Astronomy for Beginners

New to astronomy? Not sure how to get started in stargazing or which telescope to buy?

Here’s where you’ll find observing guides, how-to articles and great astronomy hints and tips. Don’t forget to check out our comprehensive astronomy dictionary.

Astronomy Dictionary
Tube rings

Rings that attach to a telescope’s mounting plate (see dovetail plate) and hold the tube assembly in place.

Active galactic nucleus

The centre of a galaxy, which emits large amounts of energy as electromagnetic radiation. Such objects are thought to be powered by matter falling on to a supermassive black hole.


A satellite of a small celestial object, such as a dwarf planet or an asteroid.

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