On 19 and 20 May 2023 the Doors Open Days took place at the ASU Observatory in Ondřejov. Employees of the Stellar Department also participated in the preparation of the programme.
![](https://stel.asu.cas.cz/en/wp-content/uploads/2023/11/IMG_20230520_173553-n-dod2023.jpg)
On 19 and 20 May 2023 the Doors Open Days took place at the ASU Observatory in Ondřejov. Employees of the Stellar Department also participated in the preparation of the programme.