Glossary – Telescopes

Barlow lens

  • Maja 

Magnification of telescopes is calculated by dividing the objective focal length with the eyepiece focal length. To change the magnification, a different eyepiece must be… Read More »Barlow lens

Finderscope

Finderscope

  • Maja 

A finderscope is a device found on top of a primary telescope. It is used for manually aiming the telescope to the desired celestial object.… Read More »Finderscope

Tracking

Tracking

  • Maja 

Tracking is a phrase in astronomy, which means that a telescope sited on mount can follow the object as it moves on the night sky.… Read More »Tracking

guiding

Guiding

  • Maja 

With a motor-driven mount, it is essential to know all astronomy terms. The difference between the terms tracking and guiding can be very confusing for… Read More »Guiding