- Ad-Hoc Observing
Not organised observing events, but rather an 'I'm going out tonight'
Large events that combine several talks, sometimes with trade stands, at an indoor venue
Educational events designed to help people get more out of astronomy
Large events with several attractions such as talks, trade stands, observing, workshops etc.
- Open Evening
An organisation opens to the public for the evening, usually to attract new members.
- Planetarium Show
- Public Observing
Larger events set up to allow members of the public, without registration, to come and observe
Social events for astronomers that don't necessarily involve doing any actual astronomy.
- Society Meeting
A meeting of an astronomy society
- Society Observing
Observing nights for members of an astronomical society
- Solar Observing
Daytime (obviously!) events involving observing or imaging the Sun.
Events that don't fall into any other category.
- Star Party
A residential event in which astronomers stay for a few days and observe in a dark-sky location
Talks and lectures about astronomy, space and science