British Astronomical Association
Supporting amateur astronomers since 1890

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BAA Tutorials

BAA Tutorials

Filters for visual observations of deep sky objects
Intermediate
BAA Sky Notes
Understanding image defects (part 1)
Starting Out
Atmospheric Refraction
Intermediate
The Barlow lens
Intermediate
Observing asteroid occultations with digital cameras
Intermediate
What's the best telescope for an adult beginner?
Starting Out
Absolute Beginners no.14: Astronomical ‘seeing’
Starting Out
The size of things
Starting Out
Kitchen table collimation of a Cassegrain-type reflector
Intermediate

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