Stargazing Questions & Answers

When is the Double Star Observatory open for stargazing tours?

We are open for star tours throughout the year on days when the light of the Moon does not adversely affect stargazing. Visit our Events Calendar for the optimum stargazing dates. The current weather conditions, such as cloudy skies or high winds, will also affect the availability of stargazing tours. Stargazing tour times vary based on the start of darkness.

What is included in the stargazing tour?

The stargazing adventure begins just after sunset and lasts for 1½-2 hours. We start the evening with a visual tour of the night sky, using a green laser to point out planets, constellations, satellites and other interesting celestial objects. Then, we will take a closer look at various celestial objects through several large telescopes. During the tour, coffee, hot chocolate, water and cookies will be available to keep you refreshed.

What else do I need know for the stargazing tour?

• Directions to the observatory will be sent once your reservation is confirmed.
• Plan to arrive 15 minutes before your scheduled start time.
• Dress warmly – Colorado evenings can be quite cool and temperatures drop quickly after sunset.
• Wear comfortable, close-toed shoes.
• We provide special nighttime lighting, so no need for flashlights.
• Restroom facilities are available.
• Due to fire danger, smoking is not allowed on the property.

What will we see during the stargazing tour?

Depending upon the astronomical calendar, you will have a chance to view planets, galaxies, double stars, star clusters and nebulae. We match these objects to the proper telescope and magnification for optimum viewing. And with several telescopes available, you can stargaze at your own pace.

Do we see celestial objects in color?

Bright objects, such as planets, stars, bright nebulae and small planetary nebulae can be seen in color. Dim objects such as galaxies only appear in color through long-exposure photography. The retina is lined with millions of sensors called rods and cones. The rods are responsible for our ability to see shapes and the cones are responsible for color. Unfortunately for stargazing activities, cones are approximately 1,000 times less sensitive to light than the rods, which is why we only see color in bright objects.

How long does it take for my eyes to adjust to darkness?

It typically takes about 20 to 30 minutes for the eyes to fully adjust to dark conditions. This is why we start the stargazing tour with a visual tour of the night sky. Besides learning about the night sky, it gives your eyes time to adjust to darkness. While dark adaptation takes some time, the eyes will un-adapt very quickly when exposed to white light. For that reason, the Double Star Observatory utilizes low intensity red and green lighting for necessary area illumination.