We did the nightly observation tour and it was gre...

We did the nightly observation tour and it was great. The employees/tour guides were very knowledgeable and patient. You get to identify constellations with a star chart and look through a large telescope at different objects in the night sky. On our night we got to see some different types of star clusters, Mars, and the moon. Each night is different based on what is in the night sky at the time. I would definitely do this again. Make sure you bundle up, you are outside most of the time and it does get pretty chilly after dark.