Galaxy Quest

By Aaron B. Clevenson, ALCor

“Don’t you see what’s at stake here? The ultimate aim of all science—to
penetrate the unknown. Do you realize we know less about the earth we
live on than about the stars and the galaxies of outer space? The greatest
mystery is right here, right under our feet.”
- Professor Oliver Lindenbrook (Journey to the Center of the Earth)

This month join us as we fulfill the Professor’s statement. Some with us to explore galaxy groups and clusters. This is the 17th article in the series about Astronomical League Clubs.

There are two flavors of this observing program: Manual or Device-Aided. You should check the AL website for precise definitions of this distinction. But basically, manual means using your eyes to locate the object and using hand-guided telescopes. Observations can be visual (with the eyes) or photographic using a camera or a CCD.

In total, you need to observe 120 galaxy groups and clusters, 30 each from four categories: Trios, Hickson Groups, Additional Galaxy Groups, and Abell Clusters. To be able to find all of these objects, you will need to purchase the $16.00 manual from the Astronomical League: Observe Galaxy Groups and Clusters. They have a list of 250 objects to choose from. They advise at least an 8-inch telescope if you are using a CCD, or a 12.5-inch telescope for visual observations, so these are fairly faint objects and a rather advanced observing challenge. Sounds perfect for those of you with CCDs and a relatively large telescope. Go for it!

Next month we come back a little closer to home with a look at the most mysterious members of the space family, the comets. Join us!