Achromatic refractors are two-lens systems and already offer a good sharpness and also a quite good contrast. The construction makes these refractors to very good beginner telescopes.
An achromat is the first telescope for many astronomy beginners. This type of telescope convinces by an easy handling and a decent optical performance in the sky. With an achromatic refractor you can also do day observation, landscape photography and also astrophotography very well.