... Credit Copyright: AURA / NOAO Explanation: At the top of Kitt Peak Mountain near Tucson , Arizona lies one of the world's great collections of telescopes. ... The next major dome to the right houses a 36-inch telescope now used mostly for imaging. ... Kitt Peak National Observatory is part of the United States' National Optical Astronomical Observatories and is operated under agreement with the National Science Foundation . ... Publications with keywords: Observatory - telescope . ...