Prospects of SETI by small size optical telescopes

Abstract

In the present manuscript we consider the possibility of SETI by the small size (with diameters less than 1 m) optical telescopes. Calculations are performed for parameters of a facility of Abastumani Astrophysical Observatory: AZT-14, Cassegrain Reflector with a parabolic mirror. In particular, we show that the techno-signatures of Type-2.x and Type-3.x civilizations might be detected. It is demonstrated that it is possible to detect as hot megastructures (up to 4000 K) built around main sequence stars and pulsars as well as von Neumann extraterrestrial probes.

SETI in 2021

“…Osmanov (2021a) concluded that Galactic and extragalactic self-replicating von-Neuman probes might be detectable with FAST. Osmanov & Berezhiani (2021) assessed the capability of 1-meter-scale optical telescope to detect hot megastructures around stars, both via thermal emission and optical variability.…”