Astronomy for Beginners

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

Astronomy Dictionary
Luminance

This is the name often given to the ‘light frames’ or exposures gathered from a monochrome CCD i.e. without colour.

Emission nebula

A cloud of interstellar gas that is being made to glow (emit). The emission is usually due to the strong radiation from hot young stars within the cloud or in its vicinity.

Stroboscopic imaging

A type of imaging technique that allows studies to be made of oscillating or pulsating celestial object such as a pulsar.

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