Institute of Astronomy Public Open Night

Wednesday 17th February 2021 from 18:45pm to 21:00pm

Cambridge Observatory - Institute of Astronomy

University of Cambridge, Cambridge, CB3 0HA


This free event is one of a regular weekly public open evenings at Cambridge University's Institute of Astronomy that take place every Wednesday evening each year from October through to March. The entrance doors open at 18:45pm with seating in the main lecture theatre on a first come basis (there is also an overspill room).

These events offer a fantastic opportunity to look through the institute's large Northumberland and Thorrowgood telescopes from within the observatory. Members from Cambridge Astronomical Society will also be on hand with their telescopes.

Events go ahead no matter the weather with an Astronomer from the Institute presenting a half-hour talk even if the evening is cloudy.  Most of the 30 minute presentations are suitable for children however there is the option to leave if they become restless. Observing is subject to favourable weather conditions.

- Event includes an astronomy related presentation or talk.

- Event will involve stargazing and observing the skies through telescopes weather permitting

Corona virus

Please be aware that due to the Coronavirus it is likely that this event has been cancelled or postponed. If you are considering attending this event please double check with the event organiser directly to confirm. If this event is indeed affected the organisers will no doubt need your support in the future -- please do consider attending an event of theirs when possible! Thank you!


This online event is being organised by Cambridge Astronomical Society who should be contacted if you have any queries. If you do attend this online event it would be great if you could let the organiser know you found out about it via Go Stargazing, thank you!


Admission to this event is free of charge and only groups larger than 15 people need to book in advance.

Go to the organiser's web page for this event

Location light pollution

This location is estimated to have light pollution levels similar to a urban setting based on satellite data from CPRE.

Dark site
The above demonstrates the estimated effect of light pollution - graphics created using Stellarium.

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