What is the manifestation of a "quasar" at z > 10¹⁰ ?

The process of forming an image of a cosmological point source (CPS) in condition of high optical depth is considered accounting for all types of interactions. It is shown that the energy conservation law causes the size of this image which is keeping constant over all redshifts of the CPSs. This effect must be taken into account for the consideration of the angular power spectrum of the CMBR. In particular, distant point sources and small scale fluctuations which were damping before recombination will contribute their energy in the region of angular scale \theta_0 \approx 20'.