Calling all members to come up with a witty and/or clever caption to go with the image opposite of our Public Events Organiser, Theresa Cooper, and our sombrero-wearing Secretary, Michael Foley, taken at the solar observing event held at Brecon Beacons on 23 June - see here. Entries should be sent to by no later than Monday, 17 September 2018. The winner - to be chosen by Theresa and Michael - will receive a cheque for £15.


Hunting Outbursting Young Stars with the Centre of Astrophysics and Planetary Sciences

This Citizen Science project aims to work together with amateur astronomers in the long-term photometric monitoring of young stellar clusters to find outbursting objects for detailed follow-up study. Dirk Froebrich of the University of Kent (who will be giving a talk to the Society about this project in November 2018) has asked whether any CAS members (who are not already signed up to the project) would be able and willing to help with making observations during a special observing campaign for an interesting object that the project team has recently discovered. The campaign will run from 1st August to 15th September 2018. Further details can be found here.


The Cardiff Astronomical Society (CAS) is a thriving society located in South East Wales. It has been in existence for over 40 years and is one of the largest amateur astronomical societies in the UK. CAS continues to provide a range of facilities for both Society members and the public at large including a varied programme of talks on Thursday evenings (except in August) at the Physics and Astronomy Department of Cardiff University. In addition, regular night sky (and occasional solar) observing sessions are held at the Society's own Observatory at Dyffryn Gardens.

Our members come from all walks of life and their knowledge of astronomy ranges from complete beginner to advanced. You don't need any specialist knowledge to join us and neither do you need to own a telescope or binoculars. It's also possible to try us out before joining!

More details about the Society and what it does are available here

We are keen to get more Society members on board to assist with the running of CAS events - please see here how you can Help Us


Next Talk

Thursday, 6th September 2018 - "The Wonderful 20th Century - How Astronomy was Transformed" to be given by Dr Allan Chapman, Oxford University

From 7.30 p.m. till 9.30 p.m. (at the latest) at Cardiff University's School of Physics and Astronomy, Queen's Buildings, The Parade, Cardiff CF24 3AA venue for talks

Next Observing Session

Friday, 7th or Saturday, 8th September 2018 - please click here

See below a map of the night sky at 9.30 p.m. on 7th/8th September. Left click on it to enlarge it and it can then be printed off, if you wish!

Next Star Party

Friday, 7th September from 7.30 - 9.30 p.m. at Dyffryn Gardens - please click here


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Come and join some of the Society's 300-plus members at one of our talks or observing events.

We promise a warm and friendly welcome for all.

Only £15.00 per annum also means you can make use of our Library.

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