and the mass distribution of lenses have been obtained. We have constructed model photometric sky maps for which the contribution from lensed sources has been calculated for the first time.

中文翻译：

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亚毫米空间天文台对重力透镜源的观测前景

考虑了通过计划中的空间天文台将望远镜镜主动冷却至低温而在电磁光谱的远红外和亚毫米范围内观测引力透镜外银河源的前景。讨论了解决与重力透镜源观测有关的局部宇宙和天文学问题的可能性。已对70至2000 µm范围内的各种波长进行透镜光源的数量计数。已获得透镜源的红移和放大倍率分布以及透镜的质量分布。我们已经构建了模型光度学天空图，首次计算了透镜源的贡献。