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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.


Kenley Observatory Opening

Our observatory at Kenley will be open this Sat 29th May from 9pm. The planets Jupiter and Venus both are well placed in the western sky, and Saturn is now visible from before 9pm and rising earlier and higher each night. Comet Lovejoy will be easy to see to the north in binoculars, very close to Polaris, and a couple of large instruments will be available tonight. The Moon is just past half so very good for observing or imaging. Wind is already reducing and will be very light, though the temperature is lower for the time of year.

Meeting at the Royal Russell School

The next meeting at the Royal Russell School be on Friday 5th June at 7:45 pm, when Roy Easto will present a talk ‘the Genesis of the Moon’.

 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 24th Aug 2014

Our annual BBQ/Picnic was held on the above date at our Kenley observatory. It was combined with a solar observing day. The expected weather was dry, light winds but little sunshine.

This is a regular event and the usual format is for the society to provide the bread, soft drinks, salad, BBQ grill and hot water, with members bringing any other food and drink they wish, such as burgers to cook on the stove. We have found this format to be safe, and convenient if we have bad weather.

The solar observing started from midday and the grill was lit around early afternoon. The event will continue up to dark but the skies were not then clear.

As well as the usual white light telescopes we had three Hydrogen-alpha (Ha) telescopes, capable of 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 was a good opportunity to bring along any telescopes and other equipment and between the knowledgeable members we'll be pleased to devote some time to advise with setup 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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