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© Croydon Astronomical Society 2012 Croydon, Surrey, England, UK Registered Charity No. 251560


Croydon Astronomical Society
est. 1956


This page shows the programme of CAS and local astronomy events. You can include this CAS calendar in your personal Google calendar so you can be notified of updates and changes.

The BAA have a calendar showing night sky events and meetings.

Please check the recorded message on our Kenley Observatory telephone 020 8668 9642 for details of when the observatory will be open and information on the next lecture meeting.


You can embed the CAS Calendar into your personal Google Calendar by searching the list of Google Calendars for 'Croydon Astronomical Society'. In doing this you can also set the notifications so you get an email or a SMS text message when the calendar changes or new events are added.

Please suggest additional items, corrections or comments to the CAS webmaster.

If you wish to contact us by telephone please call our observatory telephone on 020 8668 9642 where you can leave a message and we will contact you soon.


Meeting at the Royal Russell School

 • The next meeting at the Royal Russell School is tonight Friday 17th July at 7:45 pm, when Konrad Malin-Smith will present a talk: ‘The Nature of Light and Time’: as his own introduction to relativity.

Kenley Observatory Opening

 • Our observatory at Kenley will be open tonight Saturday 18th June from 8:30 pm (subject to confirmation at 6 pm). The Moon will be a thin evening crescent and the planet Saturn is well placed to the south, though low in the sky. After the Moon sets the sky will be suitable to observe deep sky objects, although a thin crescent will contribute little to light pollution and will set before the sky is properly dark from 10pm.

  We otherwise use our observatory at Kenley, on some Friday nights for members only, and any Saturday night it is clear for the public as well. We notify here when this is the case.

We have hot water for drinks (please bring everything else) and wireless broadband, but no heating at the observatory.

Parking is best at the Kenley aerodrome memorial a few hundred metres to the south. Postcode for the observatory is:

CR8 5EP.

Note that there is no heating at the observatory so please dress warmly. The closest parking is at the WW2 memorial on Hayes Lane about 200 metres south of Waterhouse Lane.


Summer BBQ/Picnic and Solar Day, Sunday 21st June 2015

Our annual BBQ/Picnic was be held at our observatory on Sunday 21st June from 12pm midday for our annual combined BBQ/Picnic and solar day. This was in conjunction with the international SUNday event across the world. We will have a variety of telescopes, some solar telescopes and members are encouraged to bring their own instruments and join in.

  The society provided the basic BBQ grill, salad, bread rolls and soft drinks, and members asked to bring anything else to supplement, such as burgers to cook on the stove.

  The day started at noon with solar observing immediately and then the BBQ was lit as soon as someone was hungry (which was soon as it was lunchtime; we had enough charcoal to last until late).

  Facilities at the observatory are: hot water for drinks, wireless broadband and a portable type camping toilet with flush, located privately in a separate room.

  As well as the usual white light telescopes we had three 60mm Hydrogen-alpha (Ha) telescopes, seeing prominences, the chromosphere and activity on the solar disc itself. We also had a Calcium K-line telescope to see the Sun in the violet.

This is a good opportunity to bring along any telescopes and other equipment and between the knowledgeable members we'll be pleased to devote time to advise with setup and observing etc.


Total eclipse in London, the last one was 300 years ago on the 3rd May 1715.

Member Colin del Strother is a London Blue Badge Guide/ City of London Guide and will host a couple of free astronomyrelated

guided walks in the City on Sunday 3rd May. Details here.


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