From the November 2009 issue

Stephen James O’Meara’s Secret Sky: Test your vision: The perigee Moon

January 2010: Take advantage of January's lunar opportunities by locating these naked-eye features.
By | Published: November 23, 2009
Stephen James O'Meara

While looking at the Moon, have you ever wondered what the finest feature visible to the unaided eye might be? This month is a good time to find out because we have two Full Moons in a calendar month: on the evenings of December 31/January 1 and January 29/30.