The Society's change to a Charitable Incorporated Organisation

What does it all mean?


What's up in March 2017

Upcoming CAS Event

Tie-in with BBC Stargazing Live

You do not need to join to attend

Timed to follow the BBC's Stargazing Live Series, Cardiff Astronomical Society will be opening their observatory on Friday March 31st 19:30 till 21:30 at the National Trust Dyffryn Gardens, St Nicholas, Cardiff CF5 6SU
This is a FREE public event but admission will be by ticket only, booking essential.
Telephone Dyffryn Gardens on 02920 590813 to book your place.
Members from the Cardiff Astronomical Society will be on hand to present a tour of the night sky and there will also be manned telescopes as well as plenty of stargazing information and advice from experienced astronomers.

Actual observing is weather dependent but if it isn't possible the observatory will still be open for you to look around and there will be plenty of stargazing advice. Hot food and drinks will be available for purchase.

If you are coming along, dress warmly and bring red light torches if possible. Or keep white light torches pointed downwards, alternatively cover them with red film.


Cardiff Astronomical Society

Cardiff Astronomical Society CAS was founded in July 1975 by Dr. Bob Owens and Dave Powell at an 'out of London' meeting of the British Astronomical Association held at Dyffryn Gardens. The Society continues to develop its activities, ably supported by a very active and enthusiastic committee. Membership has increased steadily over the years to more than 300+ which certainly makes CAS one of the largest formally constituted amateur astronomical societies in the UK.

A series of talks is held on alternate Thursday evenings from September to July at Cardiff University Physics and Astronomy Department, members attending meetings usually number over 60 and on several occasions during the year over 100. The programme is varied and comprises of lectures, short talks and debates. The aim is to cater for all interests, at whatever level, beginner or advanced. The Society is able to attract the very best speakers from all over the UK and beyond.

In addition, we hold regular observing sessions at our own observatory at Dyffryn Gardens. Members are able to look up at the sky with the help of more experienced observers and use some of the telescopes owned by the Society. For those who need help there is usually a naked eye sky tour to start the night off.

A comprehensive Library is available for use by all members.

The Cardiff Astronomical Society is a thriving society located in South East Wales. Come and join some of the Society's 300+ members at one of our meetings or observing sessions. Cardiff Astronomical Society promises a warm and friendly welcome for all!!

Join now!

0nly £15.00 per annum means you can make use of our Library.

Select here for FREE downloadable stargazing resources



Up and coming events with CAS

May 6th 2017 Cardiff Astronomy Festival.
10 am till 4pm National Museum of Wales, Cathays Park, Cardiff. A showcase of all things astronomical! Lunar samples on display, various trade stands, shows in the Techniquest Planetarium, meteorites for sale, help and advice from members of Cardiff Astronomical Society. FREE

July 30th 2017 10 am till 4pm.
Solar Viewing, Mountain Visitor Centre, Libanus, Brecon Beacons National Park
No fee or booking necessary, just turn up at the Centre during the day N.B. car parking charges will apply, solar viewing will depend on the Sun making an appearance!

October 14th 2017 Stargazing Evening 6:30pm till 9:30pm,
Mountain Visitor Centre, Libanus, Brecon Beacons National Park. A ticketed event, charges will apply, bookings via the National Park, details to follow.

CAS Stargazing Evening

October 28th 2017


Introduction in Astronomy 1

Introduction in Astronomy 2

Introduction in Astronomy 3

Introduction in Astronomy 4


Cardiff Astronomical Society became a Charitable Incorporated Organisation


31st October 2016

In Association with