Join Chesterfield Astronomical Society for an amazing stargazing experience!

Open every Friday from 8pm, our main telescope, and the smaller scopes outside provide alternative opportunities for viewing the planets, moon and stars. Find Out More

Click on this link to open Amazon in a new page. Any orders you place on Amazon will then generate a small payment to CAS to help us maintain the observatory. Thank you for your support!

Welcome to CAS




We are pleased to announce the re-opening of the Barnet Observatory on Friday 7th August 2020.

Sadly, for the time being, we can only accept members.  This is due to the Covid-19 guidelines of social distancing and the space we have available.  We hope we can start to accept visitors as well at some time in the future if things progress and no further lockdowns occur.

We are having to handle things differently at the Observatory now.  Members need to contact us if they wish to come to the Observatory as we have to control and restrict the number of people visiting at any one time. 

Please contact us on



When visiting the Observatory please observe the signs in place for entry

and exit to and from the lecture room as there is a one-way system in place.  Please make sure you don’t pass in the porch area and please stay 2 metres apart at all times if at all possible.

We encourage you to bring face coverings but if you haven’t got them face masks are provided together with gloves, hand sanitisers and wipes.  We would appreciate it if you would make use of the things provided for everyone’s safety. 

There is a full Risk Assessment available to read in the lecture room. 

Additionally, we will accept group bookings for next autumn onwards so please feel free to make bookings via our website.


Would you like to become a member?

Click here to join us!


The Chesterfield Barnett Observatory

Starazing at the Chesterfield Observatory
Our observatory is open every Friday from 8pm onwards until the last person leaves. We always give visitors a warm welcome so if you’d like to join us, please feel free to do so. You don’t need to book your visit, just pop over to see us and we’ll show you around and make sure you get the opportunity to do some stargazing too if the weather is with us. We rely on the generosity of the local community to keep the observatory open so please can you place a small donation of £2 in our visitors’ pot when you visit.

Friday night is also members’ night and whilst we are always delighted to receive visitors please be aware that sometimes our members could be busy with their hobby which can require a high level of concentration so might appreciate it if you avoid interrupting them when using or setting up a telescope. Thanks for your understanding.

If you’d like to learn more about the observatory, click here

We very much hope that you will come and visit us on a Friday evening when we will make sure you have an astronomically good time 🙂

About Hastings Close

Our observatory is located on a small residential close. As such, parking can be a problem and we ask that all visitors – including those who drop off children or adults for group visits – consider our neighbours’ needs for parking and respect the peace and privacy to which they are entitled. Please help us to ensure we maintain a good relationship with our neighbours. Thank you.


Visit the Chesterfield Observatory for an amazing astronomical experience
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Are you thinking of organising a group visit? Click here to find out more!
View our gallery for awesome photos taken by our members


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Moon Phase

Third Quarter Moon
Third Quarter Moon

The moon is currently in Taurus
The moon is 22 days old

Amazon Purchases

If you are thinking of making a purchase from Amazon, then please click the banner, The Society will, without any extra cost to you whatsoever, receive a commission on your purchase. The Society has to date raised a fantastic £626.10 as a result of purchases through our link. Thank you to everyone who supports us in this way. Your kind and continued support is really appreciated.