Shop at Amazon US


If you like the website and want to contribute to the running costs then please do so below. All contributions are most welcome.

PayPal - The safer, easier way to pay online.

A refracting telescope that uses at least three quality lenses to achieve an image that's almost completely free from false colour. This type of lens has better correction of chromatic and spherical aberration than more common and cheaper achromatic lenses. It's brings red, green and blue light to the focus at the same point. Expensive high-end refractors use apochromatic lenses.

Glossary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z