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
OIII filter

This is a special filter designed to let through a very specific wavelength of light emitted by oxygen in nebulae. It can help filter out light pollution and improves the view of objects such as planetary nebulae.

Danjon scale

A method of measuring lunar eclipse brightness, ranging from 0-4, darkest to brightest respectively. The Danjon scale is represented by the letter L.

Meridian flip

This is the process that equatorial mount owners have to go through to make sure that their equipment doesn’t collide with a pier or other obstruction as it tracks across the night sky.

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