I am a member of the Northern Colorado Astronomical Society in Ft. Collins.
We have about 60 members and some of the darkest skies in the US closer
than 50 miles. Our new web site is http://ncastro.org
Also, I manage the *FRAC* astro-list of 138 near-by astronomers of every class.
If your in the area and want on the list, e-me!
And there are great groups nearby in Longmont, Cheyenne, Laramie, Boulder,
Denver, Colorado Springs, Casper & Scottsbluff. Work for dark skies !!