We had about 230 trick-or-treaters at Hocus Focus 2025! Thank you so much to all who attended. Hocus Focus will return in 2026. Stay tuned for future announcements!
Kopernik Observatory transforms to offer spooky spectacles and extraterrestrial treats. We invite you to don your costume and trick-or-treat through our decorated classrooms and observatory. Visit each of our ghoulish educators to participate in chilling science experiments and thrilling demonstrations. Peer into the eerie mysteries of the cosmos in our Spooky Universe planetarium show. If favorable weather prevails, look through our telescopes to see alien worlds and possibly a comet from the far reaches of our Solar System!
Ticket Prices
Adult: $8.00
Senior (65+): $6.00
Child (4-17): $6.00
Child (Ages 3 and under): Free
Event Details
Appropriate for ages 4-12
Preregistration Required
1 Session is 75-minutes long
Costume Policy: family-friendly
Available Sessions (2025)
This is a family-friendly Halloween event. The activities are best suited for children ages 4–12, but all are welcome. Preregistration is required and walk-in registrations will not be available. When purchasing tickets, you can choose between four, 75-min sessions (those with strikethroughs are sold out):
October 24 | 6:00 PM – 7:15 PM
October 24 | 7:30 PM – 8:45 PM
October 25 | 6:00 PM – 7:15 PM
October 25 | 7:30 PM – 8:45 PM
Please arrive 10-minutes before the start of your session and have your e-tickets ready.
KOSC Hocus Focus Refund Policy: Full refunds are available for cancellation requests submitted more than 7 days prior to the start of the registered session. Refunds are not available when cancelling less than 7 days prior to the event.
Please note that member discounts do not apply to this fundraising event.