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Institute of Astronomy Public Open Night

Institute of Astronomy Public Open Night

Wednesday 28th December 2022 from 19:15pm to 21:00pm

Cambridge Observatory - Institute of Astronomy
University of Cambridge, Cambridge, Cambridgeshire, CB3 0HA

This free event is one of the regular weekly public open evenings at Cambridge University’s Institute of Astronomy every Wednesday evening from October through to March. The entrance doors open at 18:45, 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 the 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 30-minute presentations are suitable for children; however, they can leave if they become restless. Observing using the telescopes is subject to favourable weather conditions.


Event organiser

Institute of Astronomy at University of Cambridge

Institute of Astronomy at University of Cambridge is organising this event

Please contact Institute of Astronomy at University of Cambridge directly for more details regarding this event or, if appropriate, contact the event venue.


Event booking

For full details on how to attend this event, including how to book, please see the event's official website.

Visit event website

Event darkness

The Moon has a big impact on the visibility of celestial bodies in the night sky. Try to plan your stargazing when there is no bright Moon at night as this is when the skies will be at their darkest.

The below chart shows if and when the skies will be at their darkest during this event. Moonlight is shown in light yellow and the Sun's twilight in light blue. Midnight on the date shown is shown as a white line with sunset to the left and sunrise the next morning to the right. A black background with stars shows the best times for stargazing.



Forthcoming events

Below is a list of events at Cambridge Observatory - Institute of Astronomy. View these events on a calendar.

  • Cambridge Young Astronomers (7 to 11 year olds)

    Saturday 28th May 2022 from 10:00am to 12:00pm

    Cambridge Observatory - Institute of Astronomy, Cambridge, CB3 0HA

    More info
  • Cambridge AstroPlus

    Monday 6th June 2022 from 19:15pm to 20:45pm

    Cambridge Observatory - Institute of Astronomy, Cambridge, CB3 0HA

    More info
  • Webb Deep Sky Society Annual Meeting 2022

    Saturday 18th June 2022 from 09:30am to 16:45pm

    Cambridge Observatory - Institute of Astronomy, Cambridge, CB3 0HA

    More info
  • Cambridge Young Astronomers (7 to 11 year olds)

    Saturday 25th June 2022 from 10:00am to 12:00pm

    Cambridge Observatory - Institute of Astronomy, Cambridge, CB3 0HA

    More info
  • Cambridge AstroPlus

    Monday 4th July 2022 from 19:15pm to 20:45pm

    Cambridge Observatory - Institute of Astronomy, Cambridge, CB3 0HA

    More info
  • Cambridge Astronomical Association speaker meeting

    Friday 15th July 2022 from 20:00pm to 21:30pm

    Cambridge Observatory - Institute of Astronomy, Cambridge, CB3 0HA

    More info

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