  In the framework of the approach of Dyson megastructures, by assuming that a
super-advanced civilization exists and is capable of constructing a ring-like
megastructure around their host star, we have considered the observational
signatures of cold (300 K) and hot (4000) K astro-engineering to answer the
question: are the modern facilities capable to detect theoretically predicted
fingerprints? By implying the spectral resolving power and the radial velocity
methods it has been shown that the oscillation of the rings might be detected
as anomalous variability of the megastructures.
