The Croydon Astronomical Society is registered as a Charitable Incorporated Organisation - 1187803

Croydon Astronomical Society

The Society holds public talks at our new venue - the Sandison Room in Trinity School, Shirley Road, Shirley Park, Croydon, CR9 7AT. These are held approximately every other Friday during school term time and are open to the public. We plan to re-start our talks in September.

We also have an observatory, near Kenley historic aerodrome. There is a clubhouse for visitors and a kitchen for hot drinks (but no toilets).

We try to open to the public (free, no need to book) on any Saturday night when it is clear.  Information will be posted here and also on the society's Facebook page

Parking (observe restrictions) is nearby in Hayes Lane just a couple of hundred metres to the south at the Royal Air Force Kenley Tribute.

We sometimes open the observatory on other days/nights, for example for solar viewing.  Click HERE for any upcoming events.

Click HERE for location and rules while on the site and click HERE to see if we are open this Saturday.

You can book a Group Visit for groups of children (school groups, scouts, cubs etc) or adults. These are normally arranged during the week.  We are now taking bookings for group visits.  There is a small charge for this. Click HERE for further details or to make an enquiry.

Thinking of buying a telescope or just got one and want help setting it up?  We can probably help. Contact us.

Is the observatory open?

Meetings & Public talks programme

How can I contact you?

The Croydon Astronomical Society is a registered charity based in the London Borough of Croydon.  All are welcome to  join; we don’t charge a membership fee.  Our objectives are:

To advance education in the science of astronomy and related subjects for the public benefit in Croydon and the surrounding area by


If the skies are clear next Sunday evening (19th Sept) join the astronomers from the CAS for a Harvest Moon themed walk around the perimeter track of historic Kenley Aerodrome.

Sunday 19th September we will meet at 7:30pm beside the RAF Tribute.

We will walk as the evening twilight deepens and the Harvest Moon rises in the South East to light our way.

Learn why the Harvest Moon was important to our farming ancestors and what makes it special. As the stars and constellations appear we will guide you around the sky. Afterwards we will have a telescope or two to look at the Moon and also Saturn & Jupiter.

We will only be there if the weather is clear, we will post on Facebook but please also look out and make your own judgment.

The evenings can be chill, please dress warmly, and wear appropriate footwear. A torch would be useful but we will try to walk by the light of the Moon.

This is our first time of running such an event, if you are interested in coming please send us a comment so we can judge the level of interest.

All are welcome, including accompanied children or pets. The perimeter track is 1.8 miles long if you have not walked it before and will be a gentle pace of about an hour.