This document contains the conditions under which a member can lease one of the obervatory buildings at the River Ridge Observatory. Lease Agreement

Even the most casual observer knows that the Sun and stars move across the sky. These objects appear to move because the Earth rotates on its axis every day. In order for you to observe an object for any length of time, your telescope must track the sky in one way or another. Polar Alignment

This is a binocular guide to the Moon, developed by CAAS, to assist in the identification of features on our only natural satellite.
Lunar Alphabet