In this work we present an experimental demonstration of the comparative study of imaging quality of one of the non-uniform sized (NUS) optically-sparse aperture (OSA) mirror configurations - the ...

The Vaonis Vespera II, priced at $1,590, redefines tabletop telescopes with its smart, automated design. Its 50mm aperture ...

Compound, or catadioptric, telescopes combine lenses and mirrors for a compact option, suitable for both planetary and ...

Sometimes, in order to support an idea, you first have to discredit alternative, competing ideas that could take resources ...