Glossary

Magnification is the ability of a telescope to magnify an object. A lot of observers, not only beginners, don’t understand…

The light gathering power (also light grasp) is an ability of a telescope to collect more light than the human…

In astronomy, the magnitude refers to a logarithmic measure of the brightness of a celestial body. The larger the magnitude…

A secondary mirror is a small mirror element in reflectors and catadioptric telescopes. It is used to bounce the light…

A finderscope is a device found on top of a primary telescope. It is used for manually aiming the telescope…

Tracking is a phrase in astronomy, which means that a telescope sited on mount can follow the object as it…

With a motor-driven mount, it is essential to know all astronomy terms. The difference between the terms tracking and guiding…