Catadioptric telescopes correct some of the visual problems found in these older styles – such as chromatic aberration – but they tend to be a little more expensive. Reflectors are usually ...

Catadioptric, or compound, telescopes incorporate a primary mirror coupled with a corrector lens placed at the front of the tube. The primary mirror's curve is ground to a simple shape ...

Planetarium curator Babul Chandra Bora said out of the four telescopes purchased, one is catadioptric, one is reflecting and the other two are of the refracting type. The planetarium's official ...