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

***Important News***

The society’s AGM will be held at the observatory on Friday the 3rd May at 8pm. Members of the public who are considering visiting the observatory on this date are respectfully asked to defer their visit to another evening. This is because members who would normally welcome you and show you around will be attending the meeting.

Thank you for your cooperation.

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
Discover where the ISS is and when it will next be visible from where you are
Are you thinking of organising a group visit? Click here to find out more!
View our gallery for awesome photos taken by our members


  • Talks

    We’ve added a new menu item from the ‘About Us’ menu that takes you to a schedule of talks. Click on the date of a talk to see details. Cheers, Mark.

  • User IDs for this Site

    10th March 2018 At the last committee meeting a decision was made that all non-essential user IDs on this website would be disabled. The government has brought in new rules regarding the visibility, use and management of personal data and […]

Moon Phase

Waning Gibbous Moon
Waning Gibbous Moon

The moon is currently in Scorpio
The moon is 18 days old

Upcoming Events

6:30 pm Observatory Visit @ Observatory
Observatory Visit @ Observatory
Mar 27 @ 6:30 pm – 8:30 pm
280th Cubs Sheffield 24 cubs + 9 leaders 6:30-8:30 ME giving talk
8:00 pm Observatory Open – Click for Info
Observatory Open – Click for Info
Mar 29 @ 8:00 pm – 11:30 pm
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[...]
8:15 pm Extra Solar Planets @ Observatory
Extra Solar Planets @ Observatory
Mar 29 @ 8:15 pm – 9:15 pm
Extra Solar Planets A talk by Dr SusanCartwright

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.