Entry No. 208 — the Denver file — filed under: after-dark

Chamberlin Observatory (Denver Astronomical Society Public Nights)

Denver's historic red-sandstone Chamberlin Observatory still opens its dome on Tuesday and Thursday evenings, run by the all-volunteer Denver Astronomical Society. After a short live talk by a DAS lecturer, you climb to the eyepiece of an 1894 20-inch Alvan Clark-Saegmuller refractor and look at the Moon, planets, clusters, and nebulae. The fee is famously tiny and seats are limited, so you reserve ahead. Weather can cancel viewing, but a tour of the historic interior happens regardless.

The move: Reserve a Tuesday slot, sit through the short sky talk, then take turns peering at Saturn's rings through the antique refractor in the dark dome.

📍 Before you go Reserve ahead via the Denver Astronomical Society; small per-person/per-family fee; telescope viewing is weather-dependent.

• 📍 Observatory Park, Denver
• 💸 $
• ⚡ Low-key
• 🌗 Outdoors

Where: 2930 E Warren Ave, Denver, CO 80210

Hours: Added 2026-06-23 — confirm current hours before you go.

⚠ Seasonal or scheduled — always check before you go.

Plan a visit & invite your people →

Proof: source 1 · source 2 · source 3 · source 4

last checked: 2026-06-23