We have limited opportunities available due to space restrictions and volunteer availability. Astronomy Nights are extremely popular, and we are currently sold out into 2026.

Also, we have a new system in place which will allow for more opportunities for the public to gain access to the limited reservations:

We are no longer allowing space to be reserved months and years into the future. Moving forward, we will only release 70% (14 of 20) of the bookable slots 60 days ahead of any given Astronomy Night. At the beginning of the month of the event, we will release the remaining 6 slots. You will not be able to view or reserve any Astronomy Nights beyond 60 days from today.

Additionally, we have created a new Saturday Team of volunteers. We block out Saturday evenings for special private group events and DAS member events. At the beginning of each month, any Saturday nights that have still not been reserved will be opened up for additional Astronomy Nights, and 20 tickets for each available Saturday time slot will be released at the beginning of the month.

Finally, any last-minute cancellations opening up new ticket availabilities will be announced on our Facebook, Twitter, and Bluesky accounts.

At this time, we do not offer a waiting list. It is difficult to maintain with volunteers and would be hundreds of guests long.

You can always watch the reservations page for any last-minute openings. You will be able to see all dates coming up in the next 60 days. Astronomy Night dates will only be on Tuesdays, Thursdays and Saturdays. Gray boxes are already sold out, and green boxes indicate at least one ticket is available.

We also host a FREE mini-star party at sundown on the south lawn of the University of Denver’s Historic Chamberlin Observatory every month. Weather permitting, look through the observatory’s 20-inch Alvan Clark-Saegmuller refractor telescope and meet fellow amateur stargazers with telescopes on the lawn out front. Ask the experts there about their equipment, or bring your own if you have questions about how it works and what to look at.

You can check our Events Calendar for the next Saturday Open House this month.

Anywhere far away from city lights is best. Earth and Sky maintains a list of crowdsourced locations recommended for sky viewing.