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
Calcium-K

Calcium-K is a specific wavelength (roughly 393.3 nanometres) of ultraviolet light, emitted by calcium atoms that are missing one electron. Specific solar telescopes filter all of the Sun’s light apart from this particular wavelength.

Iridium flare

A bright flash in the night sky caused by sunlight glinting off solar panels of Iridium communications satellites. See www.heavens-above.com for details of when an Iridium flare will be visible from your location.

New General Catalogue (NGC)

The New General Catalogue is a listing of almost 8000 of deep-sky objects.

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